Entries |
Document | Title | Date |
20080217012 | Gelled emulsions and methods of using the same - Gelled emulsions contain (i.) an external phase of an aqueous water-soluble solvent solution, polymeric viscosifying agent and, optionally, an oxidative and/or acidic breaker; and (ii.) an internal phase of a dispersed organic fluid. The aqueous water-soluble solvent solution constitutes between from about 15 to about 50 volume percent of the gelled emulsion and the dispersed organic fluid is presented in the gelled emulsion in amounts ranging from about 50 to about 85 volume percent. The gelled emulsions are useful in a variety of applications including, but not limited to, oil field, pipeline and processing facility applications. | 09-11-2008 |
20080217013 | TUNABLE SURFACTANTS FOR OIL RECOVERY APPLICATIONS - The systems and methods described herein provide for modified lignins and other compositions that may be useful as surfactants. These compositions have particular utility for energy-related applications. In embodiments, they may be useful for enhanced oil recovery. In embodiments, they may be useful for extracting bitumen from oil sands. In embodiments, they may be useful for environmental remediation. | 09-11-2008 |
20080223578 | Polyelectrolyte Complexes as Delayed Gelling Agents for Oil and Gas Applications - A polyelectrolyte complex for the controlled or delayed gelation of a water and hydrocarbon producing subterranean formation. | 09-18-2008 |
20080289827 | Viscosified fluids for remediating subterranean damage - Of the many methods and compositions provided herein, one method includes a method comprising introducing a viscosified remedial fluid comprising a base fluid, a viscosifying agent, and an oxidizer into at least a portion of a subterranean formation having damage present therein so as to contact the damage with the viscosified remedial fluid; and allowing the viscosified remedial fluid to at least partially remediate the damage present in the subterranean formation. Another method provided herein includes introducing a viscosified remedial fluid comprising a base fluid, a first viscosifying agent, and an oxidizer into at least a portion of a subterranean formation before a treatment fluid comprising a second viscosifying agent is introduced therein, wherein the oxidizer is available to remediate damage in the subterranean formation. | 11-27-2008 |
20080296022 | Method for Treating Subterranean Formation - A method is provided for treating a subterranean formation penetrated by a well bore comprising the steps of:
| 12-04-2008 |
20090014179 | In Situ Conversion Of Heavy Hydrocarbons To Catalytic Gas - A method of producing natural gas from a heavy hydrocarbon-containing subterranean formation includes: placing a catalyst having at least one transition metal into the formation, injecting an anoxic stimulation gas into the formation, and collecting the natural gas generated in the formation. The method may be performed outside the context of a subterranean formation under controlled conditions. Thus, a method of producing natural gas from bitumen includes: providing an anoxic mixture of heavy hydrocarbons and a catalyst having at least one transition metal, adding an anoxic stimulation gas to the mixture, and heating the mixture in the presence of the stimulation gas. | 01-15-2009 |
20090126932 | REVERSIBLE POLYMERIC GELATION FOR OILFIELD APPLICATIONS - This invention relates to the synthesis and use in oilfield applications of copolymers which can undergo the Diels-Alder reaction to form a gel. Under appropriate conditions, the retro Diels-Alder reaction can take place to provide for decreasing the viscosity of the aforementioned gel. | 05-21-2009 |
20090159287 | IN-SITU FORMATION OF SOLIDS FOR WELL COMPLETIONS AND ZONAL ISOLATION - A sol of metallic alkoxide is pumped into a desired location in a wellbore and allowed to gel, creating solids in-situ. The sol is either unstabilized, requiring rapid placement before gelling, or the sol is stabilized, permitting off-site mixing. Sols can be stabilized with either surfactant or with interfacial polymers. Large concentrations of surfactant can be placed in the sol to create templates around which gelation occurs, creating porous solids. | 06-25-2009 |
20090159288 | Chemically enhanced thermal recovery of heavy oil - Described herein are methods for removing heavy oils from underground reservoirs. The methods involve the use of chemical compositions in combination with steam techniques for the efficient removal of heavy oils. | 06-25-2009 |
20090183877 | Mesophase Fluids with Extended Chain Surfactants for Downhole Treatments - Mesophase fluids may be pre-formed or formed in situ and may be used downhole for various treatments including, but not limited to, cleaning up and removing non-polar materials from reservoir production zones, removing wellbore damage, releasing stuck pipe, components in spacers and pills and the like in oil and gas wells. These treatments involve solubilization of the non-polar material into the emulsion when the treatment fluid contacts non-polar materials. These mesophase fluids use extended chain surfactants having propoxylated/ethoxylated spacer arms. The extended chain surfactants are intramolecular mixtures containing hydrophilic and lipophilic portions. They attain high solubilization in the mesophase fluids (e.g. single phase microemulsions), are in some instances insensitive to temperature and are useful for a wide variety of oil types. | 07-23-2009 |
20090255677 | Micro-Crosslinked Gels and Associated Methods - Provided are methods that include a method comprising: providing a micro-crosslinked gel that comprises micro-domains; and placing the micro-crosslinked gel into a subterranean formation via a well bore penetrating the formation at a desired pressure. In another aspect, the invention provides compositions that include a micro-crosslinked gel comprising a jigsaw configuration of micro-domains and particulates. | 10-15-2009 |
20090277638 | Methods of pumping fluids having different concentrations of particulate at different average bulk fluid velocities to reduce pump wear and maintenance in the forming and delivering of a treatment fluid into a wellbore - The inventions are for methods of forming and delivering a treatment fluid into a wellbore. In one aspect, methods are provided of pumping a first fluid having a relatively high concentration of a particulate suspended therein and pumping a second fluid having either none of the particulate or a relatively low concentration of the particulate suspended therein, and then merging at least the first and second fluids to form a treatment fluid having a merged concentration of the particulate. According to this aspect, the first and second fluids are pumped at different average bulk fluid velocities through different pumping chambers of fluid pumps. This helps reduce wear on the pumps. | 11-12-2009 |
20090301722 | SYSTEM, METHOD, AND APPARATUS FOR INJECTION WELL CLEAN-UP OPERATIONS - A method for removing drilling damage from a formation in a wellbore that has not been produced includes injecting a chemical-acting cleanup fluid and contacting it with a filtercake on a face of a formation of interest for a period of time sufficient to loosen some of the solids embedded in the filtercake. The method further includes circulating a solids removal fluid at a high rate through the wellbore across the face of the formation of interest, the solids removal fluid including a viscosifier, and positioning a second treatment fluid having a fluid loss control pill in the wellbore at the formation of interest. The method further includes degrading particles of the fluid loss control pill and degrading remaining bridging agent from the drilling fluid. | 12-10-2009 |
20100012323 | BEAD PACK BRAZING WITH ENERGETICS - A method of making porous shapes from unit structures such as beads involves coating the beads with two or more layers of material deposited such that it forms an energetic material. These bi-layer energetic materials are formed from a variety of materials including, but not limited to: Ti & B, Zr & B, Hf & B, Ti & C, Zr & C, Hf & C, Ti & Si, Zr & Si, Nb & Si, Ni & Al, Zr & Al, or Pd & Al, all of which can be deposited from vapor. Pressure is applied to prevent the components from moving and the solid-state reaction between the alternating layers produces exothermic heat. Heat from the reaction alone or in conjunction of an applied brazing compound joins the beads forming a porous shape that is desired. The reaction in the materials may be activated with a small pulse of local energy that can be applied using optical, electrical, or thermal sources. Common examples include an electrical pulse, spark, hot filament, a laser beam, etc. The method reduces energy consumption and the need for specialized equipment. The reactive materials and optional brazing material are preferably applied in a fluidized CVD furnace. | 01-21-2010 |
20100038086 | Conformance Control Through Stimulus-Responsive Materials - A method, apparatus and production well system that utilize stimulus-responsive materials for “conformance control” and profile control along the fluid flow path in a well as part of a gravel pack or a coating on a well tool. The stimulus-responsive materials are also known as intelligent or smart polymers and are typically polymeric materials that reversibly or irreversibly swell or collapse in the presence of stimulus such as changes in concentration of a fluid media in contact with the stimulus-responsive material, pH or polarity of the media the stimulus-responsive material is in contact with, salinity, current; or temperature. The stimulus-responsive materials may swell upon contact with a rust stimulus and shrink or collapse upon contact with a second stimulus or vice-versa The changes between production and injection profiles may be automatic with the application of the stimulus-responsive materials and may occur without user intervention. | 02-18-2010 |
20100126726 | ALKALINE BETA-MANNANASE CONTAINING COMPOSITIONS USEFUL FOR THE HYDROLYSIS OF GUAR IN HIGH pH ENVIRONMENTS AND METHODS RELATED THERETO - Methods and compositions of fracturing formations are provided. The fracturing fluid includes an enzyme breaker that decreases the viscosity of the fracturing fluid over time. The enzyme breaker can be used in environments having a pH value ranging from about 7 to about 12. | 05-27-2010 |
20100132948 | Delayed Breaking of Well Treatment Fluids - An embodiment of a downhole method of breaking of a well treatment fluid relates to overcrosslinking a polymeric thickener with an overcrosslinking agent such as an excess crosslinking agent and/or an excess alkaline material, wherein either or both the agent and/or material may be encapsulated. | 06-03-2010 |
20100175880 | Method of Using Crosslinkable Brine Containing Compositions - A method of enhancing the productivity of a subterranean formation penetrated by a gas, oil or geothermal well consists of introducing into the formation and/or well a pumpable polymerizable fluid comprising a crosslinkable, mono functional alkene, multi-functional alkene (such as a difunctional alkene), a heat inducible free radical initiator and brine. The fluid may be used in the thermal insulation of production tubing or transfer pipes and hydraulic fracturing. | 07-15-2010 |
