| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 507118000 | Resin is polymer derived from ethylenic monomers only (e.g., maleic, itaconic, etc.) | 72 |
| 20100009874 | PRECIPITATED WEIGHTING AGENTS FOR USE IN WELLBORE FLUIDS - A method of formulating a wellbore fluid that includes precipitating a weighting agent from a solution; and adding the precipitated weighting agent to a base fluid to form a wellbore fluid is disclosed. Fluids and methods of formulating wellbore fluids that contain dispersant coated precipitated weighting agents are also disclosed. | 01-14-2010 |
| 20100035772 | Sealant compositions comprising solid latex - A wellbore sealant composition including a modified latex and a cross-linking agent, wherein the modified latex has undergone a dry particulate state, the modified latex is present in an amount of from 5% to 50% by total weight of the composition, and the modified latex is prepared by removing water from an emulsion polymerized latex system. | 02-11-2010 |
| 20120122739 | VISCOSIFYING POLYMERS AND METHODS OF USE - Fluids for use within a wellbore are provided, comprising amorphous polyalphaolefins and/or amorphous polyisobutylene in an oil-based hydrocarbon solvent. Novel properties of such fluids are described, and the fluids may be used, for example, during drilling or fracturing operations. | 05-17-2012 |
| 20120322695 | Methods for Controlling Lost Circulation in A Subterranean Well and Materials There for - Method for controlling lost circulation in a subterranean well using oil-dispersible lost-circulation materials which comprise fibers that are coated (or sized) with a lipophilic coupling agent, a lipophilic film-forming polymer or both. The fibers are preferably between about 6 mm and about 25 mm long, and between about 10 μm and about 200 μm in diameter. The fibers may be added to carrier fluids comprising oil-base fluids, synthetic-base fluids, invert-emulsion-base fluids and combinations thereof. The preferred fiber concentration in the carrier fluid is between about 0.55 g/L and about 28.5 g/L. The carrier fluid may be a drilling fluid, a spacer fluid or a lost-circulation pill. | 12-20-2012 |
| 20140005079 | Environmentally Friendly Solvent Systems/Surfactant Systems For Drilling Fluids | 01-02-2014 |
| 20140274815 | MODIFIED DEFORMED REINFORCEMENT FIBERS, METHODS OF MAKING, AND USES - The invention relates to modified reinforcement fibers for use in a variety of applications. The modification includes crimping linear or straight reinforcement fibers to create a deformed or different shaped reinforcement fiber. Examples of the shaped fibers resulting from crimping include w-shaped, s-shaped, z-shaped and wedge-shaped. | 09-18-2014 |
| 20150065398 | NANOPARTICLE LUBRICITY AND ANTI-CORROSION AGENT - The invention provides, inter alia, compositions and methods of using a lubricating agent containing nanoparticles in various drilling applications. Furthermore, the lubricating agent may act as a corrosion inhibitor and a friction reducer. | 03-05-2015 |
| 20160024369 | METHOD OF REDUCING FRICTIONAL LOSSES IN OIL AND GAS WELL DRILLING - Fluids for use within a wellbore are provided, comprising amorphous polyalphaolefins (APAO), copolymers of alphaolefins and styrene (APAO-S), terpolymers of alphaolefins and styrene and butadiene (APAO-SB) and/or amorphous polyisobutylene (APIB) and copolymers of polyisobutylene and styrene (APIB-S) and terpolymers of polyisobutylene and styrene and butadiene (APIB-SB) in an oil-based hydrocarbon solvent. Novel properties of such fluids are described, and the fluids may be used, for example, during drilling or fracturing operations. | 01-28-2016 |
| 507119000 | Polymer derived from acrylic acid monomer or derivative | 46 |
| 20090281001 | Drilling Fluids Comprising Hydroxylated Polymers - Drilling fluids comprising polymers containing hydroxylated structural units are useful as accretion inhibiting agents, and/or as fluid rheology controlling agents, and/or as filtrate reducing agents, and/or as lubricating agents. | 11-12-2009 |
