| Entries |
| Document | Title | Date |
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| 20080264637 | Surface Mixing of Encapsulated Plug Components for Well Remediationg - A two part encapsulated cementing system is surface mixed and then placed downhole in a method of remediating an active well. This mixture is then placed downhole where it is allowed to degrade in the well fluid allowing for the formation of a cement plug. | 10-30-2008 |
| 20080289826 | Downhole Slurry Method For Primary Cementing A Well - A method of primary cementing well is provided utilizing a cement and cement activator cementing composition, in which one of the components is first placed in the annulus of the well. Next, the other component is placed in the annulus above the first placed component. Densities of the components have been selected such that the density of the second placed component is sufficiently higher then the density of the first placed component to facilitate gravity mixing of the two components as the second placed component moves through the first placed component and in the process activation occurs. | 11-27-2008 |
| 20090038801 | Sealant Compositions and Methods of Use - Of the many methods and compositions provided herein, one method includes a method comprising introducing a sealant composition into a well bore that penetrates a subterranean formation, wherein the sealant composition comprises a base fluid, a binder material, and a filler material; and allowing the sealant composition to form a cohesive sealant. One composition provided herein includes a sealant composition comprising a base fluid, a binder material, and a filler material, wherein the sealant composition will form a cohesive sealant. | 02-12-2009 |
| 20090071649 | WELLBORE FLUIDS FOR CEMENT DISPLACEMENT OPERATIONS - A method of cementing a pipe into a wellbore filled with a drilling fluid that includes displacing the drilling fluid with the displacement fluid which includes a base fluid, a micronized weighting agent; suspending a pipe in the wellbore; and pumping cement into the wellbore to substantially fill the annulus formed between the outer surface of the pipe and the wellbore is disclosed. | 03-19-2009 |
| 20090071650 | FOAMED CEMENT COMPOSITIONS COMPRISING OIL-SWELLABLE PARTICLES AND METHODS OF USE - Of the many compositions and methods provided herein, an embodiment of a method comprises introducing a foamed cement composition into a subterranean formation, wherein the foamed cement composition comprises: a cementitious component; a foaming and stabilizing surfactant; an oil-swellable particle; gas; and water; and allowing the settable composition to set in the subterranean formation. Another embodiment of a method comprises introducing a foamed cement composition into an annulus between a pipe string and a subterranean formation, wherein the foamed cement composition comprises comprising: a cementitious component; a foaming and stabilizing surfactant; an oil-swellable particle; gas; and water; and allowing the settable composition to set in the annulus. An embodiment of a foamed cement composition comprises a cementitious component, a foaming and stabilizing surfactant, a swellable particle, gas, and water. | 03-19-2009 |
| 20090095475 | Cement Compositions Comprising a High-Density Particulate Elastomer and Associated Methods - A variety of methods and compositions are disclosed, including, in one embodiment, a method of treating a subterranean formation comprising introducing a treatment fluid into a well bore, wherein the treatment fluid comprises a particulate elastomer having a specific gravity of at least about 1.6. Another method of treating a subterranean formation comprises introducing a treatment fluid into a well bore, wherein the treatment fluid comprises a particulate elastomer having a specific gravity of at least about 1.05, wherein the particulate elastomer comprises a halogenated thermoplastic. Treatment fluids, methods of cementing, and cement compositions are also provided herein. | 04-16-2009 |
| 20090107676 | Methods of Cementing in Subterranean Formations - Methods of cementing are provided including a method comprising: a method of cementing in a well bore comprising providing a storable cement composition; placing the storable cement composition in an annulus in a reverse-circulation direction using cementing equipment supported by a trailer, wherein the annulus is formed by an outer surface of a casing in the well bore and an inner wall of the well bore; and allowing the storable cement composition to set in the annulus. In some embodiments, the storable cement composition may comprise a hydraulic cement, an aqueous fluid, and a set retarder. In some embodiments, a storable cement composition may be transported to the well bore using a trailer connected to a towing vehicle. Additional methods are also provided. | 04-30-2009 |
| 20090107677 | Sealant Composition - A sealant composition for use in subterranean wells comprising an alkali metal silicate and a calcium containing inorganic compound wherein the particles of the calcium containing compound have a mean particle size that is submicron. | 04-30-2009 |
| 20090188670 | Additives for High Alumina Cements and Associated Methods - The present invention includes methods and compositions that include a composition comprising a high alumina cement; a salt comprising at least one salt selected from the group consisting of an acidic salt, a neutral salt, and a low basicity salt; and a swellable clay; and methods of using that composition in subterranean formations. | 07-30-2009 |
| 20090200029 | Settable Compositions Comprising a Natural Pozzolan and Associated Methods - An embodiment of a method of cementing comprises: introducing a cement composition into a subterranean formation, wherein the cement composition comprises cement kiln dust, a natural pozzolan, and water; and allowing the cement composition to set. Another embodiment of a method comprises: introducing a cement composition into a subterranean formation, wherein the cement composition comprises a cement, a natural pozzolan, and water, wherein the cement comprises Portland cement interground with burned shale; and allowing the cement composition to set. Another embodiment includes a cement composition comprising at least one additive selected from the group consisting of cement, cement kiln dust, Portland cement interground with burned shale, and a combination thereof; a natural pozzolan; and water. | 08-13-2009 |
| 20090205829 | Polymeric Microspheres as Degradable Fluid Loss Additives in Oilfield Applications - A method of plugging a fracture in a subterranean formation which includes placing into the fracture a composition comprising microspheres or microbeads, wherein the microspheres are created by surface crosslinking of droplets in a water-in-water emulsion. Such microspheres may form a filter cake in the formation. The microspheres may include a chemical agent to be released when the microspheres dissolve. | 08-20-2009 |
| 20090236097 | Cement Compositions Comprising Latex and a Nano-Particle and Associated Methods - Methods and compositions are provided that may comprise cement, a nano-particle, latex, and water. An embodiment of the present invention includes a method of cementing in a subterranean formation. The method may include introducing a cement composition into the subterranean formation, wherein the cement composition comprises cement, a nano-particle, latex, and water. The method further may include allowing the cement composition to set in the subterranean formation. Another embodiment of the present invention include a cement composition. The cement composition may comprise cement, a nano-particle, latex, and water. | 09-24-2009 |
| 20090266543 | Gelation Inhibiting Retarders for Highly Reactive Calcium Silicate Based Binder Compositions and Methods of Making and Using Same - A method of servicing a wellbore comprising placing in the wellbore a composition comprising a non-API compliant reactive calcium silicate based hydraulic binder and at least one gelation inhibiting retarder, and allowing the composition to set. A method of servicing a wellbore comprising placing in a wellbore a cement composition comprising an industrial waste product selected from the group consisting of Class C Fly ash, cement kiln dust, and combinations thereof and a gelation inhibitor, and allowing the composition to set. A method of controlling the thickening time of a cementitious composition comprising contacting a material having greater than 15 wt. % of tricalcium aluminate and tetracalcium aluminoferrite with a gelation inhibitor comprising a alkylbenzene sulfonic acid, at least one methallyl sulfonic acid monomer; at least one copolymerizable nonionic monomer, and at least one copolymerizable olefinically unsaturated carboxylic acid monomer. | 10-29-2009 |
| 20090277636 | SYSTEM AND METHOD FOR PERFORATED WELL SAND CONTROL - In one embodiment, a system includes a cased wellbore disposed in a formation of interest. The system includes an emulsion positioned in the wellbore at a depth of the formation of interest. The emulsion includes an oil external phase and an aqueous internal phase. The oil external phase includes particles having calcium hydroxide. The aqueous internal phase includes insoluble silica particles. The system further includes a perforating tool that generates perforation tunnels through the cased wellbore into the formation of interest. The system further includes a well flow control device that shuts in the wellbore for a specified period of time. The emulsion breaks during contact with the formation in the perforation tunnels, and the calcium hydroxide and silica particles form a cementitious material that consolidates the perforation tunnels. | 11-12-2009 |
| 20090283269 | Extended cement compositions comprising oil-swellable particles and associated methods - A variety of methods and compositions are disclosed herein, including, in one embodiment, a method of cementing in a subterranean formation comprising: providing an extended cement composition comprising cement, water, an oil-swellable particle, and a set retarding additive, wherein the extended cement composition is capable of remaining in a pumpable fluid state for at least about 1 day; adding a cement set accelerator to the extended cement composition; introducing the extended cement composition into a well bore; and allowing the extended cement composition to set. Another embodiment comprises an extended cement composition comprising: cement; water; an oil-swellable particle; and a set retarding additive, wherein the extended cement composition is capable of remaining in a pumpable fluid state for at least about 1 day. | 11-19-2009 |
| 20090288830 | HOMOGENOUS SYNTHETIC MUD-TO-CEMENT CEMENTING GLASSES - A synthetic glass family in the quaternary phase field of CaO—SiO2-Al2O3-MgO (CSAM) with hydraulic and pozzolanic properties for use in differing applications in the gas and oil well cementing area. A method of making a mud-to-cement (MTC) slurry and a method for treating oil and gas wells with the MTC slurry containing a homogenous amorphous synthetic glass made from a mixture of inorganic materials selected from the group consisting of CSAM, wherein the cementing glasses with the mixture of inorganic materials are in a 100% amorphous phase with a degree of crystallization of zero. | 11-26-2009 |
| 20090308611 | Wellbore Servicing Compositions Comprising a Density Segregation Inhibiting Composite and Methods of Making and Using Same - A method of servicing a wellbore comprising placing a wellbore servicing fluid comprising a density segregation inhibitor composite into the wellbore, wherein the density segregation inhibitor composite comprises a high density additive and a low density additive; and wherein the high density additive comprises barium sulfate, iron oxide, manganese oxide, or combinations thereof. A method of inhibiting segregation of particles in a wellbore servicing fluid comprising preparing a composite material comprising a high density additive and a low density additive, wherein the low density additive comprises an elastomer which can increase in volume by greater than about 300% based on its original volume when contacted with a fluid. | 12-17-2009 |
| 20090308612 | Method for wellbore servicing to enhance the mechanical strength of cement using electrochemically activated water - A wellbore servicing method comprising converting a water into an electrochemically activated water, preparing a wellbore servicing composition comprising the electrochemically activated water, and placing the wellbore servicing composition in a wellbore. Also disclosed is a cement composition comprising a cement and an electrochemically activated water. | 12-17-2009 |