20100186957 | FLUID PRESSURE TRANSMISSION PILL - A pill for wellbore operations, that includes a base fluid; and at least two polymers that interact to form a gelatinous structure characterized as isolating and controllably transmitting hydrostatic pressure between a first wellbore fluid above the pill in a wellbore and a second wellbore fluid below the pill in the wellbore is disclosed. | 07-29-2010 |
20100206567 | Gel Capsules for Solids Entrainment - The present invention is a method for treating a subterranean wellbore. More specifically, the invention is a method for removing wellbore solids. A first, polymer containing fluid is placed in the solids bed. A second, viscosifying fluid is then placed into the solids bed thereby agitating the solids in the bed and causing the formation of a gel capsules when mixed with the biopolymer fluid. These gel capsules are capable of trapping or entraining the agitated solids. The gel capsules typically have a relatively high volume and a relatively low density, thereby making their removal from the wellbore easier. | 08-19-2010 |
20100252266 | Organic Acid Treating Fluids With Viscoelastic Surfactants and Internal Breakers - An aqueous fluid system that contains an aqueous dicarboxylic acid solution, a viscoelastic surfactant as a gelling agent to increase the viscosity of the fluid, and an internal breaker such as mineral oil and/or fish oil to controllably break the viscosity of the fluid provides a self-diverting acid treatment of subterranean formations. The internal breaker may be at least one mineral oil, a polyalphaolefin oil, a saturated fatty acid, and/or is an unsaturated fatty acid. The VES gelling agent does not yield viscosity until the organic acid starts to spend. Full viscosity yield of the VES gelling agent typically occurs at about 6.0 pH. The internal breaker allows the VES gelling agent to fully viscosify the spent organic acid at 6.0 pH and higher, but as the spent-acid VES gelled fluid reaching reservoir temperature, controllable break of the VES fluid viscosity over time can be achieved. | 10-07-2010 |
20100258313 | INVERT SILICATE FLUIDS FOR WELLBORE STRENGTHENING - A wellbore fluid that includes an oleaginous continuous phase; a non-oleaginous discontinuous phase comprising a water-soluble silicate therein; and an emulsifier to stabilize the non-oleaginous phase dispersed in the oleaginous phase is disclosed. A setting agent, including organic or inorganic setting agent may optionally be included to trigger gelation or precipitation of the silicate downhole. | 10-14-2010 |
20100270017 | DELAYED BREAKER - A process that includes pumping a first wellbore fluid comprising an oxidative degradable polymer into a wellbore through a subterranean formation; pumping a second wellbore fluid comprising a pH-activated oxidative breaker into the wellbore; pumping a third wellbore fluid comprising a delayed acid source into the wellbore; and allowing the delayed acid source to acidify at least a portion of the wellbore to a pH of less than 7 so as to activate the pH-activated oxidative breaker at the lower pH and degrade the oxidative degradable polymers is disclosed. | 10-28-2010 |
20100314113 | Dual-Functional Breaker for Hybrid Fluids of Viscoelastic Surfactant and Polymer - Incorporating water-based polymer breakers, such as oxidizers, enzymes and/or acids, into a mixture of an oil and oil-soluble surfactants creates an emulsion that can then perform as a dual-functional breaker for reducing the viscosity of hybrid fluids gelled with both a viscoelastic surfactant (VES) and a polymer. The outer phase of the dual-functional breaker emulsion is oil, e.g. a mineral oil, containing an oil-soluble surfactant that will, over time and with heat, break the VES portion of the gel. As it does so, the polymer breaker in the internal aqueous phase will be released to then break the polymer portion of the gel. The polymer breaker will not start to break the polymer gel before the oil-soluble surfactant starts to break the VES gel. The overall breaking using the emulsion is slower as compared to introducing the polymer breaker and the oil-soluble surfactant in a non-emulsified form. | 12-16-2010 |
20100319920 | METHODS FOR IMPROVING THE PRODUCTIVITY OF OIL PRODUCING WELLS - Methods for treating formations bearing brine and at least one of black oil or volatile oil using a composition containing a nonionic polymer and solvent. The solvent at least one of solubilizes or displaces at least one of brine or oil in the formation. Methods for making a composition for treating a formation bearing brine an at least one of black oil or volatile oil are also disclosed. | 12-23-2010 |
20100326660 | USE OF DIRECT EPOXY EMULSIONS FOR WELLBORE STABILIZATION - A direct emulsion wellbore fluid, including: a continuous non-oleaginous phase; a discontinuous oleaginous phase; a stabilizing agent; an oil-miscible epoxy-based resin; and a hardening agent; wherein the wellbore fluid is a stable emulsion having a viscosity greater than 200 cps. In some embodiments, the hardening agent is an oil-miscible hardening agent; in other embodiments, the hardening agent is an oil-immiscible hardening agent. | 12-30-2010 |
20110005756 | USE OF ZETA POTENTIAL MODIFIERS TO DECREASE THE RESIDUAL OIL SATURATION - Compositions and methods for their use are disclosed, where the compositions comprise an amine component, an amine/phosphate ester component and optionally a solvent component. The compositions are adapted to coat solid materials, substrates and/or surfaces of producing of reservoirs and formations and methods for making and using same, where the coating agents modify surface properties of the solid materials, substrates and/or surfaces of producing formations decreasing residual oil saturation. | 01-13-2011 |
20110048716 | Treatment Fluids Comprising Transient Polymer Networks - The invention relates to compositions and methods relating to treatment fluids that comprise transient polymer networks in subterranean applications. In one aspect, the invention provides a method comprising: providing a treatment fluid comprising an aqueous base fluid and a transient polymer network, and placing the treatment fluid in a subterranean formation. In another aspect, the invention provides a subterranean treatment fluid comprising: an aqueous-base fluid and a transient polymer network. | 03-03-2011 |
20110088902 | DIVERTING AGENTS FOR WATER SHUT OFF - A method of retarding the flow of water in a subterranean formation that includes injecting a gelling pill into the formation, the gelling pill comprising: brine; a crosslinkable polymer; and a crosslinkant; and allowing the crosslinkable polymer to crosslink to form a gel in the subterranean formation is disclosed. A water absorbing polymer is optionally included. | 04-21-2011 |
20110100628 | METHODS OF DELAYING THE CURING OF MOISTURE SENSITIVE CURABLE ELASTOMERS - A method of treating a formation that includes injecting gelling components curable by a moisture cure into a selected region of the formation; and controlling the onset of curing of the gelling components by contacting the gelling components with a drying agent is disclosed. | 05-05-2011 |
20110132609 | FORMATION FLUID SAMPLING TOOLS AND METHODS UTILIZING CHEMICAL HEATING - A formation fluid sampling tool is provided with reactants which are carried downhole and which are combined in order to generate heat energy which is applied to the formation adjacent the borehole. By applying heat energy to the formation, the formation fluids are heated, thereby increasing mobility, and fluid sampling is expedited. | 06-09-2011 |
20110168393 | Methods of Using Fluid Loss Additives Comprising Micro Gels - Methods and fluids are provided that include, but are not limited to, a drilling fluid comprising an aqueous base fluid and a fluid loss control additive that comprises at least one polymeric micro gel and a method comprising: providing an aqueous based treatment fluid comprising a fluid loss control additive that comprises at least one polymeric micro gel; placing the aqueous based treatment fluid in a subterranean formation via a well bore penetrating the subterranean formation; allowing the fluid loss control additive to become incorporated into a filter cake located on a surface within the subterranean formation; allowing the filter cake to be degraded; and producing hydrocarbons from the formation. Additional methods are also provided. | 07-14-2011 |
20110203797 | GAS EVOLVING OIL VISCOSITY DIMINISHING COMPOSITIONS FOR STIMULATING THE PRODUCTIVE LAYER OF AN OIL RESERVOIR - The invention is directed to a chemical system of gas evolving oil viscosity diminishing compositions (GEOVDC) for stimulating the productive layer of an oil reservoir, that is to chemical compositions for a thermochemical treatment of an oil reservoir, more specifically for initiating a chemical reaction in the productive layer zone of the oil reservoir to produce heat and evolve gases so that the extraction of oil (petroleum) is improved. The invention is further directed to a method of thermochemically treating an oil reservoir by means of this chemical system, and to an apparatus for performing thermochemical treatment of an oil reservoir. | 08-25-2011 |
20110232907 | LAMINAR PHASE RING FOR FLUID TRANSPORT APPLICATIONS - Methods for creating and using multi-phase fluid flows are disclosed. In one embodiment, such a method includes introducing an inner fluid into a tubular conduit. The method further includes introducing a ring fluid into the tubular conduit. In this embodiment, the ring fluid is disposed annularly between the inner fluid and the interior of the tubular conduit, and the flow of the ring fluid is laminar. | 09-29-2011 |
20110278008 | WELL TREATMENT FLUID COMPOSITIONS AND METHODS OF USE THAT INCLUDE A DELAYED RELEASE PERCARBONATE FORMULATION - A well treatment fluid and method of use includes water, at least one hydratable polymer, an optional crosslinking agent, and a delayed release percarbonate formulation effective to reduce initial viscosity of the fluid after a period of time. Also disclosed are processes for fracturing a subterranean formation. | 11-17-2011 |
20110290488 | Creation of a Hydrate Barrier During In Situ Hydrocarbon Recovery - Certain viscous oil reservoirs are too deep to be commercially mined but lack an adequate top seal to employ in situ recovery methods such as SAGD. Without an adequate top seal, gases from the reservoir can rise into overlying aquifers and potentially to the surface. While ice-like hydrates would not normally form above the oil reservoir during in situ recovery, an additive can be added to promote hydrate formation. In this way, a hydrate barrier can be formed to act as a top seal to contain these gases. | 12-01-2011 |
20110290489 | METHOD AND COMPOSITION - A method of controlling ingress of water into a production well used to extract fluid hydrocarbons the method comprising the steps of: introducing a composition comprising a polymer, a polar solvent, a cross-linking agent and a base oil into the production well; recovering hydrocarbons from the production well; wherein the polymer comprises an alcohol moiety. The density of the composition is preferably between 0.92 to 1.00 g/cm | 12-01-2011 |