| 20100081584 | Compositions and Methods for Treatment of Well Bore Tar - Of the many compositions and methods provided herein, one method includes a method comprising: contacting tar resident in a well bore with a treatment fluid comprising a styrene-acrylate polymer; and allowing the styrene-acrylate polymer to interact with the tar to at least partially reduce the tendency of the tar to adhere to a surface. Another method provided herein includes a method for treating tar sand comprising: contacting the tar sand with a treatment fluid comprising an aqueous fluid and a styrene-acrylate polymer, the tar sand comprising tar and sand; and allowing the styrene-acrylate polymers to interact with the tar to at least partially separate the tar from the sand. | 04-01-2010 |
| 20100099585 | AQUEOUS BASE WELLBORE FLUIDS FOR HIGH TEMPERATURE-HIGH PRESSURE APPLICATIONS AND METHODS OF USE - Embodiments disclosed herein related to an aqueous based well bore fluid that includes at least one ionized polymer, at least one non-ionic polymer, a non-magnetic weighting agent, and an aqueous base fluid. | 04-22-2010 |
| 20100173804 | ADDITIVE TO REDUCE FLUID LOSS FOR DRILLING FLUIDS - Additives for reducing the loss of drilling fluid into the formation surrounding a wellbore during the drilling process as well as drilling fluids comprising the additives and methods of using such additives. The additive includes elastomeric, polymeric, and acrylate, non-agglomerated microspheres. | 07-08-2010 |
| 20110071056 | Degradable Surfactants, Including Degradable Gemini Surfactants, and Associated Methods - Methods and compositions are provided that include degradable gemini surfactants including degradable gemini surfactants. Methods of use include subterranean operations, especially those involving the placement of resin systems, formation of emulsions (e.g., emulsified acids, emulsified fracturing fluids, drilling fluids, etc.), and in the formation of surfactant gelled fluids. Such treatments include, but are not limited to, drilling, stimulation treatments (e.g., fracturing treatments, acidizing treatments), and completion operations (e.g., sand control treatments like gravel packing). | 03-24-2011 |
| 20110183873 | Open-Hole Wellbore Lining - Embodiments of the present invention provide compositions and methods for lining a wellbore. In certain aspects, the compositions and methods comprise providing a fluid composition that is solidifiable or gellable on exposure to actinic radiation of a predetermined wavelength at the wall of open-hole wellbore and providing actinic radiation at the predetermined wavelength to solidify or gel the composition. The predetermined wavelength lies in a range from 100 nm to 1500 nm. | 07-28-2011 |
| 20110281778 | METHOD FOR REDUCING FILTRATE LOSS FROM OIL BASED DRILLING FLUIDS - A method for reducing filtrate loss of oil based drilling fluids comprising the following steps: a) preparing by emulsion polymerization an aqueous dispersion containing: i) from 20% to 60% by weight of a copolymer comprising from 60% to 90% by weight of styrene and/or vinyltoluene monomers, from 7 to 40% by weight of 2-ethylhexyl acrylate monomers and from 0.01 to 3% of polyfunctional unsaturated monomers; ii) from 40 to 80% by weight of water; iii) from 0.1% to 5% by weight of at least one surfactant; b) providing an oil based drilling fluid containing the aqueous dispersion obtained from step a), or its copolymer in powder form; c) injecting and circulating the drilling fluid in the borehole. | 11-17-2011 |
| 20120149604 | Chemical Scavenger For Downhole Chemical Analysis - A method for analyzing formation fluid in a subterranean formation is disclosed, wherein the method includes the steps of: adding a scavenger compound to an analytical reagent to form a reagent solution; collecting an amount of formation fluid into a formation tester, wherein the formation tester includes at least one fluids analyzer comprising at least one probe, at least one flow line, at least one reagent container, and at least one spectral analyzer, wherein the fluids analyzer is configured such that the collected formation fluid is fed through the at least one flow line to the at least one spectral analyzer; mixing an amount of the collected formation fluid with an amount of the reagent solution to form a mixture; and analyzing the mixture downhole. | 06-14-2012 |