| 20090321074 | MECHANICALLY MODIFIED FILTER CAKE - A down hole tool including a compression surface, a compression surface axis, and at least one support member configured to attach the compression surface to a well drilling tool assembly, wherein the extendable support member is extendable by an extension force provided to the support member. The down hole tool is rotable relative to an axis of the well drilling tool assembly, and as the well drilling tool assembly rotates, the at least one compression device exerts a lateral force along a sidewall of a wellbore. Also, a method of forming filter cake comprising releasing a drilling fluid and contacting the drilling fluid with a mechanical pressure on the sidewall of the wellbore and the drilling fluid. | 12-31-2009 |
| 20100025039 | Cement Compositions and Methods Utilizing Nano-Clay - The present invention includes well treatment fluids and methods utilizing nano-particles. An embodiment of a method of the present invention may comprise introducing a treatment fluid comprising nano-clay into a subterranean formation. The treatment fluid may be selected from the group consisting of a cement composition, a drilling fluid, a spacer fluid, and a lost circulation control composition. Another embodiment of the present invention may comprise a method of cementing. The method of cementing may comprise introducing a cement composition comprising a hydraulic cement, nano-clay, and water into a subterranean formation. The method further may comprise allowing the cement composition to set in the subterranean formation. Yet another embodiment of the present invention may comprise a treatment fluid, the treatment fluid comprising nano-clay. The treatment fluid may be selected from the group consisting of a cement composition, a drilling fluid, a spacer fluid, and a lost circulation control composition. | 02-04-2010 |
| 20100038084 | Cement Compositions Comprising Aluminum Chloride and Associated Methods - A variety of methods and compositions are disclosed, including, in one embodiment, a method of cementing in a subterranean formation comprising introducing a cement composition into the subterranean formation, wherein the cement composition comprises cement; a strength-enhancing additive consisting essentially of aluminum chloride and a metal halide; and water; and allowing the cement composition to set. Another method of cementing in a subterranean formation comprises preparing a cement composition that comprises cement, a strength-enhancing additive consisting essentially of aluminum chloride and a metal halide, and water, wherein the aluminum chloride and the salt are not combined prior to preparing the cement composition; introducing the cement composition into the subterranean formation; and allowing the cement composition to set. | 02-18-2010 |
| 20100051277 | Reverse-Circulation Cementing of Surface Casing - An apparatus for reverse circulation cementing of surface casing in subterranean formations and associated methods are provided. One example of a method may involve a method of reverse circulation cementing a surface casing in a well bore with a conductor casing positioned therein comprising: providing a tool comprising at least one isolation device coupled to the surface casing; positioning the isolation device in the well bore to isolate an annulus between the surface casing and the conductor casing; flowing cement through a port in the conductor casing in a reverse circulation direction; and allowing the cement to set therein. | 03-04-2010 |
| 20100065273 | METHODS AND MATERIALS FOR ZONAL ISOLATION - The invention relates to the use of one or more water-soluble reactive liquid component capable of subsequent polymerization or cross-linking to form a solid to improve the zonal isolation and alleviate the impacts of cracks and fissures in the cement sheath around a completed subterranean well. It includes the steps of injecting a wellbore fluid carrying the reactive component or additive into the wellbore, injecting a cementitious composition as slurry into the wellbore and letting said reactive liquid component pass through at least one of the interfaces between cement and formation, cement and filter cake, and filter cake and formation before forming a solid of said reactive liquid component that traverses said at least one of the interfaces. | 03-18-2010 |
| 20100089582 | Sorel cement compositions, amine phosphono retarders, and associated methods - A variety of methods and compositions are disclosed, including, in one embodiment, a method of cementing comprising introducing a cement composition into a subterranean formation, wherein the cement composition comprises a Sorel cement and an amine phosphono retarder; and allowing the cement composition to set. | 04-15-2010 |
| 20100096135 | Well Treatment Compositions and Methods Utilizing Nano-Particles - Disclosed embodiments relate to well treatment fluids and methods that utilize nano-particles. Exemplary nano-particles are selected from the group consisting of particulate nano-silica, nano-alumina, nano-zinc oxide, nano-boron, nano-iron oxide, and combinations thereof. Embodiments also relate to methods of cementing that include the use of nano-particles. An exemplary method of cementing comprises introducing a cement composition into a subterranean formation, wherein the cement composition comprises cement, water and a particulate nano-silica. Embodiments also relate to use of nano-particles in drilling fluids, completion fluids, stimulation fluids, and well clean-up fluids. | 04-22-2010 |
| 20100116497 | Method of servicing a wellbore with a sealant composition comprising solid latex - A method of servicing a wellbore comprising placing a sealant composition comprising solid latex into the wellbore. | 05-13-2010 |
| 20100139920 | DRY CEMENT FORMULATION FOR CEMENTING HOLES IN THE EARTH - The present invention pertains to a dry cement formulation for cementing earth boreholes, in particular oil, gas and/or terrestrial heat boreholes, containing a) about 20 to 99.9 wt. % cement, b) about 0 to 65 wt. % powdered quartz/or quartz dust, c) about 0.1 to 30 wt. % water-redispersible dispersion powder, and d) about 0 to 20 wt. % further additives. Furthermore, the invention pertains to the use of the dry cement formulation for preparing a cement slurry as well as to the use of water-redispersible dispersion powders in a cement slurry for cementing earth boreholes, wherein the cement slurries can be used for reducing the water loss of the cement slurry, for reducing the gas and/or water penetration and/or for sealing off the gas and/or water channels by means of the cement slurry which has been introduced into the borehole and has set. | 06-10-2010 |
| 20100155068 | Cement retarder systems, and retarded cement compositions - A cement retarder system for use in underground wells included a borate compound, an organophosphonate salt, and a copolymer formed from AMPS and a monomer selected from the group consisting of acrylic acid, acrylamide and mixtures thereof. A method of using the retarder system in an underground well having a borehole drilled therein with a borehole wall, and further including a casing disposed in said borehole, such that an annulus exists between said casing and said borehole wall, comprising the steps of providing a cement composition and a liquid carrier, providing a retarder system for said cement composition comprising a borate compound, an organophosphonate salt, and a copolymer formed from AMPS and a monomer selected from the group consisting of acrylic acid, acrylamide, and mixtures thereof, mixing a sufficient amount of said retarder system to create a desired induction period with said cement composition and said liquid carrier to form a cement slurry, pumping the cement slurry from the surface down the casing, and causing said slurry to return to the surface in the annulus between the casing and the borehole wall. | 06-24-2010 |
| 20100163237 | DEGRADABLE CEMENT COMPOSITIONS CONTAINING DEGRADING MATERIALS AND METHODS OF CEMENTING IN WELLBORES - A temporary matrix is provided in treating a subterranean formation by providing a composition comprising a matrix forming material and a matrix degrading material. The matrix degrading material is capable of degrading the matrix after a period of time when subjected to existing or induced conditions of the subterranean formation. The composition is placed into a wellbore penetrating the subterranean formation. The composition is allowed to form a matrix within the wellbore, whereby the matrix at least one of significantly reduces the passage of fluid across or near the matrix or provides structural strength. A treatment operation is performed on the subterranean formation or wellbore and the degrading material is allowed to degrade the matrix. | 07-01-2010 |
| 20100186956 | Methods for Servicing Well Bores with Hardenable Resin Compositions - Methods for servicing well bores with hardenable resin compositions are provided. In one embodiment, a method of servicing a well bore includes providing a hydrophobic well bore servicing composition comprising a liquid hardenable resin, a hardening agent, and a weighting material selected to impart a desired first density to the well bore servicing composition; introducing the well bore servicing composition into a well bore comprising a well bore fluid having a second density; allowing the well bore servicing composition to migrate through the well bore fluid to a desired location in the well bore based at least in part upon a difference between the first and second densities; and allowing the liquid hardenable resin to at least partially harden to form a well bore plug at the desired location in the well bore. | 07-29-2010 |
| 20100258312 | Methods of Plugging and Abandoning a Well Using Compositions Comprising Cement Kiln Dust and Pumicite - The present invention is directed to plug-and-abandon operations that use plugging compositions comprising cement kiln dust, pumicite, and/or lime. An embodiment includes a method of plugging a well bore for abandonment comprising: placing a plugging composition in the well bore, the plugging composition comprising: cement kiln dust in an amount of about 5% to about 100% by weight of cementitious components, pumicite in an amount of about 5% to about 100% by weight of cementitious components, 0% to about 24% of Portland cement by weight of cementitious components, and water; and allowing the plugging composition to set and form a plug. | 10-14-2010 |
| 20100282465 | Methods of consolidating particulates using a hardenable resin and an orgaosilane coupling agent - Improved methods for consolidating particulates in subterranean formations wherein the particulates are consolidated using curable resins that require the use of a hardening agent in order to cure. The improved methods use an organosilane coupling agent to increase adhesion of the curable resin to inorganic surfaces, such as proppant particulates or rock surfaces, and to act as a resin hardening agent. | 11-11-2010 |
| 20100282466 | Acid-Soluble Cement Compositions Comprising Cement Kiln Dust and/or a Natural Pozzolan and Methods of Use - The present invention relates to acid-soluble cement compositions that comprise cement kiln dust (“CKD”) and/or a natural pozzolan and associated methods of use. An embodiment includes a method of cementing comprising: placing an acid-soluble cement composition in a subterranean formation, wherein the acid-soluble cement composition comprises a hydraulic cement, a component selected from the group consisting of CKD, pumicite, and a combination thereof, and water; allowing the acid-soluble cement composition to set; and contacting the set acid-soluble cement composition with an acid to dissolve the set acid-soluble cement composition. | 11-11-2010 |
| 20100314111 | Cement Compositions Comprising Particulate Foamed Elastomers and Associated Methods - Methods of subterranean cementing involving cement compositions comprising particulate foamed elastomers and associated methods are provided. In one embodiment, the methods comprise introducing a cement composition into a subterranean location, wherein the cement composition comprises a hydraulic cement, a particulate foamed elastomer, and an aqueous fluid; and allowing the cement composition to set in the subterranean location. In one embodiment, the particulate foamed elastomer may comprise polyurethane foam. | 12-16-2010 |