20110303411 | SWELLABLE/DEGRADABLE "SAND" PLUG SYSTEM FOR HORIZONTAL WELLS - This invention relates to a swellable and degradable sand plug system used in horizontal wellbores and the use of the system in treating horizontal wellbores. The slurry composition comprises a carrier fluid and a granular borate source material, where the borate source material is at least partially dehydrated or anhydrous. The carrier fluid may be a non-aqueous fluid, or when the average size of the granular borate source material is sufficient large, the carrier fluid may also be an aqueous fluid. The slurry composition is allowed to settle in the horizontal wellbore and at least partially fill at least a portion of the horizontal wellbore in a direction vertical to the substantially horizontal wellbore, and is exposed to a sufficient amount of aqueous fluid to expand to the point to substantially fill at least a portion of the horizontal wellbore in a direction vertical to the horizontal wellbore, thereby plugging the substantially horizontal wellbore. The slurry composition may be further exposed to a sufficient amount of aqueous liquid to at least partially dissolve the expanded slurry composition, thereby at least partially removing the plug from the substantially horizontal wellbore. | 12-15-2011 |
20110303412 | OIL-BASED GROUTING COMPOSITION WITH AN INSULATING MATERIAL - According to an embodiment, a method for thermally insulating a portion of a tubular located inside an enclosed conduit comprises the steps of: (A) introducing a grouting composition into an annulus between the tubular and the enclosed conduit, the grouting composition comprising: (i) an oil-swellable binding material; and (ii) a hydrocarbon liquid, wherein the hydrocarbon liquid is the continuous phase of the grouting composition; and (iii) an insulating material comprising a hollow microsphere; and (B) allowing or causing the grouting composition to set after the step of introducing, wherein after setting the grouting composition has a thermal conductivity of less than 0.3 BTU/hr·ft·° F. According to another embodiment, a grouting composition for use in insulating a portion of a tubular located inside an enclosed conduit comprises: (A) an oil-swellable binding material comprising a organophilic clay; and (B) a hydrocarbon liquid, wherein the hydrocarbon liquid is the continuous phase of the grouting composition; and (C) an insulating material comprising a hollow microsphere, wherein after the grouting composition has set, the grouting composition has a thermal conductivity of less than 0.3 BTU/hr·ft·° F. | 12-15-2011 |
20110315383 | GELATION ACCELERATION - The invention provides a method made of steps of injecting into a wellbore, a composition comprising a solvent, a crosslinkable polymer, a crosslinking agent capable of crosslinking the polymer or forming a polymer, and a gelling accelerator selected from the group consisting of carbon dioxide, polylactic acid, encapsulated acid and latent acid; and allowing viscosity of the composition to increase and form a gel more quickly with the gelling accelerator than without. | 12-29-2011 |
20120037368 | CONTROLLED RELEASE PROPPANT - Materials are delivered into oil well reservoirs. Highly sensitive, mechanical, biological and chemical agents can be delivered to subterranean formations with rigid, impermeable capsules. A variety of treatments may be delivered to a subterranean formation. | 02-16-2012 |
20120067579 | PROCESS FOR ENHANCED OIL RECOVERY USING THE ASP TECHNIQUE - The present invention relates to a process for the enhanced recovery of oil in a deposit owing to the introduction, into the deposit, of an alkaline aqueous solution of a water-soluble polymer containing a surfactant, characterized in that the aqueous solution of water-soluble polymer introduced is prepared with an aqueous solution initially containing Ca | 03-22-2012 |
20120138303 | Methods of Providing Fluid Loss Control or Diversion - Methods of controlling fluid loss, providing fluid diversion, or plugging a portion of a well bore using a treatment fluid including relatively insoluble borate material particulates that are placed into a subterranean formation to provide the desired action and then degrade over time in the subterranean formation in the presence of an aqueous fluid such as water. | 06-07-2012 |
20120152544 | COLD WEATHER COMPATIBLE CROSSLINKER SOLUTION - Disclosed herein is a well treatment fluid comprising an aqueous solution comprising greater than or equal to about 1 wt % boron, at least 5 wt % of a co-solvent, and greater than or equal to about 5 wt % sodium hydroxide, potassium hydroxide, or a combination thereof, wherein the co-solvent comprises glycerol, ethylene glycol, propylene glycol, or a combination thereof. Methods of using the well treatment fluid are also disclosed. | 06-21-2012 |
20120181027 | Viscosified Fluids for Remediating Subterranean Damage - Method comprising introducing a first remedial fluid into a first portion of a subterranean formation, wherein the first remedial fluid comprises a base fluid and a viscosifying agent, and allowing the first remedial fluid to divert at least a portion of a second remedial fluid that comprises an oxidizer to a second portion of the subterranean formation. Wherein the viscosifying agent comprises at least one viscosifying agent selected from the group consisting of a gelling agent, an emulsifier, or a gas in combination with a foaming agent. Also wherein the polymeric gelling agent, if present, comprises at least one polymer selected from the group consisting of xanthan, diutans, wellans, succinoglycan, clarified biopolymers, scleroglycan, combinations thereof, and derivatives thereof. | 07-19-2012 |
20120234543 | Organic Acid Compositions and Methods of Use in Subterranean Operations - Methods comprising providing a treatment fluid that comprises using an aqueous base fluid, a synthetic cationic gelling agent, a plurality of particulates, and an organic acid. The treatment fluid is then introduced into at least a portion of a subterranean formation having a temperature of above about 275° F. wherein the particulates are deposited into the subterranean and the treatment fluid form at least one void in the subterranean formation itself. The viscosity of the treatment fluid in the subterranean formation is greater than about 20 cP for at least 20 minutes at temperatures higher than about 275° F. | 09-20-2012 |
20120234544 | DEGRADABLE GELS IN ZONAL ISOLATION APPLICATIONS - A method of treating a formation that includes emplacing an oxidizing breaker fluid into a region of the formation occupied by a gel; and allowing sufficient time for the oxidizing breaker fluid to degrade the gel is disclosed. | 09-20-2012 |
20120247772 | Method for Isolating and Completing Multi-Zone Gravel Packs - A gel barrier may be created within an annulus in a one-step operation by combining two or more solutions within the annulus. The two solutions may include a first solution, such as a silicate solution, and a second solution that may be an aqueous hardener solution. Once the two solutions are combined and subsequently reacted together, the forming of a gel barrier may occur between a plurality of zones along the annulus. The gel barrier may then prevent a fluid from traveling between adjacent zones of the wellbore annulus. | 10-04-2012 |
20120267109 | METHOD OF TREATING A FRACTURED WELL - This invention relates to a method of treating a tight gas well that has been fractured with a gel solution to increase the production of hydrocarbons. The gel solutions used for fracturing typically include an aqueous portion and a polymer material. Generally, the first step of the method is to apply a soak solution to the fractured formation to mix with the aqueous portion of the gel solution to increase the volatility of the aqueous portion. The next step is to apply a dry gas treatment to the tight gas well to remove the aqueous portion of the gel solution after the volatility has been increased. | 10-25-2012 |
20120279711 | Environmentally Friendly Low Temperature Breaker Systems and Related Methods - An embodiment of the present invention includes a method comprising: (a) providing a filter cake on a surface in a subterranean formation, the filter cake comprising a polymer and a bridging agent; (b) providing a filter cake clean-up fluid that comprises an aqueous fluid and L-glutamic acid N,N-diacetic acid; and (c) contacting the filter cake with the filter cake clean-up fluid so that a portion of the subterranean formation neighboring the filter cake has a regain permeability of at least about 86%. | 11-08-2012 |
20120285685 | Method of Using Asparaginase as a Polyacrylamide Enzyme Breaker - Asparaginase, such as asparaginase derived from | 11-15-2012 |
20120318510 | METHODS OF GENERATING MAGNETIC PARTICLES IN A SUBTERRANEAN ENVIRONMENT - The subject disclosure relates to methods of generating magnetic particles in a wellbore. More particularly, the subject disclosure relates to a fluid system which comprises two or more fluids which react chemically to generate magnetic particles in a wellbore. | 12-20-2012 |
20130112413 | Controlled Release Breaker Composition for Oil Field Applications - The present invention relates to encapsulated breakers and the use of encapsulated breakers for breaking viscosified treatment fluids. One embodiment of the present invention provides a method of providing a viscosified treatment fluid having a first viscosity having a gelling agent, a crosslinking agent, a proppant, an aqueous-base fluid, and an encapsulated breaker composition having an encapsulant that has a poly(meth)acrylate blend; introducing the viscosified treatment fluid in the subterranean formation; creating or enhancing a fracture in a subterranean formation; and allowing the encapsulated breaker composition to release the breaker so as to reduce the viscosity of the viscosified treatment fluid to a second viscosity. | 05-09-2013 |
20130112414 | Engineered Methods and Materials for Wellbore Strengthening in Subterranean Operations - A method of wellbore strengthening may include providing a wellbore strengthening fluid comprising a drilling fluid, a particulate, and a fiber; introducing the wellbore strengthening fluid into a wellbore penetrating a subterranean formation; and forming a plug comprising the particulate and the fiber in a void near the wellbore, the plug being capable of maintaining integrity at about 1000 psi or greater overbalance pressure. | 05-09-2013 |
20130126169 | Tight Gas Stimulation by In-Situ Nitrogen Generation - Provided is a method and composition for the in-situ generation of synthetic sweet spots in tight-gas formations. The composition can include nitrogen generating compounds, which upon activation, react to generate heat and nitrogen gas. The method of using the composition includes injecting the composition into a tight-gas formation such that upon activation, heat and nitrogen gas are generated. Upon the generation of nitrogen gas and heat within the formation, microfractures are produced within the formation and the hydrostatic pressure within the reservoir is reduced to less than the reservoir fluid pressure, such that the rate of production of hydrocarbons from the formation is increased. | 05-23-2013 |
20130146288 | Method and apparatus to increase recovery of hydrocarbons - Methods for enhancing the extraction of fluids from subterranean formation through wells using hydrogen produced in-situ. Certain embodiments produce hydrogen in-situ through reactions of a hydride. In one embodiment, at least a portion of the produced hydrogen is retained in the well bore for a sufficient amount of time to allow hydrogen to migrate into the subterranean formation. In certain embodiments, in absorbing the hydrogen, the subterranean formation desorbs and releases certain organic material for production through a well bore. In other embodiments, the subterranean formation is placed under pressure to drive the hydrogen further into the formation and into the molecular structure of the formations and substances contained therein. When pressure is released, the hydrogen creates additional fractures or cracks in the formation through explosive compression, thereby increasing permeability of the formation. | 06-13-2013 |