| 20120157353 | Water-Based Drilling Fluids Containing Crosslinked Polyacrylic Acid - A method of drilling a gas or oil well consists of use of a water-based drilling fluids containing high molecular weight crosslinked polyacrylic acid as viscosifying agent. The drilling fluid may further contain a lubricant, weighting agent and/or a wetting agent as well as laponite clay. The aqueous based drilling fluid exhibits a coefficient of friction which is substantially close to the coefficient of friction of oil based drilling muds. The drilling fluid exhibits stability at well temperatures in excess of 150° C. | 06-21-2012 |
| 20120270758 | Degradable Surfactants, Including Degradable Gemini Surfactants, and Associated Methods - A subterranean treatment fluid comprising a degradable gemini surfactant composition described by the following formula: | 10-25-2012 |
| 20120289438 | DRILLING FLUIDS COMPRISING HYDROXYLATED POLYMERS - Drilling fluids comprising polymers containing hydroxylated structural units are useful as accretion inhibiting agents, and/or as fluid rheology controlling agents, and/or as filtrate reducing agents, and/or as lubricating agents. | 11-15-2012 |
| 20130065799 | Additives For Inhibition Of Gas Hydrate Formation - The invention provides for the use of copolymers comprising 1 to 99 mol % of structural units of the formula (1) | 03-14-2013 |
| 20130157901 | High Molecular Weight Low Polydispersity Polymers - The present invention relates to synthetic polymers having high molecular weight and low polydispersities, and methods of synthesis thereof. One embodiment of the present invention provides a method of polymerizing that includes dissolving acrylate monomers in a fluid media having an olefin-containing polyalcohol amide surfactant; and initiating a polymerization reaction of the acrylate monomers with a polymerization initiator to produce a polymer having a molecular weight of at least about 500,000 and a polydispersity index of about 1.25 or less. | 06-20-2013 |
| 20130345098 | Oil Absorbent Oilfield Materials as Additives in Oil-Based Drilling Fluid Applications - A method using a single additive to modify or enhance one or more properties of a drilling fluid for drilling a wellbore in a subterranean formation, prevent lost circulation during the drilling, and/or increase bonding strength during cementing of the wellbore. The additive comprises an oil absorbent material comprising homopolymers or copolymers comprising styrene butadiene, acrylate, phthalate, and carbonate salts. | 12-26-2013 |
| 20140135238 | WATER-BASED DRILLING FLUIDS CONTAINING CROSSLINKED POLYACRYLIC ACID - A water-based drilling fluid containing high molecular weight crosslinked polyacrylic acid as viscosifying agent exhibits stability at well temperatures in excess of 150° C. The drilling fluid may further contain a lubricant, weighting agent and/or a wetting agent as well as laponite clay. The aqueous based drilling fluid exhibits a coefficient of friction which is substantially close to the coefficient of friction of oil based drilling muds. | 05-15-2014 |
| 20160032167 | Natural Oil-Derived Wellbore Compositions and Methods of Use - Compositions useful as wellbore fluids are generally disclosed. In some embodiments, the compositions include polymerizable olefinic surfactant compositions, which, under certain conditions, can polymerize via free-radical polymerization to form surfactant polymers. In some embodiments, the compositions are introduced to an oil well as part of the drilling or extraction process, e.g., to assist in flushing hydrocarbon material out of subterranean formations. | 02-04-2016 |
| 507120000 | Nitrogen is attached directly or indirectly to the acrylic acid monomer or derivative by nonionic bonding (e.g., acrylamide, acrylonitrile, etc.) | 30 |
| 20090143254 | Glycerol Based Drilling Fluids - The present invention relates to glycerol based drilling fluids. In particular, the invention relates to drilling fluids comprising a 95-20 volume % glycerol/water solution capable of stabilizing water-sensitive formations during drilling and the use of such solutions for drilling a well having water-sensitive formations. | 06-04-2009 |