| 20100314112 | Method of treating oil and gas wells - A two step process for treating an oil or gas well. The first step uses a cross linking agent, such as borax, as a preliminary wash for the well following drilling. The cross linking agent cleans the well of excess mud and pre-coats the tubing and the formation surfaces with the cross linking agent. The second step introduces a cement-polymer mixture into the well. A polymer, such as for example polyvinyl alcohol, that undergoes cross linking when exposed to the cross linking agent is employed. When the polymer comes into contact with the cross linking agent in the well, cross linking of the polymer occurs. This cross linking helps to prevent fluid loss into the formation. Also, because the cross linking agent wash previously cleaned the surfaces of the tubing and the formation, better bonding between the cement and the surfaces of the tubing and the formation occurs. | 12-16-2010 |
| 20100319919 | APPLICATION OF DEGRADABLE FIBERS IN INVERT EMULSION FLUIDS FOR KILL PILLS - A method of treating a subterranean formation includes pumping into a cased, perforated wellbore that intersects the formation an invert emulsion kill fluid, the invert emulsion kill fluid comprising: an oleaginous continuous phase; a non-oleaginous discontinuous phase; an emulsifier; at least one degradable material; and at least one bridging material; contacting the formation with the kill fluid; and allowing the degradable material to at least partially degrade. | 12-23-2010 |
| 20110048715 | Radiation-Induced Thickening for Set-On-Command Sealant Compositions and Methods of Use - The present invention includes methods relating to the setting of fluids or slurries in a wellbore. In one embodiment, a method of isolating a portion a wellbore by preparing a sealant composition comprising a fluid component and a polymeric additive component, placing the sealant composition into a wellbore and subjecting the sealant composition to ionizing radiation. The ionizing radiation can cause bonding between polymeric additive components and create a polymer matrix within the sealant composition that increases the mechanical strength of the sealant composition. | 03-03-2011 |
| 20110067867 | Wellbore Servicing Fluid Compositions and Use Thereof - A method of servicing a wellbore in contact with a subterranean formation comprising placing a wellbore servicing fluid comprising a polyuronide polymer within the wellbore, contacting the wellbore servicing fluid with a divalent ion source, and allowing the wellbore servicing fluid to form a gel within the wellbore wherein the divalent ion source is located within the wellbore. A method of servicing a wellbore in contact with a subterranean formation comprising (a) placing a wellbore servicing fluid comprising a polyuronide polymer into the wellbore wherein the wellbore servicing fluid contacts a calcium ion source, (b) shutting the wellbore and allowing the servicing fluid to set into place for a period of time, and (c) repeating steps (a) and (b) until the permeability of a structure within the wellbore is reduced by about 50%. | 03-24-2011 |
| 20110067868 | SELF ADAPTIVE CEMENT SYSTEMS - A self-healing cement system includes cement, water and at least one additive that swells in contact with water from reservoir or from formation in the case of a structural failure in the set cement to provide a physical barrier in the zone of failure. Examples of such material include particles of super-absorbent polymer. These additives have the effect of making the cement self-healing in the event of physical failure or damage such as micro-annuli. The self healing property is produced by the contact of the water itself, the potential repair mechanism is thus activated if and when needed in case of start of loss of zonal isolation. Several super-absorbent polymers have been identified such as polyacrylamide, modified crosslinked poly(meth)acrylate and non-soluble acrylic polymers. | 03-24-2011 |
| 20110067869 | IN SITU DECOMPOSITION OF CARBONYLS AT HIGH TEMPERATURE FOR FIXING INCOMPLETE AND FAILED WELL SEALS - Methods and systems relating to in situ decomposition of carbonyls at high temperature for fixing incomplete and failed well seals, are described. According to one embodiment, a method, comprises injecting a sealing agent into a subterranean well having sealing channels or voids in well casings. An alkaline-earth carbonate precipitate is formed from the decomposition of a carbonyl compound. The sealing agent includes the carbonyl compound and an alkaline-earth halide salt. | 03-24-2011 |
| 20110088901 | Method for Plugging Wells - A method of plugging wells wherein cementitious materials (like Portland cement) are formed into pellets that can be dumped or dropped into a well that is filled with an aqueous solution. The pellets will fall quickly to the bottom of the well or mechanically placed barrier, and over time, the pellets will loose their structure and release dry cementitious material into aqueous well fluid. The cementitious material will wet in the aqueous well fluid and then set to form an impermeable plug in the well. | 04-21-2011 |
| 20110100625 | METHOD FOR FORMING AN ISOLATING PLUG - The invention relates to methods for isolating near-wellbore zones and fractures and can be used for plugging fractures in the near-wellbore zone during the removal of the fracturing fluid, as well as for plugging different kinds of fractures and branches in the casing. The method for forming an isolating-plug includes the injection of a slurry containing dispersed fibers into a well and subsequent formation of a plug to isolate the relevant section of the well and to prevent the fluid penetration. The slurry is admixed with amphiphilic substances, and the fibers used are capable of adsorbing the amphiphilic substances on their surface. | 05-05-2011 |
| 20110100626 | Settable Compositions Comprising Unexpanded Perlite and Methods of Cementing in Subterranean Formations - An embodiment of the present invention comprises a method of cementing comprising: placing a settable composition into a well bore, the settable composition comprising unexpanded perlite, cement kiln dust, and water; and allowing the settable composition to set. Another embodiment of the present invention comprises a method of cementing comprising: placing a settable composition into a well bore, the settable composition comprising ground unexpanded perlite, Portland cement interground with pumicite, and water; and allowing the settable composition to set. Yet another embodiment of the present invention comprises a settable composition comprising: ground unexpanded perlite; cement kiln dust; and water. | 05-05-2011 |
| 20110108274 | ADDITIVE FOR WELL CEMENTING APPLICATIONS - An additive for Portland-cement slurries comprises a liquid silicate absorbed into a solid porous medium. The additive is incorporated in slurries designed for well-cementing applications. The liquid silicate functions as a retarder aid and dispersant when added to slurries for use at temperatures above about 85° C. The resulting solid product allows use of the liquid silicate in well-cementing operations as if it were a dry additive. | 05-12-2011 |
| 20110120716 | Compositions and Methods for Mitigation of Annular Pressure Buildup in Subterranean Wells - Compositions and methods that mitigate pressure buildup in the annular space between two tubular bodies in subterranean wells. The composition of the invention comprises an aqueous solution of crosslinkable acrylamide-base polymer, a crosslinker and a gas. Once foamed and placed in the annular space, the composition provides a resilient, flexible, compressible and durable body that is able to compensate for pressure increases in the annular space, thereby protecting the integrity of the tubular bodies. | 05-26-2011 |
| 20110127034 | PREPARATION OF SETTING SLURRIES - When preparing a settable slurry such as a cement slurry for cementing an oil well, cement or other solid powder is mixed with water and a set retarder. In order to be able to run a convenient and rapid check on the concentration of retarder after dilution at the site of use, a tracer material is mixed with the retarder in known amount during manufacture. The tracer is chosen to enable its concentration to be determined analytically after dilution at the site of use, thereby providing a way to determine the concentration of set retarder after such dilution. The tracer may be a redox-active material and its concentration may be determined by voltammetry. Tracer may likewise be mixed with additives other than set retarder. | 06-02-2011 |
| 20110132605 | Biodegradable Set Retarder For A Cement Composition - Compositions and methods are directed to a cement composition for use in a subterranean formation. In an embodiment the cement composition comprises: (A) cement; (B) water; and (C) a polymer, wherein the polymer: (i) consists essentially of a monomer or monomers selected from the group consisting of acrylic acid, esters of acrylic acid, maleic acid, methacrylic acid, esters of methacrylic acid, itaconic acid, fumeric acid, citraconic acid, mesoconic acid, and any alkali metal, alkaline earth metal, or ammonium salt of any of the foregoing, and any combination of any of the foregoing; (ii) has the following characteristics: (a) is water soluble; and (b) is biodegradable; and (iii) is capable of providing: (a) a thickening time of at least 2 hours for a test composition maintained under a temperature condition of 190° F. and a pressure of 5,160 psi; and (b) an initial setting time of less than 24 hours for the test composition maintained under a temperature condition of 217° F. and a pressure of 3,000 psi, wherein the test composition consists of 860 grams of Class-H Portland cement, 325 grams of deionized water, and 0.4% by weight of the cement of the polymer. In another embodiment the method comprises the steps of: (A) introducing the cement composition into the subterranean formation; and (B) allowing the cement composition to set after introduction into the subterranean formation. | 06-09-2011 |
| 20110132606 | Apparatus and Method for Selectively Placing Additives in Wellbore Cement - An apparatus for releasing additive into cement pumped into an annular space between a wall of a wellbore and a casing inserted into the wellbore include a cement additive enclosed in a container disposed in the annular space at at least one selected position along the wellbore. The container is configured to release the additive at a selected time. | 06-09-2011 |
| 20110146987 | CHEMICAL DIVERSION TECHNIQUE - A method includes treating a first formation intersecting a wellbore, preparing a diversion fluid including an inactivated viscosifier and an inactivated thinning agent, and positioning an amount of the diversion fluid to isolate the first formation. The method further includes delivering an activator to the diversion fluid, thereby activating the inactivated viscosifier and triggering a thinning agent activation process. The method further includes treating a second formation intersecting the wellbore. The method further includes providing a residence time until the thinning agent activation process completes and the thinning agent breaks the viscosified diversion fluid. The method further includes flowing fluid back from the first formation and the second formation. | 06-23-2011 |
| 20110162845 | Lost Circulation Compositions and Associated Methods - An embodiment includes a method of servicing a well bore. The method may comprise introducing a lost circulation composition into a lost circulation zone, the lost circulation composition comprising hydraulic cement, nano-particles, amorphous silica, clay, and water. The method further may comprise allowing the lost circulation composition to set in the lost circulation zone. Another embodiment includes a lost circulation composition. The lost circulation may comprise hydraulic cement, nano-particles, amorphous silica, clay, and water. | 07-07-2011 |
| 20110203796 | EPOXY ACID BASED BIODEGRADABLE SET RETARDER FOR A CEMENT COMPOSITION - Compositions and methods according to the invention are directed to a cement composition for use in a subterranean formation. The cement composition comprises: (A) cement; (B) water; and (C) a polymer, wherein the polymer: (i) comprises a monomer or monomers selected from the group consisting of epoxysuccinic acid, a substituted epoxysuccinic acid, and an alkali metal salt, alkaline earth metal salt, or ammonium salt of any of the foregoing, and any combination of any of the foregoing; (ii) has the following characteristics: (a) is water soluble; and (b) is biodegradable; and (iii) is capable of providing: (a) a thickening time of at least 2 hours for a test composition at a temperature of 190° F. and a pressure of 5,160 psi; and (b) an initial setting time of less than 24 hours for the test composition at a temperature of 217° F. and a pressure of 3,000 psi, wherein the test composition consists of 860 grams of Class-H Portland cement, 325 grams of deionized water, and 0.4% by weight of the cement of the polymer. The method comprises the steps of: (A) introducing the cement composition into the subterranean formation; and (B) allowing the cement composition to set after introduction into the subterranean formation. | 08-25-2011 |