20130146289 | TWO-STAGE FILTER CAKE REMOVAL COMPOSITION FOR DRILLING FLUIDS AND METHOD OF USE THEREOF - Disclosed is a two-stage filter cake removal composition, and method of use thereof, for use in a wellbore for controlled removal of a filter cake present in a target production zone. The two-stage filter cake removal composition may include an enzyme present in an amount of between about 1% and 20%, and a mixture of hydrochloric acid and an organic acid present in amounts of between about 0.1% and 5% and about 0.1% and 10%, respectively, by weight. The two-stage filter cake removal composition, when the enzyme is applied to the filter cake in the target production zone in a first stage and the mixture of the hydrochloric acid and the organic acid is applied to the filter cake in the target production zone in a second stage, is operable to remove the filter cake in the target production zone over an extended reaction time. | 06-13-2013 |
20130153225 | Compositions and Methods for Treatment of Well Bore Tar - Of the many compositions and methods provided herein, one method includes contacting tar resident in a well bore with a tar stabilizer comprising an acrylonitrile-butadiene copolymer; and allowing the tar stabilizer to interact with the tar to at least partially reduce the tendency of the tar to adhere to a surface. | 06-20-2013 |
20130153226 | Method for Delayedly Crosslinking Environmentally Friendly Fluids - The present invention relates to environmentally friendly delayed crosslinking complexes that are useful in subterranean treatment fluids. One embodiment of the present invention provides a method of providing a treatment fluid having a first viscosity and includes: an aqueous base fluid, a viscosifying agent, a delayed crosslinking complex having: a metal and a ligand, the ligand having at least one hydroxyl group and at least one carboxylic acid group; and placing the treatment fluid in a subterranean formation. In some embodiments, the delayed crosslinking complex is compliant and/or the viscosifying agent is compliant. | 06-20-2013 |
20130161008 | PREPARATION AND USE OF NANO-CATALYSTS FOR IN-SITU REACTION WITH KEROGEN - Disclosed herein are methods for extracting a kerogen-based product from subsurface shale formations. The methods utilize in-situ reaction of kerogen involving liquid phase chemistry at ambient temperatures at pressures for the subsurface shale formation. These methods rely on chemically modifying the shale-bound kerogen to render it mobile using metal particulate catalysts. In the methods disclosed herein a fluid comprising metal is provided to the subsurface shale formation comprising kerogen in an inorganic matrix. A reducing agent is provided to the subsurface shale formation. The kerogen is converted by contacting the kerogen with a metal particulate catalyst formed from the metal; and a mobile kerogen-based product is formed. At least a portion of the mobile kerogen-based product is recovered. The kerogen-derived product can be upgraded to provide commercial products. | 06-27-2013 |
20130206413 | Gas evolving oil viscosity diminishing compositions for stimulating the productive layer of an oil reservoir - The invention is directed to a chemical system of gas evolving oil viscosity diminishing compositions (GEOVDC) for stimulating the productive layer of an oil reservoir, that is to chemical compositions for a thermochemical treatment of an oil reservoir, more specifically for initiating a chemical reaction in the productive layer zone of the oil reservoir to produce heat and evolve gases so that the extraction of oil (petroleum) is improved. The invention is further directed to a method of thermochemically treating an oil reservoir by means of this chemical system, and to an apparatus for performing thermochemical treatment of an oil reservoir. | 08-15-2013 |
20130220616 | In Situ Heat Generation - Introducing a fluid composition and a heat-generating fluid into a wellbore may improve timing and/or conditions of generating in situ heat downhole. The generated heat may be used to melt wax, and dissolve paraffins and asphaltenes or other deposits within the wellbore or in the reservoir itself. The fluid composition may include a base fluid and a metallic powder having a plurality of metallic powder particles. The base fluid may be or include a drilling fluid, a completion fluid, a stimulation fluid, a workover fluid, an activation fluid, and mixtures thereof. Each metallic powder particle may have a metallic particle core, and a coating disposed on the metallic particle core having a coating material. The metallic particle core may be released from the metallic powder particle. A heat-generating fluid may contact the released metallic particle core and thereby generate heat. | 08-29-2013 |
20130228334 | METHOD AND COMPOSITION TO REDUCE GEL VISCOSITY IN THE INTERMEDIATE TEMPERATURE RANGE - Methods for reducing a viscosity of a viscosified fluid include reacting, such as by depolymerizing and/or decomposing, a polymeric material of the viscosified fluid with a breaking agent including one or more organic peroxide breakers having a structural feature selected from a cyclic peroxide segment and/or multiple linear peroxide moieties per molecule. The methods of treating the subterranean are provided that include reacting, such as by depolymerizing and/or decomposing, a polymeric material of a viscosified treatment fluid with one or more organic peroxide breakers having a structural feature selected from cyclic peroxide segment and/or multiple linear peroxide moieties per molecule to facilitate breaking of the viscosified treatment fluid after the fracturing or treatment is finished. | 09-05-2013 |
20130240208 | DOWNHOLE DRIVE FORCE GENERATING TOOL - An apparatus and method for generating a drive force in a downhole environment includes chambers of a reactant and a catalyst, respectively, that are maintained separate until selectively exposed to one another. Once exposed, the reactant and catalyst produce expanding fluid pressure and sometimes heat. The products of the reaction are directed to a drive member to carry out a desired operation in the downhole environment. | 09-19-2013 |
20130264057 | Wellbore Servicing Fluid System and Methods of Use - A wellbore servicing method comprising circulating an invert emulsion fluid through a wellbore to form a filter cake within the wellbore, wherein the invert emulsion fluid comprises an oleaginous fluid, a non-oleaginous fluid, and an acid-sensitive surfactant, contacting at least a portion of the filter cake with an emulsion reversing fluid, wherein the emulsion reversing fluid comprises an acid precursor, wherein the acid precursor is not an acid, and wherein the acid precursor is configured to generate a quantity of acid after a predetermined delay period beginning at placement within a wellbore, allowing the emulsion reversing fluid to remain in contact with the filter cake for a soak period, and removing the filter cake from the wellbore. | 10-10-2013 |
20130269941 | Treatment Fluids Comprising a Hydroxypyridinecarboxylic Acid and Methods for Use Thereof - Treatment fluids can mitigate the occurrence or effects of precipitation in a subterranean formation through complexation of a metal ion therein. Methods for treating a subterranean formation can comprise: providing a treatment fluid comprising a hydroxypyridinecarboxylic acid, a salt thereof, or a tautomer thereof; introducing the treatment fluid into a subterranean formation; and complexing a metal ion in the subterranean formation with the hydroxypyridinecarboxylic acid. | 10-17-2013 |
20130269942 | METHOD AND SYSTEM FOR SEALING A VOID IN AN UNDERGROUND WELLBORE | 10-17-2013 |
20130277054 | Gellable Treatment Fluids Having Adjustable Gel Times and Methods Associated Therewith - Gellable treatment fluids may have their gel times modified by using a polymer mixture therein that contains two or more polymers having disparate average molecular weights. Methods for treating a subterranean formation using such gellable treatment fluids can comprise providing a gellable treatment fluid comprising a polymer mixture and a crosslinking agent, introducing the gellable treatment fluid into a subterranean formation, and allowing the gellable treatment fluid to form a gel in the subterranean formation. The polymer mixture comprises a base polymer and an addend polymer, where the base polymer and the addend polymer each comprise an acrylamide monomer unit or a derivative thereof and have different average molecular weights, such that a molecular weight distribution of the polymer mixture contains at least two local maxima. | 10-24-2013 |
20130292121 | SURFACTANT FORMULATIONS FOR FOAM FLOODING - A foam generating surfactant formulation includes a betaine, an alpha-olefin sulfonate and a nanofluid. The betaine is preferably a cocamidopropyl betaine or laurel betaine. The alpha-olefin sulfonate is preferably an anionic surfactant having between 8 and 18 carbon atoms per molecule. The nanofluid is preferably an oil-in-water nanofluid that includes an emulsifying surfactant, a solvent, a co-solvent and water. The addition of the nanofluid increases the thermal stability and salt resistance of the foam generating surfactant. | 11-07-2013 |
20130312969 | USE OF HEXOSE OXIDASES TO CREATE HYDROGEN PEROXIDE IN AQUEOUS WELL TREATMENT FLUIDS - A hydrocarbon-bearing subterranean formation may be treated with an aqueous well treatment fluid which contains a hexose oxidase, such as glucose oxidase, mannose oxidase or galactose oxidase. The aqueous well treatment fluid further may contain a viscosifying polymer and an aldohexose. The aldohexose reacts in-situ with the hexose oxidase and molecular oxygen to produce hydrogen peroxide. The hydrogen peroxide may then act as a breaker. | 11-28-2013 |
20140000896 | Fracturing Fluids and Methods For Treating Hydrocarbon-Bearing Formations | 01-02-2014 |
20140000897 | Fracturing Fluids and Methods For Treating Hydrocarbon-Bearing Formations | 01-02-2014 |
20140060840 | ALTERING A COMPOSITION AT A LOCATION ACCESSED THROUGH AN ELONGATE CONDUIT - A composition flowing along an elongate conduit to a location accessed by that conduit contains a precursor substance which, arriving at the location, is converted electrochemically to chemically reactive intermediate. This intermediate reacts with another constituent of the composition, thereby bringing about a change in the composition. The reactive intermediate may be a cross-linking agent for a polymeric constituent of the composition so that the electrochemical reaction and subsequent cross-linking increases the viscosity of the composition as it arrives at the location where it is required. | 03-06-2014 |
20140076565 | Thermally-Activated, High Temperature Particulate Suspending Agents and Methods Relating Thereto - A particulate suspending agent may be useful for mitigating particulate settling in wellbore applications with high-temperature and/or at near-neutral and higher pH values. Methods of treating a wellbore may include providing a treatment fluid comprising an aqueous liquid, a plurality of particulates, and a particulate suspending agent, wherein the particulate suspending agent comprises a crosslinked polymer particulate formed by a reaction comprising a first monofunctional monomer and an orthoester crosslinker, the orthoester crosslinker comprising an orthoester linkage and at least two crosslinking moieties; and placing the treatment fluid in a wellbore penetrating a subterranean formation. | 03-20-2014 |