| 20090247428 | Wellbore Fluid - There is provided a wellbore fluid having a continuous aqueous phase, and comprising at least one polymer which contains both hydrophilic units and hydrophobic units, at least some of said hydrophilic units containing sulfonate groups, and less than 50% by weight of said hydrophilic units comprising —CH | 10-01-2009 |
| 20100016179 | Wellbore Fluid - There is provided a wellbore fluid having a continuous aqueous phase, and comprising at least one polymer which:—has a molecular weight in the range of from 2,000 to less than 100,000; contains hydrophilic units such that the polymer is at least 2% soluble in water at 20° C., and such that less than 50% by weight of said hydrophilic units comprise —CH | 01-21-2010 |
| 20100305007 | COPOLYMER BASED ON A SULFONIC ACID-CONTAINING COMPOUND - A copolymer containing, as monomer components, a) at least one sulfonic acid-containing compound, b) at least one nitrogen-containing N-vinylamide, one acrylamide or methacrylamide and c) at least one bifunctional or higher-functional vinyl ether is proposed. These copolymers are suitable in particular as thixotropic agents, antisegregation agents and water retention agents and overall as an additive in cement-containing but also gypsum-based systems. Such copolymers having a molecular weight of >40 000 g/mol can be used in particular as admixtures in the exploration of mineral oil and natural gas deposits. | 12-02-2010 |
| 20110092396 | COPOLYMER FOR SHALE STABILIZATION AND METHOD OF USE - Embodiments disclosed herein relate to methods for stabilizing shales while drilling a wellbore into an earthen formation comprising circulating an aqueous based wellbore fluid in the wellbore while drilling through shales; wherein the aqueous-based wellbore fluid comprises a copolymer of acrylamide-type comonomers and at least one cationic comonomer. | 04-21-2011 |
| 20110224108 | WATER-BASED POLYMER DRILLING FLUID AND METHOD OF USE - A water-based drilling fluid comprises a polymer which is a non-ionic polymer or an anionic polymer. The polymer can be a polyaerylamide. The fluid is used for drilling subterranean formations containing heavy crude oil and bitumen-rich oil sands, and may comprise additional fluid components. | 09-15-2011 |
| 20110294704 | Permeability-Modifying Drilling Fluids and Methods of Use - Methods of reducing the permeability of a subterranean formation to aqueous-based fluids using a water-soluble relative permeability modifier that comprises a hydrophobically modified polymer, wherein the hydrophobically modified polymer is a reaction product of: a hydrophilic polymer that comprises a polymer selected from the group consisting of a polyvinylamine, a poly(vinylamine/vinyl alcohol), and an alkyl acrylate polymer; and, a hydrophobic compound comprising at least one alkyl chain having a carbon chain length between about 4 and about 22 carbons. The water-soluble relative permeability modifier may be placed within a subterranean drilling operation such that the water-soluble relative permeability modifier attaches onto surfaces within the subterranean formation to effect permeability of aqueous fluids. | 12-01-2011 |
| 20120040873 | GLYCEROL BASED DRILLING FLUIDS - The present invention relates to glycerol based drilling fluids. In particular, the invention relates to drilling fluids comprising a 95-20 volume % glycerol/water solution capable of stabilizing water-sensitive formations during drilling and the use of such solutions for drilling a well having water-sensitive formations. | 02-16-2012 |
| 20130157902 | High Molecular Weight Low Polydispersity Polymers - The present invention relates to synthetic polymers having high molecular weights and low polydispersities and methods of synthesis. In one embodiment of the present invention, a polymer includes a polyacrylate polymer obtained from a polymerization reaction in which the polyacrylate polymer has a molecular weight of at least about 500,000 and a polydispersity index of about 1.25 or less. | 06-20-2013 |