| 20110278006 | DEFLUIDIZING LOST CIRCULATION PILLS - A slurry for treating a wellbore that includes a base fluid; at least one fibrous structure; and a plurality of calcium silicate particles is disclosed. Methods of reducing loss of wellbore fluid in a wellbore to a formation using an LCM pill having calcium silicate particles therein is also disclosed. | 11-17-2011 |
| 20110297377 | STABLE ORGANIC-BASED FLUID LOSS ADDITIVE CONTAINING AN ORGANOPHILIC CLAY-BASED SUSPENDING AGENT FOR USE IN A WELL - According to an embodiment, a well treatment composition comprises: a water-soluble, organic liquid, wherein the organic liquid comprises the continuous phase of the well treatment composition, and wherein the organic liquid comprises a polyglycol or a derivative of polyglycol; a fluid loss additive, wherein the fluid loss additive is insoluble in the organic liquid, and wherein the fluid loss additive comprises a high molecular weight, water-swellable polymer; and a suspending agent, wherein the suspending agent comprises an organophilic clay, wherein the well treatment composition has an activity of at least 15%. According to another embodiment, a method of cementing in a subterranean formation comprises: introducing a cement composition into the subterranean formation, the cement composition comprising: (i) cement; (ii) water; and (iii) the well treatment composition; and allowing the cement composition to set after introduction into the subterranean formation. | 12-08-2011 |
| 20110297378 | Wellbore servicing compositions and methods of making and using same - A method of servicing a wellbore in a subterranean formation comprising preparing a wellbore servicing fluid comprising cement, water and a polyuronide polymer, placing the wellbore servicing fluid in the wellbore, and allowing the wellbore servicing fluid to set. A method of servicing a wellbore in a subterranean formation comprising preparing a wellbore servicing fluid comprising a highly methylated pectin, cementitious material and water into the wellbore, placing the wellbore servicing fluid in the wellbore, and allowing the wellbore servicing fluid to set. A wellbore servicing fluid comprising cement, water and a polyuronide polymer. | 12-08-2011 |
| 20110308799 | WATER-BASED FLUID LOSS ADDITIVE CONTAINING AN AMPHIPHILIC DISPERSANT FOR USE IN A WELL - According to an embodiment, a well treatment composition comprises: an aqueous liquid; a fluid loss additive, wherein the fluid loss additive comprises a high molecular weight, water-swellable polymer; and an amphiphilic dispersant, wherein the well treatment composition has an activity of at least 10%. According to another embodiment, a method of cementing in a subterranean formation comprises: introducing a cement composition into the subterranean formation, the cement composition comprising: (i) cement; (ii) water; and (iii) the well treatment composition; and allowing the cement composition to set. | 12-22-2011 |
| 20110308800 | FLUID LOSS ADDITIVE CONTAINING A BIODEGRADABLE GRAFTED COPOLYMER FOR A CEMENT COMPOSITION - According to an embodiment, a fluid loss additive comprises a biodegradable grafted copolymer, wherein the copolymer comprises: (i) a first polymer comprising a monomer or monomers selected from the group consisting of acrylamido-2-methylpropane sulfonic acid, N—N dimethyl acrylamide, N-vinyl-N-methylaceamide, N-vinylformamide, N-vinylpyrrolidone, acrylonitrile, acrylamide, acrylomorpholine, vinyl alcohol, maleic anhydride, acrylic acid, and any combination thereof; and (ii) a second polymer, wherein the first polymer is grafted onto the second polymer. According to another embodiment, a method of cementing in a low-temperature subterranean formation comprises: introducing a cement composition into the subterranean formation comprising: (i) cement; (ii) water; and (iii) the fluid loss additive; and allowing the cement composition to set. According to another embodiment, a method of cementing in a high-temperature subterranean formation comprises: introducing a cement composition into the subterranean formation comprising: (i) cement; (ii) water; (iii) a clay; and (iv) the fluid loss additive; and allowing the cement composition to set. | 12-22-2011 |
| 20120006546 | Compositions And Methods For Well Cementing - A retarder aid increases the applicable temperature range of phosphonate/borate cement-retarder systems to at least 302° C. (575° F.), and 207 MPa (30,000 psi). The retarder aid comprises a terpolymer of styrene sulfonate, maleic anhydride and acrylate of ethylene oxide. Cement slurries containing the retarder and retarder aid may be used for both primary-cementing and remedial-cementing applications. | 01-12-2012 |
| 20120012318 | Compositions And Methods For Servicing Subterranean Wells - Fluid compositions comprising an aqueous epoxy resin, a hardener and particles comprising silica, aluminosilicate or both are useful for establishing hydraulic isolation in cemented subterranean wells. Upon entering voids and cracks in or adjacent to the cement sheath, and contacting the set-cement surfaces, the composition reacts and forms a seal that prevents further leakage. | 01-19-2012 |
| 20120018154 | METHODS FOR COMPLETING THERMAL-RECOVERY WELLS - Methods for completing a well involve the use of computational models to design cement systems that are appropriate for the anticipated well conditions. Data from laboratory tests and/or numerical simulations may be employed in the models. The cement systems are designed to have a higher Young's modulus than the surrounding formation. In addition, the cement systems contain chemical-expansion agents that cause a microannulus to be deliberately formed at the cement/casing interface prior to the application of heat. The microannulus disappears during application of heat, pressure or both owing to casing expansion. | 01-26-2012 |
| 20120018155 | CEMENT COMPOSITIONS WITH A HIGH-DENSITY ADDITIVE OF SILICON CARBIDE OR SINTERED BAUXITE - A method of cementing in a subterranean formation comprising the steps of: (A) introducing a cement composition into the subterranean formation, the cement composition comprising: (i) cement; (ii) water; and (iii) a high-density additive selected from the group consisting of silicon carbide, sintered bauxite, and any combination thereof, wherein the cement composition has a density of at least 16 pounds per gallon; and (B) allowing the cement composition to set. According to an embodiment, the high-density additive is in a concentration of at least 30% by weight of the cement. A cement composition for use in an oil or gas well comprises: (A) cement; (B) water; and (C) a high-density additive selected from the group consisting of silicon carbide, sintered bauxite, and a combination thereof, wherein the high-density additive is in a concentration of at least 30% by weight of the cement, and wherein the cement composition has a density of at least 16 pounds per gallon. | 01-26-2012 |
| 20120024527 | CEMENT COMPOSITION CONTAINING A SUBSTITUTED ETHOXYLATED PHENOL SURFACTANT FOR USE IN AN OIL-CONTAMINATED WELL - According to an embodiment, a well treatment composition comprises a surfactant comprising a substituted ethoxylated phenol having at least one substituent, 1 to 14 moles of ethylene oxide, and the substituent being an alkyl, alkene, or alkyne with a carbon chain length in the range of 4 to 25, wherein the substituted ethoxylated phenol is selected from the group consisting of: ortho-, para-, or meta-substituted ethoxylated phenol; cardanol ethoxylate; derivatives thereof; and combinations of any of the foregoing. Preferably, the surfactant comprises cardanol ethoxylate, a substituted cardanol ethoxylate, and derivatives thereof. According to another embodiment, a method of cementing in a subterranean formation comprises: introducing a cement composition into the subterranean formation, wherein the cement composition comprises: (A) cement; (B) water; and (C) the surfactant; and allowing the cement composition to set. | 02-02-2012 |
| 20120031614 | APPARATUS AND METHODS FOR WELL CEMENTING - An apparatus for regulating fluid-flow during a primary cementing job comprises a bottom cementing plug, adapted to house a one-way valve and means to regulate fluid flow through the plug interior. The apparatus is useful for minimizing or preventing free fall or U-tubing during primary cementing. The apparatus is compatible with conventional cementing-plug launching systems. | 02-09-2012 |
| 20120090841 | Wellbore cementing compositions and methods of making and using same - A method of cementing a wellbore comprising preparing a wellbore cementing composition comprising a cementitious materials and a modified biopolymer additive wherein the modified biopolymer additive is the reaction product of a process comprising contacting a biopolymer and an organic carbonate to form a reaction mixture and subjecting the reaction mixture to a temperature of from about 100° F. to about 250° F. and placing the wellbore cementing fluid in the wellbore. A method of cementing a wellbore comprising contacting a modified biopolymer additive with a cementitious slurry to produce a wellbore cementing composition having an initial viscosity, v | 04-19-2012 |
| 20120090842 | METHODS AND COMPOSITIONS FOR SUSPENDING FLUIDS IN A WELLBORE - Methods for servicing subterranean wells are disclosed. Particularly, the use of a fiber-laden fluid to separate and prevent the commingling of two stationary process fluids after placement in the borehole of a subterranean well, or in a tubular body installed in a subterranean well. Embodiments relate to the prevention of a cement plug from descending through drilling fluid to the bottom of the well. It obviates the need for mechanical devices such as packers, or special adjustment of the process fluids' rheological properties. | 04-19-2012 |
| 20120103611 | APPLICATION OF A SPECIALIZED SLURRY USED FOR CEMENTING TUBULARS IN WELLS PRODUCING SYNTHESIS GAS BY UNDERGROUND COAL GASIFICATION - Synthesis gas is more effectively produced from the underground gasification of coal from a coal seam when the casing lining is cemented with a cementitious slurry containing a cementitious material, graphite and an aluminum silicate, such as metakaolin. The cementitious slurry of the cement mix sets as a cement sheath at bottomhole static temperatures less than or equal to 65° C. The set cement may withstand extreme dry heat temperatures which are greater than or equal to 800° C. | 05-03-2012 |
| 20120138299 | Wellbore servicing compositions comprising a fluid loss agent and methods of making and using same - A method of servicing a wellbore comprising preparing a composition comprising a calcium aluminate cement, water, and a fluid loss additive wherein the fluid loss additive comprises an acid gelling polymer, placing the composition in the wellbore, and allowing the composition to set. A method of servicing a wellbore comprising placing into a wellbore having a bottom hole static temperature of greater than about 50° F. and/or a pH of from about 3 to about 9 a cement slurry comprising a calcium aluminate cement having an aluminum oxide content of greater than about 60 wt. % based on the total weight of the calcium aluminate cement and an acid-gelling polymer wherein the cement slurry has a fluid loss at 10 cc/10 min. to about 600 cc/30 min. | 06-07-2012 |
| 20120138300 | METHOD OF CEMENTING USING POLYMERIC RETARDER - Set retarders of copolymers of at least one polymerizable ethylenically unsaturated monomer and at least one alkoxylated monomer are capable of delaying the hardening of a cementitious slurry when introduced into a subterranean formation until a downhole temperature greater than or equal to 500° F. is obtained, even in the absence of an intensifier. | 06-07-2012 |
| 20120145392 | COMPOSITIONS AND METHODS FOR WELL COMPLETIONS - Particulate polymeric materials may be added to a cement slurry to adjust the linear thermal-expansion coefficient of the set cement. The coefficient of the set cement is optimized by considering the linear thermal-expansion coefficient of the casing, as well as the mechanical properties of the formation rock. When placed in a subterranean well having at least one casing string, cement sheaths with optimal linear thermal-expansion coefficients may be subjected to lower compressive and tensile stresses during downhole-temperature changes. Such cement slurries are particularly advantageous in the context of thermal-recovery wells. | 06-14-2012 |