20140083703 | Triggerable Lost Circulation Material and Method of Use - Methods for preventing or alleviating the loss of drilling fluids and other well treatment fluids into a subterranean formation during drilling or construction of boreholes therein include a drilling fluid including a lost circulation material. The lost circulation material includes a suspension of swelled particles of a pH sensitive polymeric material, the swelled particles capable of reversibly attaching to other swelled particles of the polymeric material. The pH of the aqueous solution is such that each particle of the swelled pH sensitive polymeric material is not attached to other swelled particles, and wherein upon lowering the pH of the suspension, the swelled particles attach to each other. | 03-27-2014 |
20140110117 | MODIFIED NONIONIC SURFACTANT FORMULATIONS FOR ENHANCED OIL RECOVERY - Embodiments of the present disclosure include modified nonionic surfactant formulations having a nonionic surfactant and a pour point depressant, where the modified nonionic surfactant formulations have a pour point of −3° C. to −54° C. In one or more embodiments, the modified nonionic surfactant formulations can be introduced into a flow of carbon dioxide, where the flow of carbon dioxide and the modified nonionic surfactant formulation are injected into an oil containing reservoir. In one or more embodiments, an emulsion of the carbon dioxide and the nonionic surfactant form in the oil containing reservoir, where the use of the pour point depressant provides minimal interference in forming the emulsion. | 04-24-2014 |
20140116703 | Wellbore Servicing Methods and Compositions Comprising Degradable Polymers - A method of servicing a wellbore comprising providing a degradable polymer within a portion of a wellbore, a subterranean formation or both; preparing a wellbore servicing fluid comprising a degradation accelerator wherein the degradation accelerator comprises an alkanolamine, an oligomer of aziridine, a polymer of azridine, a diamine, or combinations thereof; and placing the wellbore servicing fluid comprising a degradation accelerator into the wellbore, the subterranean formation or both wherein the degradation accelerator contacts the degradable polymer. | 05-01-2014 |
20140116704 | Wellbore Servicing Methods and Compositions Comprising Degradable Polymers - A method of servicing a wellbore comprising providing a degradable polymer and a delayed action construct within a portion of a wellbore, a subterranean formation or both; wherein the delayed action construct comprises (i) a degradation accelerator comprising an alkanolamine, an oligomer of aziridine, a polymer of azridine, a diamine, or combinations thereof, (ii) a solid support, and (iii) an encapsulating material; and placing the wellbore servicing fluid comprising the degradable polymer and delayed action construct into the wellbore, the subterranean formation or both. | 05-01-2014 |
20140131043 | SWELLABLE POLYMER WITH ANIONIC SITES - The invention is directed to stable crosslinked water-soluble swellable polymers and methods for making same. More particularly, the invention relates to a composition comprising expandable polymeric particles having anionic sites and labile crosslinkers and stable crosslinkers, said particle mixed with a fluid and a cationic crosslinker that is capable of further crosslinking the particle on degradation of the labile crosslinker and exposure of the anionic sites so as to form a gel. A particularly important use is as an injection fluid in petroleum production, where the expandable polymeric particles are injected into target zone and when the heat and/or suitable pH of the target zone cause degradation of the labile crosslinker and the particle expands, the cationic crosslinker crosslinks the polymer to form a gel, thus diverting water to lower permeability regions and improving oil recovery. | 05-15-2014 |
20140138092 | WELLBORE SERVICING METHODS AND COMPOSITIONS COMPRISING DEGRADABLE POLYMERS - Methods of servicing a wellbore comprising: providing a degradable polymer within a portion of a wellbore and/or a subterranean formation; providing a wellbore servicing fluid comprising a particulate salt degradation accelerator and a neutralizer activator, wherein the particulate salt degradation accelerator is formed by reacting a degradation accelerator solution selected from the group consisting of an alkanolamine; an oligomer of aziridine; a polymer of aziridine; a diamine; and any combination thereof, with an acid, and wherein the neutralizer activator is capable of dissociating the acid by neutralization from the particulate salt degradation accelerator so as to form a neutralized degradation accelerator; introducing the wellbore servicing fluid into a wellbore and/or a subterranean formation; contacting the degradable polymer with the neutralized degradation accelerator; and degrading the degradable polymer. | 05-22-2014 |
20140144637 | USE OF ELASTOMERS TO PRODUCE GELS FOR TREATING A WELLBORE - A method of treating an earthen formation that includes introducing a first amount of a first blocked isocyanate in a liquid phase into the earthen formation; introducing a second amount of a second blocked isocyanate in a liquid phase into the earthen formation; the second blocked isocyanate group having a lower unblocking temperature than the first blocked isocyanate group; introducing at least one active hydrogen compound into the earthen formation; and contacting the first and second blocked isocyanates and the active hydrogen compound to form an elastomeric gel. The combination of two blocked isocyanates provides a synergistic effect so that the curing time can be optimised in a manner unexpected from the properties of the individual blocked isocyanates. | 05-29-2014 |
20140144638 | Methods for Controlling Unconsolidated Particulates in a Subterranean Formation - Methods of treating a wellbore in a subterranean formation comprising unconsolidated particulates including providing a treatment fluid comprising a furan-based resin and a stimuli-delayed acid generator; wherein the stimuli-delayed acid generator generates acid upon encountering a wellbore stimulus and wherein at least a portion of the stimuli-delayed acid generator is a liquid; introducing the treatment fluid into the wellbore in the subterranean formation; and stimulating the stimuli-delayed acid generator so as to generate acid and at least partially cure the furan-based resin; wherein the at least partial curing of the furan-based resin at least partially consolidates the unconsolidated particulates. | 05-29-2014 |
20140144639 | METHODS FOR HINDERING THE SETTLING OF PARTICULATES IN A SUBTERRANEAN FORMATION - Embodiments herein include a method comprising proving a treatment fluid comprising an activator and providing gas-forming particulates comprising coating particulates with a binding agent, wherein the binding agent holds a gas-generating chemical onto the particulates. The gas-forming particulates are suspended in the treatment fluid and the treatment fluid comprising the gas-forming particulates is introduced into a subterranean formation. The gas-generating chemical and the activator then react to generate gas-formed particulates. | 05-29-2014 |
20140158358 | Methods and Systems of Down-Hole Reagent Processing and Deployment - A reagent processing vessel is disclosed comprising: an outer container; a reaction chamber disposed in the outer container; a mixing chamber disposed in the outer container for allowing transfer of a substance between the reaction chamber and the mixing chamber; a delivery chamber disposed in the outer container for allowing transfer of a substance between the mixing chamber and the delivery chamber; and at least one of a mixing motor and a delivery pump. | 06-12-2014 |
20140166286 | Methods of Enhancing the Conductivity of Propped Fractures with In-Situ Acidizing - Methods of treating subterranean formations comprising providing a wellbore in a subterranean formation having at least one fracture therein; providing a first treatment fluid comprising a base fluid and an acid generating inert agent; providing a second treatment fluid comprising a base fluid, and an acid generating activator; introducing the first treatment fluid into the at least one fracture; and introducing the second treatment fluid into the at least one fracture, wherein the acid generating inert agent in the first treatment fluid reacts with the acid generating activator in the second treatment fluid so as to generate an acid in the at least one fracture and create or enhance at least one microfracture therein. | 06-19-2014 |
20140174742 | Well Treatment with Complexed Metal Crosslinkers - Disclosed are compositions and methods for treating subterranean formations, in particular, oilfield stimulation compositions and methods using polymer viscosified fluid crosslinked with metal complexes with amino and/or phosphonic acids to provide an increased crosslinking temperature and a low pH sensitivity. The metal complexes can be used with borate crosslinkers to provide continuous viscosification as the temperature is increased. | 06-26-2014 |
20140174743 | Well Treatment with Complexed Metal Crosslinkers - Disclosed are compositions and methods for treating subterranean formations, in particular, oilfield stimulation compositions and methods using polymer viscosified fluid crosslinked with metal complexes with amino and/or phosphonic acids to provide an increased crosslinking temperature and a low pH sensitivity. The metal complexes can be used with borate crosslinkers to provide continuous viscosification as the temperature is increased. | 06-26-2014 |
20140196902 | METHOD, SYSTEM, AND COMPOSITION FOR PRODUCING OIL - A method, system, and composition for producing oil from a formation utilizing an oil recovery formulation comprising a surfactant, an ammonia liquid, an alkali metal carbonate or bicarbonate, a polymer, and water are provided. | 07-17-2014 |
20140196903 | Method For Removing Contaminants From Wastewater In Hydraulic Fracturing Process - The method begins drilling a borehole from the surface to an underground shale matrix. A pipe is inserted into the borehole. Openings are created in the pipe in fluid communication with fractures in the shale matrix. The interior surface of at least one section of pipe is coated with a contaminant-capturing substance. Fracturing fluid including water, proppants and various chemicals is pumped through the pipe and into the fractures in the shale matrix. The fluid re-enters the pipe from the shale matrix and moves toward the surface through the coated pipe section where contaminants are sequestered by the coating. Natural gas or oil from the fractured shale then enters the pipe and moves to the surface to be collected. The coated pipe section remains in the ground permanently such that the necessity of disposing of the captured contaminants is eliminated. | 07-17-2014 |