| 20130217603 | USE OF NEUTRAL-DENSITY PARTICLES TO ENHANCE BARITE SAG RESISTANCE AND FLUID SUSPENSION TRANSPORT - The present invention relates to particles that are useful for enhancing hindered settling in suspensions. One embodiment of the present invention provides a method of providing a subterranean treatment fluid including a base fluid and a weighting agent having a first average settling velocity; and a neutral-density particle; and mixing the subterranean treatment fluid with the neutral-density particle thereby reducing the weighting agent to a second average settling velocity. | 08-22-2013 |
| 20140162910 | Wellbore Servicing Compositions and Methods of Making and Using Same - A method of servicing a wellbore in a subterranean formation having one or more lost circulation zones comprising placing a wellbore servicing fluid comprising a sealing composition into the wellbore, wherein the sealing composition comprises a latex and an accelerator and wherein the latex, the accelerator or both are encapsulated with an encapsulation material. A wellbore servicing fluid comprising a latex and an accelerator wherein the latex, the accelerator, or both are encapsulated. | 06-12-2014 |
| 20140179567 | REVERSIBLY COAGULATABLE AND REDISPERSABLE POLYMER INCLUDING AT LEAST ONE MONOMER INCLUDING A SWITCHABLE-AMPHIPHILIC FUNCTIONAL GROUP AND METHODS OF USING THE SAME - The present invention relates to a polymer including at least one monomer comprising a switchable-amphiphilic functional group. Various embodiments provide a methods of treating a subterranean formation with the polymer, compositions including the polymer, and methods of making compositions including the polymer. | 06-26-2014 |
| 20140287967 | WATER-SOLUBLE POLYMERS FOR OIL RECOVERY - The present invention refers to the use of anionic water-soluble polymers being partially or totally neutralized with an organic counter-ion for oil filed application, especially tertiary oil recovery steps. | 09-25-2014 |
| 20140323361 | TREATMENT OF SUBTERRANEAN FORMATIONS USING A COMPOSITION INCLUDING A LINEAR TRIBLOCK COPOLYMER AND INORGANIC PARTICLES - The present invention relates to treatment of subterranean formations using compositions that experience an increase in viscosity as a result of the application of heat or shear. In various embodiments, the present invention provides a method of treating a subterranean formation. The method can include obtaining or providing a composition including a linear triblock copolymer and inorganic particles. The method can include at least one of shearing and heating the composition, to increase the viscosity thereof. The method can also include contacting the composition with a subterranean material downhole. | 10-30-2014 |
| 20150299438 | WATER SWELLABLE RUBBER COMPOSITION HAVING STABLE SWELLING PROPERTY AT HIGH TEMPERATURES - A water swellable rubber composition comprising (a) a non-water swellable base rubber, (b) an ethylene oxide based hydrophilic elastomer having from zero up to and including 20 mole % of a crosslinkable curable functional group, and (c) a water swellable non-elastomeric material. The composition has excellent water swell characteristics under prolonged exposure to high temperature and various electrolyte solutions (strongly saline as well as acid conditions) and is particularly suitable for oil field applications. When the ethylene oxide based hydrophilic elastomer (b) has from zero to less than 5 mole % of crosslinkable functional group, the amount of (b) is between about 30 parts and 300 parts by weight based on 100 parts by weight of the base rubber (a) and the amount of (c) is between about 20 parts and 200 parts by weight based on 100 parts by weight of the base rubber (a), the composition is characterized by good shape retention after undergoing constrained swell, as well as a high degree of constrained swell at elevated temperatures in different saline concentrations. | 10-22-2015 |
| 20150329763 | STABILIZATION OF POLYACRYLAMIDE EMULSION FORMULATIONS - The current invention provides a method to form a stable blend of polyacrylamide water-in-oil emulsion and breaker surfactants such as silicon polyether copolymer and linear or branched alcohol ethoxylate surfactants. The composition can be employed, for example, as a friction reducing additive for water based fracturing fluid, or a drilling mud additive. | 11-19-2015 |