| 20120145393 | Methods and Compositions Comprising Cement Kiln Dust Having An Altered Particle Size - Methods and compositions are disclosed that comprise cement kiln dust having a mean particle size that has been altered. An embodiment discloses a subterranean treatment method comprising: introducing a treatment fluid into a subterranean formation, wherein the treatment fluid comprises cement kiln dust having a mean particle size that has been altered from its original size by grinding, separating, or a combination thereof. Another embodiment discloses a subterranean treatment method comprising: introducing a treatment fluid into a subterranean formation, wherein the treatment fluid comprises cement kiln dust having a mean particle size that has been reduced from its original size. | 06-14-2012 |
| 20120152539 | Settable Compositions Comprising Interground Perlite and Hydraulic Cement - Methods and compositions are disclosed that comprise interground perlite and hydraulic cement. An embodiment provides a method of cementing comprising: providing a settable composition comprising perlite, hydraulic cement, and water, wherein the perlite and hydraulic cement are interground prior to combination with the water to form the settable composition; and allowing the settable composition to set. | 06-21-2012 |
| 20120152540 | METHODS FOR CEMENTING IN A SUBTERRANEAN FORMATION USING A CEMENT COMPOSITION CONTAINING CALCIUM SILICATE HYDRATE SEEDS - According to an embodiment, a method of cementing in a subterranean formation comprises: introducing a cement composition into the subterranean formation, wherein the cement composition comprises: cement; water; and calcium silicate hydrate (C—S—H) seeds, wherein a test cement composition consisting essentially of: the cement; the water; and the C—S—H seeds, and in the same proportions as in the cement composition, develops a compressive strength of at least 1,200 psi (8.3 MPa) when tested at 24 hours, a temperature of 60° F. (15.6° C.), and a pressure of 3,000 psi (20.7 MPa); and allowing the cement composition to set. According to another embodiment, the C—S—H seeds are mesoscopic particles, nanoparticles, or combinations thereof, and wherein the C—S—H seeds are in a concentration in the range of about 1% to about 5% by weight of the cement. | 06-21-2012 |
| 20120152541 | Compositions and Methods for Well Completions - Well-cementing compositions for use in high-pressure, high-temperature (HPHT) wells are often densified, and contain weighting agents such as hematite, ilmenite, barite and hausmannite. The weighting agents are usually finely divided to help keep them suspended in the cement slurry. At high temperatures, finely divided weighting agents based on metal oxides react with the calcium-silicate-hydrate binder in set Portland cement, leading to cement deterioration. Finely divided weighting agents based on metal sulfates are inert with respect to calcium silicate hydrate; consequently, set-cement stability is preserved. | 06-21-2012 |
| 20120175118 | COMPOSITIONS AND METHODS FOR WELL COMPLETIONS - Expansive cements for use in cementing subterranean wells contain an encapsulated gas-generating substance. The gas-generating substance comprises one or more materials that release hydrogen, nitrogen or both. The gas-generating substance is encapsulated by a coating comprising a polymer. The coating prevents premature gas release at the surface during slurry mixing, and promotes gas release at a desired location in the subterranean well. The released gas may also control the internal pore pressure of the cement slurry, thereby inhibiting the invasion of formation fluids into the borehole. | 07-12-2012 |
| 20120193097 | Methods and Compositions Comprising Kiln Dust and Metakaolin - The present invention provides settable compositions and methods of using settable compositions that comprise a hydraulic cement; a partially calcined kiln feed comprising SiO | 08-02-2012 |
| 20120199350 | Low Heat of Hydration Cement Compositions and Methods of Using Same - A method of servicing a wellbore in a subterranean formation, comprising preparing a cement composition comprising water and a cementitious material, wherein the cementitious material further comprises blast furnace slag, vitrified shale, calcium sulfate hemi-hydrate or combinations thereof, and placing the cement composition in the wellbore. A cement composition comprising water and a cementitious material, wherein the cementitious material further comprises blast furnace slag, vitrified shale, calcium sulfate hemi-hydrate or combinations thereof. A cement composition comprising water and a cementitious material, wherein the cementitious material further comprises blast furnace slag. | 08-09-2012 |
| 20120205106 | Self-Adaptive Cements - A self-adaptive cement formulation includes cement, water and asphaltite-mineral particles. The set cement demonstrates self-healing properties when exposed to methane, and is particularly suited for well-cementing applications. After placement and curing, the self-healing properties help maintain zonal isolation should bonding be disrupted between the set cement and the formation or a casing string, should cracks or defects appear in the set-cement matrix, or both. | 08-16-2012 |
| 20120234541 | Settable Compositions Comprising Cement Kiln Dust and Rice Husk Ash and Methods of Use - Embodiments disclose method and compositions that comprise cement kiln dust and rice husk ash. An embodiment comprises a method of cementing comprising: placing a settable composition into a subterranean formation, the settable composition comprising cement kiln dust, rice husk ash, and water; and allowing the settable composition to set. | 09-20-2012 |
| 20120267108 | USE OF METHYLHYDROXYETHYL CELLULOSE AS CEMENT ADDITIVE - Methylhydroxyethyl cellulose may be used as an additive in cement slurries in the treatment of wells to prevent or reduce the occurrence of gas channeling. In addition to acting as a gas control additive, methylhydroxyethyl cellulose controls fluid loss, minimizes free fluid and stabilizes foam during cementing of the well. | 10-25-2012 |
| 20120279707 | Thermally-Activated, High-Temperature Cement Suspending Agent - Methods of providing a cementing fluid comprising an aqueous liquid, a hydraulic cement, and a cement suspending agent that comprises a crosslinked particulate formed by a reaction comprising a first monofunctional monomer, a primary crosslinker, and a secondary crosslinker; placing the cementing fluid in a wellbore penetrating a subterranean formation; and allowing the cementing fluid to set therein. | 11-08-2012 |
| 20120285682 | Settable Compositions Containing Metakaolin Having Reduced Portland Cement Content - Of the many compositions and methods provided herein, one method includes providing a settable fluid that comprises an aqueous-based medium, a lime composition, and a cementitious blend that comprises metakaolin particulates and aluminosilicate particulates, wherein the cementitious blend is essentially free of Portland cement; introducing the settable fluid into a wellbore penetrating a subterranean formation that comprises a corrosive component; and allowing the settable fluid to set therein. | 11-15-2012 |
| 20120318506 | Acid-Soluble Cement Compositions Comprising Cement Kiln Dust and Methods of Use - The present invention, relates to acid-soluble cement compositions that comprise cement kiln dust (“CKD”) and associated methods of use. An embodiment provides a method of cementing comprising: providing an acid-soluble cement composition comprising a kiln dust and water; allowing the acid-soluble cement composition to set to form an acid-soluble hardened mass; and contacting the acid-soluble hardened mass with an add. | 12-20-2012 |
| 20120325477 | Settable Compositions Comprising Unexpanded Perlite and Methods of Cementing in Subterranean Formations - An embodiment of the present invention comprises a method of cementing comprising: placing a settable composition into a well bore, the settable composition comprising unexpanded perlite, cement kiln dust, and water; and allowing the settable composition to set. Another embodiment of the present invention comprises a method of cementing comprising: placing a settable composition into a well bore, the settable composition comprising ground unexpanded perlite, Portland cement interground with pumicite, and water; and allowing the settable composition to set. Yet another embodiment of the present invention comprises a settable composition comprising: ground unexpanded perlite; cement kiln dust; and water. | 12-27-2012 |
| 20120325478 | Cement Compositions and Methods of Using the Same - The present invention relates to cement compositions and their use in cementing operations. The cements comprise an aluminosilicate; a sodium aluminate, a calcium aluminate, a potassium aluminate, or a combination thereof; and water. In some cases the cement does not include Portland cement. The cement may be used in a subterranean formation having corrosive components therein, wherein the set cement sheath is resistant to degradation from the corrosive components within the subterranean formation. | 12-27-2012 |
| 20130000904 | Cement Retarder and Method of Using the Same - The reaction product of a polyhydroxy compound and borax is used as a cement retarder for slurries introduced into a wellbore. The molar ratio of the polyhydroxy compound to boron, derived from the borax, is from 1:1 to about 4:1. The polyhydroxy compound may be a sugar such as a gluconic acid, gluconate or glucoheptonate or a salt thereof. | 01-03-2013 |
| 20130037267 | System and Method for Improving Zonal Isolation in a Well - The disclosure relates to a system ( | 02-14-2013 |
| 20130043026 | Compositions And Methods For Servicing Subterranean Wells - Resilient graphitic carbon may be an effective lost-circulation control agent for well-cementing compositions. During primary or remedial cementing, the carbon particles may hinder or prevent the egress of the well-cementing composition from the wellbore into subterranean formations via formation fissures or cracks. The carbon particles may also be added to spacer fluids, chemical washes or both. | 02-21-2013 |
| 20130043027 | Zonal Isolation Systems For Subterranean Wells - A zonal isolation system for a subterranean well comprises at least one tubular body that comprises at least one semi-permeable membrane, or at least one removable material or both. The semi-permeable membrane is permeable to one or more activators that may cause a cement slurry to begin setting. The tubular body may comprise openings that are covered by or filled with a removable material. After a primary cementing treatment has been completed, the activator may be introduced into the tubular body, whereupon it passes through the tubular body and out into the cement slurry. | 02-21-2013 |
| 20130062062 | SYSTEM AND METHOD FOR A SLOTTED LINER SHOE EXTENSION - A system and method for extending a slotted liner shoe is disclosed. According to one embodiment, a low density material is injected into a liner having a plurality of openings. The liner is suspended below a cemented casing in a wellbore of a well in a subterranean formation. The low density material extrudes through a lower portion of the liner into an annulus between the liner and the wellbore. A cement is circulated into the liner above the low density material. The cement extrudes through an upper portion of the liner into the annulus between the liner and the wellbore Water is displaced from the wellbore, and a solid cemented casing string is formed at a desired depth. | 03-14-2013 |
| 20130105161 | Delayed, Swellable Particles for Prevention of Fluid Migration Through Damaged Cement Sheaths | 05-02-2013 |
| 20130118744 | Self-Degrading High Temperature Stable Gel for Downhole Applications - A method of treating a subterranean formation including providing a treatment fluid comprising an aqueous carrier fluid, a crosslinking agent, a pH-adjusting agent, and a terpolymer that comprises 2-acrylamido-2-methylpropanesulfonic acid, acrylamide, and acrylic acid monomer units, or any salt thereof, where the treatment fluid does not include any gel stabilizers, or only minimal amounts of gel stabilizers. The treatment fluid is introduced into a subterranean formation and is allowed to form a gel in the subterranean formation. The gel is broken, without using an external breaker, after the gel has been in the subterranean formation for at least about one day. | 05-16-2013 |
| 20130153222 | LIGHTWEIGHT HOLLOW PARTICLES FOR USE IN CEMENTING - A lightweight composite having an activated surface contains a lightweight hollow core particle having cement grains which may be adhered to the hollow core or embedded in the surface of the hollow core. The hollow core particle may be prepared from calcium carbonate and a mixture of clay, such as bentonite, and a glassy inorganic material, such as glass spheres, glass beads, glass bubbles, borosilicate glass and fiberglass. | 06-20-2013 |