20140209309 | Wellbore Servicing Fluids and Methods of Making and Using Same - A method of servicing a wellbore within a subterranean formation comprising providing a first wellbore tubular positioned within a second wellbore tubular creating a tubular flowpath and an annular flowpath, wherein the tubular flowpath and the annular flowpath converge in a mixing zone within the wellbore, placing an annular fluid through the annular flowpath, placing a tubular fluid through the tubular flowpath, and contacting the annular fluid and the tubular fluid in the mixing zone to form a composite fluid, wherein the composite fluid comprises a base fluid component, a proppant component, a crosslinkable polymer component, a crosslinking agent component, and an optional buffering agent component and wherein the components of the composite fluid are apportioned between the annular fluid and the tubular fluid such that reaction of the components to form the composite fluid is inhibited until the components of the composite fluid mix within the mixing zone. | 07-31-2014 |
20140238679 | TRANSPORT OF HEAVY OIL - Provided herein are, inter alia, heavy crude oil emulsion compositions and methods of making the same. The compositions and methods provided herein are particularly useful for the transport of heavy crude oils. | 08-28-2014 |
20140262274 | OXIDATIVE BREAKERS IN A SILICONE BASED SUSPENSION - An oxidative breaker system for use in reducing the viscosity of a guar-based suspension includes a silicone oil carrier fluid, an oxidizer and a suspension aid. The suspension aid is preferably fumed silica. The oxidizer may be selected from the group consisting of alkali metal peroxide, transition metal peroxide, persulfate, bromide and bromate. In highly preferred embodiments, the oxidizer is magnesium peroxide or calcium peroxide. Also disclosed is a method for breaking a guar-based suspension with the inventive oxidative breaker system. | 09-18-2014 |
20140262275 | ALKALI POLYMER SURFACTANT SANDWICH - Aspects of the invention relate to methods for enhancing the amount of oil recovered from subterranean reservoirs or reducing the amount of surfactant needed. The method includes injecting a first alkali-polymer slug through a wellbore into a reservoir, followed by injecting a alkali-polymer-surfactant slug through the wellbore into the reservoir, and then injecting a second alkali-polymer slug through the wellbore into the reservoir. | 09-18-2014 |
20140262276 | VISCOSITY ENHANCEMENT OF POLYSACCHARIDE FLUIDS - A method of treating a subterranean formation includes providing a treatment composition comprising at least one hydroxyl carboxylic acid, a crosslinkable component and a crosslinking agent. The treatment composition is then introduced to the subterranean formation, such that the combination of the hydroxyl carboxylic acid, a crosslinkable component and a crosslinking agent in the treatment composition increases the viscosity of the well treatment composition. | 09-18-2014 |
20140290951 | FILTERCAKE REMOVAL USING EXOTHERMIC IN-SITU NITROGEN-PRODUCING REACTANTS - Removal of filtercake particles from a wellbore is achieved by injecting two (2) water-soluble nitrogen-containing salts and an organic acid resulting in the generation of nitrogen gas and elevated temperature. | 10-02-2014 |
20140318788 | VISCOSIFIED BREAKER FLUID COMPOSITIONS FOR EXTENDED DELAY IN FILTERCAKE REMOVAL AT HIGH TEMPERATURE - The present invention relates to a method of treating a subterranean formation. The present invention also relates to a method of delivering an acid to a subterranean formation. The methods include obtaining or providing a composition that includes filter cake breaker, viscosifier, corrosion inhibitor, and pH buffering agent. The methods also include contacting the composition with a subterranean material downhole. The present invention also relates to a composition for the treatment of a subterranean formation. The composition includes: filter cake breaker, viscosifier, corrosion inhibitor, pH buffering agent, and at least one of drilling fluid, stimulation fluid, fracturing fluid, spotting fluid, clean-up fluid, production fluid, completion fluid, remedial treatment fluid, abandonment fluid, pill, acidizing fluid, cementing fluid, and packer fluid. | 10-30-2014 |
20140338911 | METHODS AND COMPOSITIONS FOR USE IN OIL AND/OR GAS WELLS - Methods and compositions comprising an emulsion or a microemulsion for use in various aspects of the life cycle of an oil and/or gas well are provided. In some embodiments, the emulsion or the microemulsion comprises water, a solvent, and a surfactant, and optionally, one or more additives. | 11-20-2014 |
20140352965 | METHOD AND APPARATUS FOR DOWNHOLE APPLICATION OF TREATMENT CHEMICALS IN GAS WELLS - Improved methods are provided for the application of downhole oil or gas well treating agents, such as liquid corrosion inhibition agents. The methods involve first lowering a liquid retainer device into a well casing, preferably at or above the location of the well production zone, followed by introduction of a liquid treating agent. The presence of the liquid retainer device prevents substantial passage of the agent into the production zone, and forms a column of the liquid agent above the device. The retainer device is then withdrawn from the well so as to create a substantially uniform film of the agent along the inner surfaces of the well casing. In this manner, proper coating of the casing is achieved while preventing production losses owing to passage of the treating agent into the production zone. The liquid retainer is preferably one or more swab cups or oil field retainers. | 12-04-2014 |
20150013983 | SOLID-SUPPORTED CROSSLINKER FOR TREATMENT OF A SUBTERRANEAN FORMATION - The present invention relates to solid-supported crosslinkers for treatment of a subterranean formation. In various embodiments, the present invention provides a method of treating a subterranean formation. The method can include obtaining or providing a composition that includes a solid-supported crosslinker. The solid-supported crosslinker includes a supporting solid, and a crosslinker supported on the supporting solid. The method can also include contacting a subterranean material downhole with the composition. | 01-15-2015 |
20150013984 | FLUID VISCOSITY CONTROL - A method of treating a subterranean formation penetrated by a wellbore includes introducing a treatment fluid comprised at least a crosslinkable component, and a metal crosslinker to the subterranean formation, forming a crosslinked treatment fluid, and de-crosslinking bonds of the crosslinked treatment fluid by manipulating a pH of the treatment fluid with a pH triggering agent, wherein the pH triggering agent is an amine-precursor compound or a derivative thereof. | 01-15-2015 |
20150027710 | POLY(ALKYENYLAMIDE)-POLYSACCHARIDE HYDROGELS FOR TREATMENT OF SUBTERRANEAN FORMATIONS - The present invention provides compositions including poly(alkenylamide)-polysaccharide hydrogels for treating a subterranean formation and methods of using the same. In various embodiments, the present invention provides a method of treating a subterranean formation, including obtaining or providing a composition including a poly(alkenylamide)-polysaccharide hydrogel. The method also includes placing the composition in a subterranean formation. In some embodiments, the poly(alkenylamide)-polysaccharide hydrogel is a polyacrylamide-alginate hydrogel. | 01-29-2015 |
20150034318 | AQUEOUS SOLUTION AND METHOD FOR USE THEREOF - A method of treating a formation includes preparing an aqueous solution having HCl in an amount between greater than 15% and 45.7% by weight, inclusive. The prepared aqueous solution includes a fixing agent (FA) present in a molar ratio of FA:HCl between 0.15 and 2.5 inclusive, where the FA is urea and/or a urea derivative, and further includes water present in an amount sufficient to dissolve the HCl and the FA. The aqueous solution includes substantially no polysaccharides. | 02-05-2015 |
20150034319 | H2S SCAVENGERS WITH SYNERGISTIC CORROSION INHIBITION - Triazine hydrogen sulfide (H | 02-05-2015 |
20150034320 | SYSTEM AND METHOD FOR EXTRACTING PETROLEUM AND GENERATING ELECTRICITY USING NATURAL GAS OR LOCAL PETROLEUM - One embodiment is a method for extracting oil from a near-depleted oil well. A portable natural gas, methane, or petroleum reformer is brought to a site of the oil well. A quantity of natural gas, methane, or a portion of the locally produced petroleum and a quantity of water is fed into the reformer. The natural gas, methane, or petroleum is reacted with the water in the reformer to generate a driver gas containing a mixture of hydrogen gas and carbon dioxide gas. The driver gas is compressed to a pressure appropriate for the oil well, the driver gas is injected into the oil well, and the oil is recovered from the near-depleted oil well. In one embodiment, sulfur is first removed from the natural gas or crude petroleum. Another embodiment is a method for generating electricity without greenhouse gas emissions. The driver gas is separated into a substantially hydrogen stream and a substantially carbon dioxide stream prior to injecting the driver gas into the oil well, and the hydrogen stream is used to generate electricity. | 02-05-2015 |
20150041136 | Method for the in-situ generation chlorine dioxide - The invention relates to the in-situ generation of chlorine dioxide for the treatment of hydrocarbon processing systems. The composition comprises a source of chlorite, a source of persulfate and water. Under the specified conditions of temperature and/or halide catalyst, chlorine dioxide is generated at an increased rate, thereby effectively treating down-hole hydrocarbon recovery systems. | 02-12-2015 |
20150068749 | Method, Apparatus and Composition for Increased Recovery of Hydrocarbons by Paraffin and Asphaltene Control from Reaction of Fuels and Selective Oxidizers in the Subterranean Environment - A method, apparatus and composition are described for safe energy delivery down hole resulting in increased recovery of subterranean hydrocarbons. The method utilizes, for example, the reaction of non-alkane fuels and selective oxidizers which are non-selective toward alkane chemical compounds. The method further utilizes an acid solution reaction with aforementioned reaction for elimination of any insoluble products of reaction permitting flow within formation strata. The energy released in the subterranean reaction is utilized to heat the production tubing, the wellbore, the formation or the formation hydrocarbons thereby lowering fluid viscosity and permitting greater flow especially for heavy oils, asphaltene deposits and/or paraffin deposits. Further, safe delivery of oxidizers can be accomplished without limit on depth as the selective oxidizer may be delivered to point of use down hole as most all formations of interest contain primarily alkane hydrocarbons and will not react with the non-alkane selective oxidizer. | 03-12-2015 |
20150136397 | METHOD AND COMPOSITION FOR ENHANCED OIL RECOVERY BASED ON SUPERCRITICAL CARBON DIOXIDE AND A NONIONIC SURFACTANT - Embodiments of the present disclosure are directed towards oil recovery compositions. As an example, an oil recovery composition can include a dimeric non-ionic surfactant and carbon dioxide. | 05-21-2015 |