| 20150361321 | GELLABLE TREATMENT FLUIDS COMPRISING QUATERNARY AMMONIUM SALT GEL-TIME MODIFIERS AND METHODS FOR USE THEREOF - Methods for reducing the amount of water produced from a subterranean formation can include the use of a gellable treatment fluid that comprises a quaternary ammonium salt as a gel-time modifier. The gellable treatment fluids can comprise an aqueous base fluid, a base polymer comprising an acrylamide monomer unit, an organic crosslinking agent, and a gel-time modifier comprising a quaternary ammonium salt. | 12-17-2015 |
| 20160200848 | CATIONIC COPOLYMER AND USE THEREOF IN LOST CIRCULATION ADDITIVE | 07-14-2016 |
| 20160251567 | VISCOSIFYING FRICTION REDUCERS | 09-01-2016 |
| 20180022979 | CROSSLINKED POLYMER COMPOSITIONS AND METHODS FOR USE IN SUBTERRANEAN FORMATION OPERATIONS | 01-25-2018 |
| 507121000 | Sulfur is attached directly or indirectly to the acrylic acid monomer or derivative by nonionic bonding (e.g., acrylamidoalkane sulfonates, etc.) | 10 |
| 20080227665 | Aqueous-Based Insulating Fluids and Related Methods - Provided herein are methods that include In one embodiment, the present invention provides a method comprising: providing an annulus between a first tubing and a second tubing; providing an aqueous-based insulating fluid that comprises an aqueous base fluid, a water-miscible organic liquid, and a synthetic polymer; and placing the aqueous-based insulating fluid in the annulus. Another method provided is a method comprising: providing a tubing comprising a first fluid located within a well bore such that an annulus is formed between the tubing and a surface of the well bore; providing an aqueous-based insulating fluid that comprises an aqueous base fluid, a water-miscible organic liquid, and a synthetic polymer; and placing the aqueous-based insulating fluid in the annulus. | 09-18-2008 |
| 20090143255 | Methods and Compositions for Improving Well Bore Stability in Subterranean Formations - Films that may be created and/or placed in a well bore that prevent the flow of fluid into cracks or fractures in a portion of a subterranean formation penetrated by the well bore, and associated methods of use, are provided. In one embodiment, the methods comprise: providing a treatment fluid that comprises a base fluid and a film-forming polymer; introducing the treatment fluid into a portion of a well bore penetrating a portion of a subterranean formation, the well bore comprising an interior wall; and allowing the film-forming polymer to electrostatically interact with a surface of the interior wall of the well bore to form a substantially continuous film along a portion of the interior wall of the well bore, the substantially continuous film being capable of hindering the flow of a fluid therethrough. | 06-04-2009 |
| 20100062952 | Copolymer based on olefinic sulphonic acids - A copolymer based on olefinic sulphonic acids as monomer component a) and an organosilicone-containing compound as reactive component b) is proposed, for which in particular 2-acrylamido-2-methylpropanesulphonic acid (AMPS®) is suitable as component a) and vinyltrimethoxysilane, vinyltriethoxysilane and trichlorosilane as component b). This copolymer, which may have a molecular weight of from 5,000 to 5,000,000 g/mol, may also comprise further reaction components c) and d) in addition to the two main components for which further reaction components (meth)acrylamides or vinyl ethers are suitable. These copolymers, which are obtainable in particular by precipitation or gel polymerizations, are used in particular in applications in construction chemistry and here especially as water retention agents and fluid loss additives in drilling fluids and for well cementing. The novel copolymers are distinguished by pronounced thermal stability, which is displayed especially under difficult pressure conditions and at high salinities. | 03-11-2010 |
| 20110263465 | Use Of Vinyl Phosphonic Acid For Producing Biodegradable Mixed Polymers And The Use Thereof For Exploring And Extracting Petroleum And Natural Gas - The invention relates to the use of vinyl phosphonic acid or a salt thereof for improving the biodegradability of mixed polymers, comprising 25 to 99.5% by weight of structural units of one or more monomers selected from the group made of compounds of formula (1) and formula (3), | 10-27-2011 |