| 20130255949 | Cement Compositions Comprising Lignite-Based Grafted Copolymers and Methods of Use - A variety of methods and compositions are disclosed, including, in one embodiment, a method of cementing in a subterranean formation comprising: introducing a cement composition comprising cement, water, and a lignite-based copolymer into a subterranean formation, wherein the lignite-based copolymer comprises a lignite backbone, a first grafted monomer selected from the group consisting of -acrylamido-2-methylpropanesulfonic acid, a salt of 2-acrylamido-2-methylpropanesulfonic acid, and a second grafted monomer comprising N,N-dimethylacrylamide; and allowing the cement composition to set in the subterranean formation, wherein cement composition has a transition time of less than or equal to about 150 minutes. | 10-03-2013 |
| 20130284439 | WIDE TEMPERATURE RANGE CEMENT RETARDER - According to an embodiment, a composition is provided that can be used in a cementing. The composition includes at least:
| 10-31-2013 |
| 20130292120 | BIODEGRADABLE ACTIVATORS TO GEL SILICA SOL FOR BLOCKING PERMEABILITY - A method of treating a treatment zone in a well to reduce the permeability of the treatment zone including the steps of: introducing into the treatment zone a water-based treatment fluid comprising: an aqueous silica sol; and a water-soluble chemical activator for gelling the silica sol, wherein the chemical activator is selected from the group consisting of: phytic acid, methylglycinediacetic acid, a water-soluble polyepoxysuccinic acid, salicylic acid, ascorbic acid, tannic acid, and an alkali metal salt or ammonium salt of any of the foregoing; and shutting in treatment zone for at least a sufficient time to allow the treatment fluid to in-situ form a solid gel at a design temperature for the method. Alternatively, a first treatment fluid including the aqueous silica sol and a second treatment fluid including the chemical activator can be introduced into the treatment zone separately, in any order. | 11-07-2013 |
| 20130299170 | CALCIUM ALUMINATE CEMENT COMPOSITION CONTAINING A SET RETARDER OF AN ORGANIC ACID AND A POLYMERIC MIXTURE - A cement composition for use in an oil or gas well, the cement composition comprises: a calcium aluminate cement; water; an organic acid; and a polymeric mixture comprising: (A) water; (B) citric acid; (C) a first polymer, wherein the first polymer: (i) comprises a cellulose backbone and carboxymethyl functional groups; and (ii) has a molecular weight of less than 100,000; and (D) a second polymer, wherein the second polymer: (i) comprises a lignosulfonate; and (ii) has a molecular weight of less than 100,000, wherein a test composition consisting essentially of: the cement; the water; the organic acid; and the polymeric mixture, and in the same proportions as in the cement composition has a thickening time of at least 5 hours at a temperature of 300° F. (148.9° C.) and a pressure of 10,000 psi (68.9 MPa). | 11-14-2013 |
| 20130299171 | OIL AND GAS WELL CEMENT SYSTEMS USING ELEMENTAL SULFUR - A cement composition for cementing an oil or gas well includes Portland cement, water and a sulfur component. The cement composition may be used to cement a well bore by creating a cement slurry including the sulfur component, pumping the slurry into the well bore to a selected location and allowing it to solidify. | 11-14-2013 |
| 20130312968 | SUBTERRANEAN TREATMENT FLUID COMPOSITION AND METHOD OF TREATMENT - A thickened composition comprising a polymer, a divalent ions source, water and cement is disclosed. Such composition enables fluid loss reduction and higher gel strength. This may be useful for treating a well for example as a fluid spacer or a scavenger; this may also be used a hydraulic fracturing fluid. | 11-28-2013 |
| 20130319672 | Methods of Using Wellbore Servicing Compositions - A method of servicing a wellbore comprising preparing a composition comprising a non-aqueous carrier fluid, an oil-wetting surfactant, a water-imbibition enhancing surfactant, and a cementitious material; placing the composition within a detrimentally permeable zone; and contacting the composition with water. A method of servicing a wellbore comprising placing a composition comprising a non-aqueous carrier fluid, an oil-wetting surfactant, a water-imbibition enhancing surfactant, and a cementitious material into the wellbore wherein the wellbore comprises hydrocarbon-producing zones and water-producing zones and wherein the composition enters the water-producing zone and forms a solid mass that obstructs the flow of water in the water-producing zone. A method of servicing wellbore comprising placing a composition comprising a non-aqueous carrier fluid, an oil-wetting surfactant, a water-imbibition enhancing surfactant, and a cementitious material into a lost circulation zone within the wellbore; and contacting the composition in situ with a water source. | 12-05-2013 |
| 20140000892 | Use of an Additive Compostion for Cementing Bore Wells | 01-02-2014 |
| 20140000893 | Set-Delayed Cement Compositions Comprising Pumice and Associated Methods | 01-02-2014 |
| 20140020895 | Foaming of Set-Delayed Cement Compositions Comprising Pumice and Hydrated Lime - A variety of methods and compositions are disclosed, including, in one embodiment a method a cementing in a subterranean formation comprising: providing a set-delayed cement composition comprising water, pumice, hydrated lime, and a set retarder; foaming the set-delayed cement composition; activating the set-delayed cement composition; introducing the set-delayed cement composition into a subterranean formation; and allowing the set-delayed cement composition to set in the subterranean formation. Additional methods, foamed set-delayed cement composition, and systems for cementing are also provided. | 01-23-2014 |
| 20140054038 | Methods for Completing Subterranean Wells - Well cement compositions comprise water, an inorganic cement and one or more fillers having a thermal expansion coefficient (CTE) that is lower than about 3×10 | 02-27-2014 |
| 20140054039 | MATERIALS AND METHODS TO PREVENT FLUID LOSS IN SUBTERRANEAN FORMATIONS - Methods of preventing fluid loss in a downhole formation may include preparing an emulsion containing: an oleaginous phase; an aqueous phase; one or more fibers; injecting the emulsion into the wellbore; allowing the one or more fibers within the emulsion to seal a permeable interval of the formation. In another aspect, methods of stimulating hydrocarbon production in a wellbore may include: injecting a diverting treatment into a subterranean formation, the diverting treatment containing: a non-oleaginous fluid, an oleaginous fluid, and one or more fibers; injecting a stimulating treatment into the subterranean formation; and stimulating the production of hydrocarbons. | 02-27-2014 |
| 20140060835 | INVERT EMULSION TRANSITION FLUID CONTAINING CALCIUM ALUMINATE CEMENT - A transition fluid comprises: a hydrocarbon liquid, wherein the hydrocarbon liquid is the external phase of the transition fluid; an aqueous liquid, wherein the aqueous liquid is the internal phase of the transition fluid and wherein the aqueous liquid comprises a water-soluble salt; and a calcium aluminate cement. A method of cementing in a subterranean formation comprises: introducing the transition fluid into the subterranean formation; and introducing a cement composition into the subterranean formation, wherein the step of introducing the cement composition is performed after the step of introducing the transition fluid and wherein the cement composition comprises cement and water. | 03-06-2014 |
| 20140060836 | Methods for Maintaining Zonal Isolation in A Subterranean Well - A cement for use in wells in which carbon dioxide is injected, stored or extracted, comprises elastomer particles. In the event of cement-matrix failure, or bonding failure between the cement/casing interface or the cement/borehole-wall interface, the elastomer particles swell when contacted by carbon dioxide. The swelling seals voids in the cement matrix, or along the bonding interfaces, thereby restoring zonal isolation. | 03-06-2014 |
| 20140076561 | MAGNESIUM CHLORIDE IN ALCOHOLIC SOLVENT FOR SOREL CEMENT - A non-hydraulic cement composition including: (i) a non-aqueous liquid phase comprising one or more organic compounds characterized by: (a) having at least one hydroxyl group on a carbon atom, (b) being a liquid when pure under Standard Laboratory Conditions, and (c) being at least soluble in water; (ii) one or more magnesium chloride compounds selected from the group consisting of: magnesium chloride, a magnesium chloride hydrate, and any combination thereof; and (iii) magnesium oxide; wherein the one or more organic compounds comprise at least 40% by weight of the non-aqueous liquid phase excluding the weight of any dissolved solids. A method of treating a well including the steps of: (A) forming the non-hydraulic cement composition; and (B) introducing the non-hydraulic cement composition into the well. | 03-20-2014 |
| 20140083700 | Compositions and Methods for Plug Cementing - Compositions comprise water, an acrylate monomer or a methacrylate monomer or a combination thereof, a free-radical polymerization initiator and a water-soluble bromide salt. Such compositions have utility in the context of remedial cementing, plug cementing in particular. The compositions may be pumped into a subterranean well, where they polymerize and form a support on which a cement plug may sit. The support may maintain the position of the cement plug in the wellbore and minimize cement-plug contamination. | 03-27-2014 |
| 20140083701 | Cement Set Activators for Set-Delayed Cement Compositions and Associated Methods - Disclosed herein are cement compositions and methods of using set-delayed cement compositions in subterranean formations. In one embodiment, a method of cementing in a subterranean formation is described. The method may comprise providing a set-delayed cement composition comprising water, pumice, hydrated lime, and a set retarder; activating the set-delayed cement composition with a liquid additive to produce an activated cement composition, wherein the liquid additive comprises a monovalent salt, a polyphosphate, a dispersant, and water; and allowing the activated cement composition to set. | 03-27-2014 |
| 20140090842 | Cement Compositions Comprising Deagglomerated Inorganic Nanotubes and Associated Methods - A variety of methods and compositions are disclosed, including, in one embodiment, a method of cementing comprising: providing an aqueous dispersion comprising deagglomerated inorganic nanotubes and water; preparing a cement composition using the aqueous dispersion; introducing the cement composition into a subterranean formation; and allowing the cement composition to set. Another method comprises a method of cementing comprising: providing an ultrasonicated aqueous dispersion comprising deagglomerated nanoparticles, a dispersing agent, and water; preparing a cement composition using the aqueous dispersion; introducing the cement composition into is subterranean formation; and allowing the cement composition to set. | 04-03-2014 |
| 20140090843 | Use of Synthetic Smectite in Set-Delayed Cement Compositions - Disclosed herein are cement compositions and methods of using set-delayed cement compositions in subterranean formations. In one embodiment a method of cementing in a subterranean formation is described. The method comprises providing a set-delayed cement composition comprising pumice, hydrated lime, a cement set retarder, a synthetic smectite, and water; introducing the set-delayed cement composition into a subterranean formation; and allowing the set-delayed cement composition to set in the subterranean formation. | 04-03-2014 |
| 20140102704 | Cement Compositions Containing Metphosphate and Methods of Use - In an embodiment, a cement composition includes: (i) hydraulic cement, wherein the hydraulic cement has a ratio of CaO to SiO | 04-17-2014 |
| 20140110114 | Methods for Maintaining Zonal Isolation in A Subterranean Well - A cement for use in wells in which hydrogen sulfide is present, comprises elastomer particles. In the event of cement-matrix failure, or bonding failure between the cement/casing interface or the cement/borehole-wall interface, the elastomer particles swell when contacted by hydrogen sulfide. The swelling seals voids in the cement matrix, or along the bonding interfaces, thereby restoring zonal isolation. | 04-24-2014 |
| 20140158354 | VISCOUS SETTABLE FLUID FOR LOST CIRCULATION IN SUBTERRANEAN FORMATIONS - A method of treating a well the method including the steps of: (A) forming a fluid including: (i) a shear-thinning aqueous liquid phase; and (ii) an inorganic setting material; wherein the fluid is shear-thinning, pumpable, and settable; and (B) introducing the fluid into the well. | 06-12-2014 |