20150144343 | METHODS OF OBTAINING A HYDROCARBON MATERIAL CONTAINED WITHIN A SUBTERRANEAN FORMATION, AND RELATED STABILIZED EMULSIONS - A method of obtaining a hydrocarbon material from a subterranean formation comprises forming a flooding suspension comprising degradable particles and a carrier fluid. The flooding suspension is introduced into a subterranean formation containing a hydrocarbon material to form an emulsion stabilized by the degradable particles and remove the emulsion from the subterranean formation. At least a portion of the degradable particles are degraded to destabilize the emulsion. An additional method of obtaining a hydrocarbon material from a subterranean formation, and a stabilized emulsion are also described. | 05-28-2015 |
20150292312 | METHOD FOR PRODUCING SYNTHETIC GAS BY USING SOLID ACID - The present disclosure relates to a method for producing a synthesis gas using a solid acid, more particularly to a method for producing a synthesis gas using a solid acid capable of remarkably decreasing production of environmental pollutants such as carbon dioxide, which includes producing hydrogen by reacting a solid acid with water and producing a synthesis gas by reacting the produced hydrogen with a carbon compound. | 10-15-2015 |
20150300140 | ACID DIVERSION TREATMENTS IN INJECTION WELLS USING PERMEABILITY MODIFIERS - Some embodiments herein comprise providing a treatment fluid comprising an aqueous base fluid, an acid, a permeability modifier, and a permeability modifier deactivator; providing an injection well having a first treatment zone comprising a first aqueous formation permeability, wherein the first treatment zone comprises formation damage; introducing the treatment fluid into the injection well, so as to contact the acid, the permeability modifier, and the permeability modifier deactivator with the first treatment zone; reacting the acid with the first treatment zone so as to repair a portion of the formation damage; reacting the permeability modifier with the first treatment zone so as to cause the first aqueous formation permeability to adopt a second, lesser aqueous formation permeability; and contacting the permeability modifier deactivator with the permeability modifier so as to deactivate the permeability modifier and restore the first treatment zone to about the first aqueous formation permeability. | 10-22-2015 |
20150315885 | METHODS AND SYSTEMS FOR GENERATING REACTIVE FLUORIDE SPECIES FROM A GASEOUS PRECURSOR IN A SUBTERRANEAN FORMATION FOR STIMULATION THEREOF - In situ generation of hydrogen fluoride or other reactive fluoride species can sometimes be beneficial during an acidizing operation, particularly when it is desired to limit the presence of a carrier fluid that may be present. Methods for acidizing a subterranean formation can comprise: providing a treatment fluid comprising a non-HF fluoride compound, the non-HF fluoride compound being a gas at standard temperature and pressure and that is free of boron; introducing the treatment fluid into a subterranean formation; transforming the non-HF fluoride compound into a reactive fluoride species; and etching a surface in the subterranean formation with the reactive fluoride species, the surface comprising a siliceous material. | 11-05-2015 |
20150315891 | DISPERSION SOLUTION FOR DRILLING AND METHOD OF EXTRACTION USING THE DISPERSION SOLUTION - A dispersion solution for drilling obtained by dispersing, in an aqueous medium, a polyoxalate as the hydrolysable resin material. The dispersion solution for drilling comprises an aqueous medium in which is dispersed the hydrolysable resin material that exhibits a high hydrolysable capability at a temperature of as low as 80° C. or lower and, specifically, 60° C. or lower. The dispersion solution for drilling is used for the well drilling method such as hydraulic fracturing method, rotary drilling method or riserless drilling method. | 11-05-2015 |
20150330197 | USE OF AN ACID SOLUBLE OR DEGRADABLE SOLID PARTICULATE AND AN ACID LIBERATING OR ACID GENERATING COMPOSITE IN THE STIMULATION OF A SUBTERRANEAN FORMATION - The flow of a stimulation fluid may be diverted from a high permeability zone to a low permeability portion of a subterranean formation by use of an acid soluble or acid degradable solid particulate and a composite of an acid or an acid generating compound adsorbed onto a water-insoluble adsorbent. Conductive flow of hydrocarbons from an occluded fracture may be resumed by release of the acid from the adsorbent or the acid generating compound. | 11-19-2015 |
20150337195 | SURFACE ACTIVE ADDITIVES FOR OIL-BASED MUD FILTER CAKE BREAKERS - Described is a method including emplacing a breaker fluid into a wellbore drilled with an oil-based drilling fluid that forms an oil-based filter cake. The breaker fluid includes a non-oleaginous base fluid and a surfactant blend comprising an alkyl polyglycoside, an ethoxylated alcohol, and a triethyleneglycol monobutyl ether. The method further includes allowing the breaker fluid to break the oil-based filter cake. | 11-26-2015 |
20150337638 | HYDROCARBON STIMULATION BY ENERGETIC CHEMISTRY - Disclosed are methods and compositions for stimulating a hydrocarbon formation by generating heat and/or pressure in the formation, in either a fracturing or matrix treatment. This invention utilizes reactive fluids which comprise energetic chemistry that reacts in the formation to create heat and/or pressure. The heat may reduce the viscosity and increase the mobility of heavy oil, and/or the pressure may initiate or extend fractures in the hydrocarbon bearing formation. The reactive fluid may be buffered to slow the reaction and include an encapsulated activator to accelerate the reaction after suitable delay or when the fluid is placed in a zone of interest. Reactive fluids may be sequentially used, wherein each reactive fluid is successively less energetic than the preceding reactive fluid. | 11-26-2015 |
20150353812 | Dimer Acid Grafted Polymer For Stabilizing Particulate In A Well - A fluid is provided including: (A) an aqueous phase; and (B) a dimer acid grafted polymer, wherein the dimer acid grafted polymer is at least sparingly soluble in water, wherein the polymer is dispersed, hydrated, or dissolved in the aqueous phase. The fluid can be used, for example, in a method of treating a well, including: (A) forming a fluid comprising a dimer acid grafted polymer, and (B) introducing the fluid into a treatment zone of a well. | 12-10-2015 |
20150361328 | System and Methods to Deliver Energy Downhole - A method is provided to deliver energy downhole with a heat and nitrogen generating reaction, wherein the heat and nitrogen generating reaction occurs in-situ with an acid-generating reaction. The heat and nitrogen generating reaction is initiated by injecting into a reservoir a) nitrogen gas-generating reactants which react to generate heat at a pH of less than 8.0; b) an acid precursor which is capable of hydrolyzing in-situ in the reservoir to generate a sufficient amount of acid to maintain the reactants at a pH of less than 8.0, for a reaction that generates at least 20 kcal of heat per mole of reactants. | 12-17-2015 |
20150368551 | ENCAPSULATION OF AN ACID PRECURSOR FOR OIL FIELD APPLICATIONS - The present application provides for an acid precursor capsule that includes an acid precursor that is a non-aqueous ester and a polymerized shell that encapsulates the acid precursor. In some embodiments, the acid precursor converts into an associated acid during a hydrolysis period while in contact with water at an elevated temperature. In further embodiments, the associated acid is soluble in water and forms an aqueous acid solution with water. In certain embodiments, the polymerized shell contains the acid precursor and prevents interaction between the acid precursor and water at the elevated temperature until the polymerized shell dissolves in the water during a dissolution period. An acid precursor capsule suspension can include the acid precursor capsule and a suspension fluid. In some embodiments, a method of treatment using acid precursor capsules is provided that includes the step of introducing an acid precursor capsule suspension into a well bore such that the acid precursor capsules contact water at an elevated temperature. | 12-24-2015 |
20160009977 | DELAYED ENHANCEMENT OR BREAKING OF VISCOSITY FOR VISCOELASTIC SURFACTANT CONTAINING WELLBORE FLUIDS | 01-14-2016 |
20160009980 | SHAPED COMPRESSED PELLETS FOR SLOW RELEASE OF WELL TREATMENT AGENTS INTO A WELL AND METHODS OF USING THE SAME | 01-14-2016 |
20160010441 | PROCESS FOR PRODUCING NATURAL GAS AND NATURAL GAS CONDENSATE FROM UNDERGROUND GAS CONDENSATE DEPOSITS AND FREE-FLOWING COMPOSITIONS (FC ) FOR USE IN THIS PROCESS | 01-14-2016 |
20160024371 | RESIN COMPOSITION FOR TREATMENT OF A SUBTERRANEAN FORMATION - The present invention relates to resin compositions for treatment of a subterranean formation. In various embodiments, the present invention provides a method of treating a subterranean formation. The method can include obtaining or providing a resin composition that includes a hardenable composition including a hardenable resin. The resin composition also can include a hardening composition including a water control hardening agent. The method can include contacting a subterranean material downhole with the resin composition, and reacting the hardenable composition and the hardening composition, to give a hardened resin composition. In some embodiments, the resin composition provides both particulate consolidation and water control. | 01-28-2016 |
20160024890 | METHODS AND COMPOSITIONS RELATED TO GELLED LAYERS IN OIL AND/OR GAS WELLS - Methods and compositions for the prevention of the formation, breakdown, and/or removal of gelled layers in an oil and/or gas well are provided. In some embodiments, the compositions and methods comprise a concentrate, as described in more detail herein, where the concentrate comprises two or more surfactants. In certain embodiments, the compositions and methods comprise an emulsion or a microemulsion. The emulsion or microemulsion may include a surfactant, optionally a solvent, and optionally a freezing point depression agent or other components. | 01-28-2016 |
20160024891 | METHODS AND COMPOSITIONS RELATED TO GELLED LAYERS IN OIL AND/OR GAS WELLS - Methods and compositions for the prevention of the formation, breakdown, and/or removal of gelled layers in an oil and/or gas well are provided. In some embodiments, the compositions and methods comprise a concentrate, as described in more detail herein, where the concentrate comprises two or more surfactants. In certain embodiments, the compositions and methods comprise an emulsion or a microemulsion. The emulsion or microemulsion may include a surfactant, optionally a solvent, and optionally a freezing point depression agent or other components. | 01-28-2016 |
20160032174 | METHODS FOR ALTERING FLUID RHEOLOGY - A method includes placing a treatment fluid including a crosslinked gel in a wellbore penetrating a subterranean formation, the crosslinked gel including a gelling agent and a borate crosslinking agent, de-crosslinking a portion of the crosslinked gel, the de-crosslinking induced by a sufficient change in operating pressure, the de-crosslinking providing a release of active sites on the borate crosslinking agent and reducing the viscosity of the treatment fluid, and providing a borate-affinity agent to capture the released active sites on the borate crosslinking agent. A fracturing fluid includes a gelling agent, a borate crosslinking agent, a latent borate-affinity agent, and a proppant. | 02-04-2016 |
20160032700 | COMPOSITIONS AND METHODS FOR TREATING SUBTERRANEAN FORMATIONS - Methods for treating subterranean wells in which the producing formation is a carbonate comprise preparing a treatment fluid comprising either: (a) an aqueous solution of a multivalent-cation reacting polymer; (b) a solution comprising a fatty acid and an ethanolamine; (c) an aqueous acidic solution of one or more compounds whose calcium salts are insoluble; or (d) an aqueous solution comprising urea or alkane derivatives thereof or both and polyvinylpyrrolidone (PVP). The treatment fluid is placed in the well such that the solution contacts the carbonate formation at a pressure higher than or equal to the fracturing pressure. The treatment fluid is allowed to react with the carbonate formation, thereby depositing a film onto the formation surface or parts of the formation surface. Then an acid solution is placed in the well such that the acid contacts the carbonate formation at a pressure higher than or equal to the fracturing pressure. | 02-04-2016 |
20160040059 | Subterranean Reservoir Treatment Method - A method is given for heterogeneous proppant placement in fracturing by in situ aggregation of fine mesh proppant particulates or other materials such as fibers in a subterranean fracture. A polymer is injected into a subterranean formation and is subsequently subjected to a chemical reaction, for example hydrolysis, under downhole conditions, which leads to formation of either a cationic or an anionic polyelectrolyte. Alternatively, the polyelectrolyte is synthesized downhole by, for example, a Hofmann degradation or a Mannich reaction. The polyelectrolyte acts as a flocculant and provides aggregation of solid particulates such as sand, mica, silica flour, ceramics and the like, which leads to formation of proppant micropillars deep in the fracture. Methods of aggregation of fibers to enhance bridging, and other applications of controlled flocculation are also given. | 02-11-2016 |
20160047211 | HYDROGEN PEROXIDE STEAM GENERATOR FOR OILFIELD APPLICATIONS - Exemplary apparatuses, systems, and methods are provided to produce steam for use in oil field applications. In some embodiments, a catalyst is provided that includes a plurality of ceramic bodies impregnated with an alkaline-promoted manganese oxide. In other embodiments, the catalyst includes a plurality of bodies formed of an active ceramic oxide in a consolidated state without an underlying ceramic body. The bodies are contacted with a liquid hydrogen peroxide having a strength, in one embodiment, between about 30 and about 70 weight percent to produce steam. The steam is directed to an oil field application, such as, but not limited to, a geologic formation to increase oil production from the geologic formation, an applicator to clean oilfield equipment, a heat exchanger to heat hydrogen peroxide, or a heat exchanger to heat living quarters. | 02-18-2016 |
20160060504 | METHOD AND MATERIALS FOR HYDRAULIC FRACTURING WITH DELAYED CROSSLINKING OF GELLING AGENTS - A non-aqueous slurry contains a non-aqueous liquid immiscible in water (such as a hydrocarbon based oil) having dispersed therein a crosslinking agent (such as a borate crosslinking agent) and an oil-wetting surface active material. The non-aqueous slurry further contains an organophilic clay. The non-aqueous slurry, when used in an aqueous fracturing fluid, provides crosslinking delay between the crosslinking agent and a hydratable polymer, such as guar or guar derivatives. The aqueous fracturing fluid provides an enhanced fracture network after being pumped into a well. | 03-03-2016 |
20160060985 | Methods for Servicing Subterranean Wells - Pumpable process-fluid compositions comprise polyacrylamide, a non-metallic crosslinker and a pH-adjustment material. Such compositions have utility in the context of controlling lost circulation in subterranean wells. Upon entering at least one lost circulation zone, the compositions crosslink, thereby forming a barrier that minimizes or stops fluid flow from the wellbore into the lost circulation zone. | 03-03-2016 |
20160068736 | REVERSIBLE FOAMED WELLBORE FLUIDS - Compositions may include reversible foam fluids for wellbore and other applications, and methods of using the reversible foamed fluid may include contacting a foamed fluid with a foam deactivator to dissolve the foam and produce a defoamed fluid; contacting the defoamed fluid with a foam reactivator; and generating a foamable fluid. | 03-10-2016 |
20160084053 | Flowable Composition For The Thermal Treatment Of Cavities - A free-flowing composition (FC) comprises:
| 03-24-2016 |
20160096988 | Methods for Servicing Subterranean Wells - Pumpable process-fluid compositions comprise polyacrylamide, a non-metallic crosslinker and a pH-adjustment material. Such compositions have utility in the context of controlling lost circulation in subterranean wells. Upon entering at least one lost circulation zone, the compositions crosslink, thereby forming a barrier that minimizes or stops fluid flow from the wellbore into the lost circulation zone. | 04-07-2016 |
20160108307 | Methods for Etching Fractures and Microfractures in Shale Formations - A method of treating a subterranean formation includes providing a treatment fluid comprising particles of at least one of a hydrolysable in-situ acid generator and a hydrolysable in-situ chelating agent generator. The treatment fluid is combined with a carrier fluid and is introduced into a subterranean formation. The particles are placed in fractures or microfractures where, upon the hydrolyzing of the acid or chelating agent generator, etching of the faces of the fractures or microfractures occurs. | 04-21-2016 |
20160115377 | FLUID VISCOSITY CONTROL - A method of treating a subterranean formation penetrated by a wellbore includes introducing a treatment fluid comprised at least a crosslinkable component, and a metal crosslinker to the subterranean formation; forming a crosslinked treatment fluid, and de-crosslinking bonds of the crosslinked treatment fluid by manipulating a pH of the treatment fluid with a pH triggering agent. | 04-28-2016 |
20160137906 | DELAYED GELATION OF POLYMERS - The disclosure is directed to methods and compositions delaying the gelation of polymers in water flooding by sequentially or co-injecting a carboxylate-containing polymer solution, a gel-delaying polymer, and gelation agent into a hydrocarbon reservoir. Delays of weeks are observed. | 05-19-2016 |
20160138376 | Flowing Fracturing Fluids to Subterranean Zones - Implementations provide flowing of fracturing fluids to subterranean zones. Actions can include In some examples, a method includes actions of flowing a mixture of a first quantity of acid and a second quantity of a polymer diverting agent (PDA) having a viscosity that changes with acid concentration to a first portion of a subterranean zone, wherein the first quantity decreases as the acid reacts with metal in the first portion, and wherein the viscosity of the PDA increases as the first quantity decreases to form a PDA gel and flowing a third quantity of acid through the subterranean zone, wherein the PDA gel diverts the acid from the first portion to a second portion of the subterranean zone. | 05-19-2016 |
20160145482 | COMPOSITIONS FOR TREATING SUBTERRANEAN FORMATIONS - A method comprises obtaining or providing a treatment fluid comprising a gellable agent comprising at least two primary amino groups, and a crosslinking agent comprising genipin, its conjugates, derivatives, analogs, or combinations thereof and placing the treatment fluid in a subterranean formation. The method may further comprise crosslinking the gellable agent with the crosslinking agent. | 05-26-2016 |
20160152887 | Hydrocarbon Well Treatment Methods and Fluids | 06-02-2016 |
20160160114 | Control of Resin Curing - Systems and methods of treating a zone of a subterranean formation penetrated by a wellbore are described. A composition may include a first solution including at least one amine containing resin; and citraconic anhydride. The composition may also include a second solution mixed with the first solution, where the second solution includes at least one epoxide containing resin. Methods may include providing the treatment fluid to a subterranean formation. | 06-09-2016 |
20160177162 | COMPOSITIONS PROVIDING CONSOLIDATION AND WATER-CONTROL | 06-23-2016 |
20160177672 | Systems And Methods For Inhibiting Scale Formation In A Hydrocarbon Well | 06-23-2016 |
20160186044 | CORE-SHELL TRIGGERED RELEASE SYSTEMS - The present disclosure relates to delivery and release systems, such as core-shell particles. An exemplary composition according to the disclosure can include a carrier element forming an outer shell that defines an inner core. The core can include a reactive agent that is adapted to react with the shell, particularly at an inner interface of the shell with the core materials. The reaction can provide an inside-out degradation of the shell and release of one or more materials therein. The reactive agent may be separated from the shell, such as using a phase change material (PCM). Upon reaching specific environmental conditions, the PCM can change so as the release the reactive agent for reaction with the shell. The systems can be used in various methods to deliver a material to various environments, including underground reservoirs. | 06-30-2016 |
20160194553 | Well Treatment Solid Chemical | 07-07-2016 |
20160376491 | FILTER CAKE REMOVAL COMPOSITION FOR DRILLING FLUIDS AND METHOD OF USE THEREOF - Disclosed is a filter cake removal composition, and method of use thereof, for use in a wellbore for controlled removal of a filter cake present in a target production zone. The filter cake removal composition includes hydrochloric acid and an organic acid. The filter cake removal composition, when a mixture of the hydrochloric acid and the organic acid is applied to the filter cake in the target production zone, is operable to dissolve the filter cake in the target production zone over an extended reaction time. The mixture includes the hydrochloric acid present in an amount of between about 0.1% and 5% by weight and the organic acid present in an amount of between about 0.1% and 10% by weight. | 12-29-2016 |
20160376881 | Well Treatment Methods and Fluids with GLDA Salt - A well servicing fluid includes ingredients including a GLDA salt, a crosslinker, and a viscosifying agent that is not crosslinked by the crosslinker. A well treatment method includes forming a well servicing fluid with ingredients including a GLDA salt, a viscosifying agent, and a crosslinker, the GLDA salt containing a metal cation chelated with a GLDA anion. The well servicing fluid is inserted into a well in a formation. The method includes crosslinking the viscosifying agent and attaining a first viscosity of the well servicing fluid using the crosslinker. After the attaining of the first viscosity, viscosity of the well servicing fluid in the well is decreased to a second viscosity less than the first viscosity by using the GLDA anion. The GLDA salt may be a GLDA calcium salt and the crosslinker may be a zirconium crosslinker. | 12-29-2016 |
20160376884 | Well Testing - Techniques for well testing include providing an amount of a chemical material to a location in a wellbore; reacting the chemical material to generate an exothermic chemical reaction at the location in the wellbore; and fracturing the formation by the exothermic chemical reaction. | 12-29-2016 |
20180022984 | ACTIVATORS FOR INORGANIC OXIDE BREAKERS | 01-25-2018 |
20180022986 | AMIDE BRANCHED AROMATIC GELLING AGENT BREAKERS | 01-25-2018 |
20190144736 | Breaker Fluids and Methods of Use Thereof | 05-16-2019 |