| 20140174741 | Settable Compositions and Methods of Use - Disclosed herein are settable compositions and methods of using settable compositions in a wellbore. In one embodiment a method of introducing a settable composition into a wellbore is described. The method comprises providing a settable composition comprising pumice, hydrated lime, a set retarder, and water. Introducing the settable composition into a wellbore. Allowing the settable composition to remain static in the wellbore, wherein the settable composition remains in a pumpable fluid state for a period of about 1 day or longer while static in the wellbore. | 06-26-2014 |
| 20140190696 | Lost Circulation Treatment Fluids Comprising Pumice and Associated Methods - Disclosed are lost circulation treatment fluids and methods of sealing lost circulation zones. Embodiments include a method of sealing a lost circulation zone. The method comprises circulating a lost circulation treatment fluid in a wellbore, wherein the lost circulation treatment fluid comprises: pumice, hydrated lime, a set retarder, and water; and allowing the lost circulation treatment fluid to set in the lost circulation zone to seal the lost circulation zone. | 07-10-2014 |
| 20140202698 | Set-Delayed Cement Compositions Comprising Pumice and Associated Methods - Disclosed herein are cement compositions and methods of using set-delayed cement compositions in subterranean formations. An embodiment includes a method of cementing in a subterranean formation comprising: providing a cement composition comprising water, pumice, hydrated lime, a set retarder, and a strength enhancer, wherein the strength enhancer comprises at least one material selected from the group consisting of cement kiln dust, slag, amorphous silica, a pozzolan, and any combination thereof; introducing the cement composition into the subterranean formation; and allowing the cement composition to set in the subterranean formation. | 07-24-2014 |
| 20140209308 | High Efficiency Radiation-Induced Triggering for Set-On-Command Compositions and Methods of Use - Compositions and methods for hydrocarbon exploration and production operations, such as subterranean cementing operations that allow for greater control over the setting of fluids or slurries used during such operations including placing a sealant composition having a polymerizable additive into a wellbore penetrating a subterranean formation, and subjecting the sealant composition to a radiation dose of from about 1 to about 1000 grays, so as to form a seal therein. | 07-31-2014 |
| 20140262269 | METHOD TO REPAIR LEAKS IN A CEMENTED ANNULUS - A method of providing pressure containment of a well having a well annulus. The well annulus contains a set cement, and the cement contains flow paths which communicate a well pressure to the surface. The method includes placing a containment cement slurry in a reception area at the top of the well and installing an injection delivery system within the reception area. The method may further include preparing a settable fluid for injection into the flow paths and injecting the settable fluid through the injection delivery system into the flow paths. In one disclosed embodiment, the injection delivery system may include a series of injection tubulars configured to deliver the settable fluid to the flow paths. The injection delivery system may include a template having a first, second, third and fourth injection tubular. According to this disclosure, the method may also include allowing the settable fluid to set, monitoring the pressure of the well annulus, and performing remedial well action based on the observed pressures. | 09-18-2014 |
| 20140299321 | Tubless Proppant Blending System for High and Low Pressure Blending - Fracturing slurries are prepared on the fly using a solids pump to feed the solid such as a gel into a liquid stream of normally water for pumping downhole with a large capacity triplex pump. The solids pump is preferably a Posimetric® style which delivers the solid into the fluid pipeline in a manner that keeps fluid from backing into the solids hopper above the solids pump. A separate fluid tank is connected to a fluid pump to pressurize a suction line to a boost pump before reaching the triplex pump and pumping into the subterranean formation. The solids pump can deliver between the fluid and boost pumps in which case the solids go through the triplex pump or alternatively the solids can be delivered into the higher pressure discharge line of the triplex pump. | 10-09-2014 |
| 20140311742 | Compositions and Methods for Servicing Subterranean Wells - This invention relates to methods for servicing subterranean wells, in particular, fluid compositions and methods for remedial operations during which the fluid compositions are pumped into a wellbore and make contact with well cements placed during primary cementing or previous remedial cementing operations. | 10-23-2014 |
| 20140318784 | Pumice-Containing Remedial Compositions and Methods of Use - Methods and compositions are provided that utilize pumice and various additives. An embodiment provides a method of remedial cementing in a subterranean formation comprising: providing a lightweight settable composition comprising pumice, a calcium activator, and water, wherein the lightweight settable composition has a density of less than about 13.5 pounds per gallon and is free of Portland cement; and using the lightweight settable composition in a remedial cementing method to seal one or more voids in a well bore. Also provided are pumice-containing remedial compositions and systems for remedial cementing. | 10-30-2014 |
| 20140318785 | Wellbore Servicing Compositions and Methods of Making and Using Same - A method of servicing a wellbore in a subterranean formation comprising placing a liquid additive composition comprising (i) a liquid non-aqueous continuous phase; (ii) a discontinuous phase comprising a water-soluble polymeric additive; (iii) emulsion-stabilizing and water-wetting surfactants and (iv) a discontinuous phase release control agent. A method of servicing a wellbore comprising placing a wellbore servicing fluid comprising (i) a cementitious material and (ii) a liquid additive composition comprising a fluid loss additive and a discontinuous phase release control agent into the wellbore and/or subterranean formation; and allowing the cement to set. A wellbore servicing composition comprising a cement slurry and a liquid additive composition comprising (i) an acid gelling polymer (ii) an invert emulsion; (iii) a water-wetting surfactant; (iv) an emulsion-stabilizing surfactant; and (v) a discontinuous phase control release agent wherein the acid-gelling polymer is disposed within the invert emulsion. | 10-30-2014 |
| 20140318786 | COMPOSITIONS AND METHODS FOR SERVICING SUBTERRANEAN WELLS - Subterreanean formations penetrated by a wellbore may be stimulated by injecting a well-treatment fluid at a rate and pressure sufficient to create and propagate a fracture in the formation. The treatment fluid comprises a first slurry comprising at least one inorganic cement, water and at least one disruptive agent that may cause the formation of open channels in the fracture through which hydrocarbons in the formation may flow into the wellbore. The disruptive agent may comprise (but would not be limited to) water-soluble polymers that cause flocculation and agglomeration of cement solids, expansive agents, explosive agents, degradable materials, or a combination thereof. | 10-30-2014 |
| 20140326455 | Methods and Compositions for Treating a Subterranean Formation with Salt-Tolerant Cement Slurries - Methods and compositions for treating a subterranean formation with salt-tolerant cement slurries including treating a salt-containing subterranean formation having sodium salts, potassium salts, magnesium salts, calcium salts, or any combination thereof comprising: providing a salt-tolerant cement slurry comprising: a base fluid, a cementitious material, a pozzolanic material, a salt-tolerant fluid loss additive, a salt additive, and optionally, an elastomer, a weight additive, a fluid loss intensifier, a strengthening agent, a dispersant, or any combination thereof; introducing the salt-tolerant cement slurry into the subterranean formation; and allowing the salt-tolerant cement slurry to set. | 11-06-2014 |
| 20140332216 | POZZOLAN FOR USE IN A CEMENT COMPOSITION HAVING A LOW HEAT OF HYDRATION - A method of cementing in a subterranean formation comprises: introducing a cement composition into a wellbore penetrating the subterranean formation, wherein at least a portion of the subterranean formation has a temperature less than or equal to the freezing point of an aqueous liquid, and wherein the cement composition comprises: (A) cement; (B) water; and (C) a pozzolan, wherein the cement composition has a heat of hydration of less than 50 BTU per pound; and causing or allowing the cement composition to set in the wellbore after the step of introducing. The pozzolan can have a calcium oxide concentration of less than 15% by weight of the pozzolan, and the pozzolan can have a concentration of at least 15% by weight of the cement. Gas hydrates can be present in or adjacent to a portion of the well. | 11-13-2014 |
| 20140332217 | PORTLAND SAUDI CEMENT TYPE-G WITH NANOSILICA ADDITIVE FOR HIGH PRESSURE-HIGH TEMPERATURE APPLICATIONS - The Portland Saudi cement type-G with nanosilica additive for high pressure-high temperature applications comprises a mixture of about 1.0%-2.0% by dry weight of nanoparticles of silica; and type-G Portland Saudi cement forming the balance of the mixture. The cement so formed is suitable for use in deep petroleum wells, which require cement that can be introduced under high temperature (about 290° F.) and high pressure (about 8,000-9,000 psi) conditions. The addition of nanosilica shortened the thickening time for the cement slurry and caused a growth in the average compressive strength of the cement samples. In addition, the nanosilica did not cause any free water separation from the cement slurry column after aging. | 11-13-2014 |
| 20140338909 | CEMENT COMPOSITIONS COMPRISING PARTICULATE FOAMED ELASTOMERS AND ASSOCIATED METHODS - Methods of subterranean cementing involving cement compositions comprising particulate foamed elastomers and associated methods are provided. In one embodiment, the methods comprise introducing a cement composition into a subterranean location, wherein the cement composition comprises a hydraulic cement, a particulate foamed elastomer, and an aqueous fluid; and allowing the cement composition to set in the subterranean location. | 11-20-2014 |
| 20140360721 | CEMENT COMPOSITION WITH FLY ASH - A cement composition comprising industrial waste containing calcium oxide and a retarder is disclosed. The cement composition is free of Portland cement. The composition also includes an alkali metal oxide, a hydrocarboxylic acid, and a sulphate compound. The cement may be used in methods for cementing subterranean formations such as oil and gas wells. | 12-11-2014 |
| 20140367104 | Compositions and Methods for Completing Subterranean Wells - High-specific-gravity micronized particulates, added to cement slurries in conjunction with certain high-molecular-weight water-soluble polymers, improve fluid-loss control of cement slurries during placement in subterranean wells. The particulates may have a specific gravity higher than 3, and a median particle size smaller than 3 μm. The particulates may include barite, manganese tetraoxide, titanium oxide, iron titanium oxide and aluminum oxide. | 12-18-2014 |
| 20140374097 | Wellbore Servicing Compositions and Methods of Making and Using Same - A method of servicing a wellbore in a subterranean formation comprising preparing a wellbore servicing fluid comprising a sealant material, helical fibers and a base fluid, placing the wellbore servicing fluid in the wellbore and/or subterranean formation, and allowing the wellbore servicing fluid to set therein. | 12-25-2014 |
| 20140374098 | Set-Delayed Cement Compositions Comprising Pumice and Associated Methods - A variety of methods and compositions are disclosed, including, in one embodiment, a method of cementing in a subterranean formation, comprising: providing a set-delayed cement composition comprising water, pumice, hydrated lime, and a set retarder; activating the set-delayed cement composition; introducing the set-delayed cement composition into a subterranean formation; and allowing the set-delayed cement composition to set in the subterranean formation. | 12-25-2014 |
| 20150007992 | USE OF TERPOLYMERS AS FLUID LOSS ADDITIVES IN WELL CEMENTING - What is proposed is the use of a terpolymer comprising 5-95 mol % of 2-acrylamido-2-methylpropanesulfonic acid, 5-95 mol % of N,N-dimethylacrylamide and 5-12 mol % of acrylic acid as a fluid loss additive in well cementing. | 01-08-2015 |
| 20150041134 | Cement Slurry Compositions and Methods - A cement slurry composition is described as having cement, water, and organic polymer particles. The composition also includes non-ionic surfactants, which may contain ethoxylate groups or contain both ethoxylate groups and propoxylate groups in the hydrophilic part. The non-ionic surfactant acts to disperse the hydrophobic polymeric particles in the slurry, thereby reducing mixing time. The cement slurry composition is prepared and then pumped into the subterranean well and placed in a zone of the subterranean well. Time is then allowed for the cement slurry composition to set and form a solid mass in the zone. | 02-12-2015 |
| 20150090451 | Compositions and Methods for Cementing Wells - A well cementing composition comprises water, an inorganic cement, a gas generating agent and a gas stabilizer. The gas generating agent may contain materials that release hydrogen gas, carbon dioxide gas or nitrogen gas or combinations thereof. The gas stabilizer comprises an aqueous mixture comprising polyglycols, oxyalkylates and methanol, or coco trimethyl ammonium chloride, or a mixture comprising ammonium fatty alcohol ether sulfate and ethylene glycol monobutyl ether, or combinations thereof. When used to cement a subterranean well, the compositions improve the compressive strength, increase the rate at which compressive strength develops, preserve cement homogeneity, or enhance cement expansion or a combination thereof. | 04-02-2015 |
| 20150292279 | Method of Stopping Lost Circulation - A method for forming a seal to subterranean fractures or other voids penetrated by a wellbore comprises a particulate sealing formulation of fast sealing and/or fast strengthening. To achieve fast sealing, the particulate formulation is comprised of multiple groups of particulates of a narrow particle size distribution. Furthermore, the method comprises minimizing the spurt loss of a formulation by adjusting its particulates larger than D30, based on evaluation with a slot disk test method. The fast strengthening of the formulation is achieved by fast accumulation of particulates. Furthermore, the method comprises maximizing the fluid loss after spurt of a formulation by adjusting its particulates smaller than D30 or adding some diatomaceous earth or selecting particulates of a D75 larger than 75 microns and with a narrow particle size distribution. At least 5% of the sealing particulates by weight of the total particulates are smaller than 200 micron and acid soluble. | 10-15-2015 |
| 20150299555 | Additive for Well Cementing Applications - An additive for Portland-cement slurries comprises an alkanolamine polyborate. When added in concert with a set retarder, the alkanolamine polyborate minimizes or prevents premature gelation during placement in a subterranean well. The additive is particularly useful for highly reactive cements, and may reduce the amount of set retarder required to achieve a given placement time. | 10-22-2015 |
| 20150321953 | Cement Blend Compositions - A computer simulator predicts the performance of neat Portland cement systems, or Portland cement systems containing supplementary cementing materials (SCM). Parameters to be entered into the simulator include the cement blend composition, the Bogue composition of the Portland cement, the Blaine surface area of the Portland cement, the absolute density of the Portland cement, the SCM densities, the SCM chemical activity indices, the curing-temperature profile and the curing-pressure profile. The predictions may be verified by laboratory testing before using the cement system during a cementing treatment. | 11-12-2015 |
| 20150330179 | Compositions and Methods for Well Completions - Thermal recovery wells, geothermal wells and deep hot wells may involve the application of heat to the cement sheath and well casing at some time after the cement has set. Such heating may subject the cement sheath to mechanical burdens that may lead to failure. Such burdens may be lessened if the linear thermal coefficient of expansion is variable and approximates that of the well casing. A variable linear thermal coefficient of expansion may be achieved by incorporating blast furnace slag, silica fume, fly ash or a combination thereof in the cement blend. | 11-19-2015 |
| 20150337194 | SET ON DEMAND CEMENT COMPOSITIONS FOR CURING FLUID LOSS - Cement compositions containing a cement component and an oil-immiscible solvent and methods for using same are provided. In another aspect, methods for sealing subterranean zones are provided that include emplacing a cement composition into a wellbore containing a cement component and an oil-immiscible solvent, contacting the cement composition with a water source, and reacting the cement composition with the water source to form a hardened cement. | 11-26-2015 |
| 20150353810 | CEMENTING COMPOSITION COMPRISING NONIONIC HYDROPHOBICALLY-MODIFIED CELLULOSE ETHERS AND ITS USE - Disclosed is a composition and a method for cementing a casing in a borehole of a well using an aqueous cementing composition comprising (a) water, (b) a cementing composition comprising (i) a hydraulic cement, (ii) a hydrophobically modified polymer, (iii) a dispersant, and optionally (iv) one or more other additives conventionally added to aqueous cementing compositions useful in cementing casings in the borehole of wells. Preferably the hydrophobically modified hydroxyethyl cellulose has an ethylene oxide molar substitution of from 0.5 to 3.5, a hydrophobe degree of substitution of from 0.001 to 0.025, and a weight-average molecular weight of from 500,000 to 4,000,000 Daltons and the dispersant is sulfonated polymer, melamine formaldehyde condensate, a naphthalene formaldehyde condensate, a branched or non-branched polycarboxylate polymer. Preferably, the aqueous cementing composition is pumped downwardly into said casing, pumped upwardly into the annulus surrounding said casing until said aqueous composition fills that portion of the annular space desired to be sealed, and then maintaining said aqueous cementing composition in place until the cement sets. | 12-10-2015 |
| 20150361760 | Materials with nanomaterials for well operations - Wellbore materials with nanomaterial therein, e.g., cements, polymers, composites, shape memory material, swellable material, and epoxies, and systems and methods using such materials, which, in certain aspects, are methods for cementing casing in a wellbore with such cement; the material being heatable material in some aspects, and being one or a combination of electrically resistively heatable material, microwave heatable material, and/or material heatable by the application thereto of a magnetic field. This abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure and is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims, 37 C.F.R. 1.72(b). | 12-17-2015 |
| 20150376491 | LOST CIRCULATION COMPOSITION FOR FRACTURE SEALING - A lost circulation material and method for well treatment employing the material that is effective at sealing or plugging fractured zones and has utility over a wide range of temperatures, including high temperatures. The lost circulation material includes particulate material to quickly de-fluidize the fluid formulation, fibrous material to suspend particles in the slurrified form of the composition and increase the shear strength of the resultant seal, and non-Portland cement material for increasing the compressive strength. | 12-31-2015 |
| 20160010424 | MAGNETORHEOLOGICAL FLUIDS AND METHODS OF USING SAME | 01-14-2016 |
| 20160017688 | Encapsulated Fluid-Loss Additives for Cement Compositions - Methods and compositions for cementing in a subterranean formation. An example method of cementing comprises providing a cement composition comprising a hydraulic cement, water, and an encapsulated fluid-loss additive; wherein the encapsulated fluid-loss additive comprises a fluid-loss additive and an encapsulation material; placing the cement composition in a selected location; and allowing the cement composition to set. | 01-21-2016 |
| 20160069153 | GEL, LEAKING STOPPAGE METHOD USING THE SAME AND WELL KILL LEAKING STOPPAGE METHOD USING THE SAME - The present invention relates to the field of well drilling, and particularly to a gel, a plugging method using the same, and a well killing and plugging method using the same. The gel is a water soluble hydrophobic associated polymer copolymerized by hydrophobic monomer and nonionic monomer, or a water soluble hydrophobic associated polymer copolymerized by hydrophobic monomer, nonionic monomer, and alkene salt monomer. The copolymerization method thereof may be a copolymerization post-hydrolysis method or a copolymerization co-hydrolysis method. The leaking stoppage method using the gel comprises: adding 8-18 | 03-10-2016 |
| 20160115364 | WELLBORE SERVICING COMPOSITIONS AND METHODS OF MAKING AND USING SAME - A method of servicing a wellbore in a subterranean formation having one or more lost circulation zones comprising placing a wellbore servicing fluid comprising a sealing composition into the wellbore, wherein the sealing composition comprises a latex and an accelerator and wherein the latex, the accelerator or both are encapsulated with an encapsulation material. A wellbore servicing fluid comprising a latex and an accelerator wherein the latex, the accelerator, or both are encapsulated. | 04-28-2016 |
| 20160115365 | Methods for Maintaining Zonal Isolation in a Subterranean Well - A cement for use in wells in which hydrogen sulfide is present, comprises polymer particles. In the event of cement-matrix failure, or bonding failure between the cement/casing interface or the cement/borehole-wall interface, the polymer particles swell when contacted by hydrogen sulfide. The swelling seals voids in the cement matrix, or along the bonding interfaces, thereby restoring zonal isolation. | 04-28-2016 |
| 20160122616 | Compositions and Methods for Servicing Subterranean Wells - Fluids containing surfactants and hydrophobic particles are effective media for cleaning non-aqueous fluids (NAFs) out of a subterranean wellbore. The fibers and surfactants are preferably added to a drilling fluid, a spacer fluid, a chemical wash, a cement slurry or combinations thereof. NAFs, such as an oil-base mud or a water-in-oil emulsion mud, are attracted to the fibers as the treatment fluid circulates in the wellbore. | 05-05-2016 |
| 20160122620 | Compositions and Methods for Servicing Subterranean Wells - Fluids containing surfactants and hydrophobic particles are effective media for cleaning non-aqueous fluids (NAFs) out of a subterranean wellbore. The fibers and surfactants are may be added to a drilling fluid, a spacer fluid, a sacrificial spacer fluid, a chemical wash, a cement slurry or combinations thereof. NAFs, such as an oil-base mud or a water-in-oil emulsion mud, are attracted to the fibers as the treatment fluid circulates in the wellbore. | 05-05-2016 |
| 20160160109 | Novel Cement Composition for Lost Circulation Application - A method of cementing a subterranean formation includes providing a cement composition comprising cementitious material, aqueous base fluid, nanoparticles, synthetic clay, and a thixotropic modifier, where the solid materials are about 0 wt % to about 40 wt % of the total weight of the cement composition; introducing the cement composition into a subterranean formation; and allowing the cement composition to set in the subterranean formation. Cement compositions include cementitious material, aqueous base fluid, nanoparticles, synthetic clay, and a thixotropic modifier. | 06-09-2016 |
| 20160177663 | NANOCLAY AS AN ADDITIVE FOR HIGH PRESSURE & HIGH TEMPERATURE WELL CEMENTING | 06-23-2016 |
| 20160200959 | Wellbore Cement Compositions and Wellbore Cementing Methods | 07-14-2016 |
| 20180022981 | MATERIALS AND METHODS OF USE AS ADDITIVES FOR OILWELL CEMENTING | 01-25-2018 |
| 20190144734 | METHODS FOR CEMENTING THERMAL WELLS | 05-16-2019 |
| 20220136365 | CEMENT COMPOSITIONS AND METHODS - Cement slurries are prepared that comprise water, a hydraulic cement and particles of an oil-absorbent material. The particles are present in an amount sufficient to alter a property of a non-aqueous drilling fluid. The cement slurry is placed in a subterranean well, whereupon the slurry contacts residual drilling fluid on casing and formation surfaces. The oil-absorbent material in the cement slurry may reduce the mobility of the drilling fluid, thereby improving zonal isolation. | 05-05-2022 |