| 20120077718 | COPOLYMER AND PREPARATION METHOD AND APPLICATION THEREOF - A copolymer and preparation method and application thereof are disclosed. The copolymer is random copolymer obtained from monomers consisting of acrylamide, acrylic acid, alkenyl sulfonate, 2-acrylamido-dodecyl sulfonate, p-styrene sulfonate or isoprene sulfonate and so on. The copolymer of present invention can be used as fluid loss additive and has good fluid loss properties, which would not make the drilling fluid thicken at high temperature of 200° C. and high salt conditions of saturated brine. It has a medium-pressure fluid loss after aging and rolling for 16 h at high temperature of 200° C., as measured in accordance with the American Petroleum Institute Standard Test at room temperature, and has good properties of high temperature-resisting and salt-resisting. | 03-29-2012 |
| 20120129734 | USE OF HYDROPHOBICALLY ASSOCIATED COPOLYMER AS AN ADDITIVE IN SPECIFIC OILFIELD APPLICATIONS - What is proposed is the use of a water-soluble hydrophobically associating copolymer as an additive in the development, exploitation and completion of underground mineral oil and natural gas deposits and in deep drillings, wherein the copolymer comprises (a) at least one monoethylenically unsaturated monomer (a) selected from | 05-24-2012 |
| 20120202718 | PRECIPITATED WEIGHTING AGENTS FOR USE IN WELLBORE FLUIDS - A method of formulating a wellbore fluid that includes precipitating a weighting agent from a solution; and adding the precipitated weighting agent to a base fluid to form a wellbore fluid is disclosed. Fluids and methods of formulating wellbore fluids that contain dispersant coated precipitated weighting agents are also disclosed. | 08-09-2012 |
| 20130310284 | Methods for Stabilizing Water-Sensitive Clays - Methods of stabilizing water-sensitive clays in subterranean formations may include introducing a drill-in treatment fluid into at least a portion of a subterranean formation comprising water-sensitive minerals, where providing the drill-in treatment fluid comprises an aqueous-based fluid and a hydrophobically-modified cationic polymer; and allowing the hydrophobically-modified cationic polymer to at least partially coat the water-sensitive mineral. | 11-21-2013 |
| 20130324443 | SALT-TOLERANT, THERMALLY-STABLE RHEOLOGY MODIFIERS - A salt-tolerant, thermally-stable rheology modifier and, in particular, a rheology modifier for applications in oil-field well-bore fluids. In accordance with one aspect, the rheology modifier comprises a terpolymer of acrylamide, 2-acrylamido-2-methyl-propanesulfonic acid (AMPS) and a long-chain alkyl acrylate wherein the terpolymer is prepared by dispersion polymerization. | 12-05-2013 |
| 20150133347 | AQUEOUS AMPHOLYTE POLYMER CONTAINING SOLUTIONS FOR SUBTERRANEAN APPLICATIONS - A aqueous solution that includes water, from 100,000 to 300,000 ppm of dissolved solids, from 0.5 to 3 gallons per thousand gallons of a water-in-oil emulsion, and an inverting surfactant. The water-in oil emulsion includes an oil phase and an aqueous phase where the oil phase is a continuous phase comprising an inert hydrophobic liquid and the aqueous phase is present as dispersed distinct particles in the oil phase. The aqueous phase contains water, a water soluble polymer, and surfactants. The water soluble polymer includes 30 to 50 weight percent of a non-ionic monomer, 5 to 15 weight percent of a sulfonic acid containing monomer, and 40 to 60 weight percent of a cationic monomer. The water soluble polymer makes up from 10 to 35 weight percent of the water-in-oil emulsion. | 05-14-2015 |
| 507122000 | Sulfur is attached directly or indirectly to the ethylenic monomer by nonionic bonding | 1 |
| 20130274150 | LIGNOSULFONATE GRAFTS WITH AN ACID, ESTER AND NON-IONIC MONOMERS - The present invention generally relates to controlling the viscosity of water-based mud systems. More particularly, the present invention relates to methods and compositions for thinning and deflocculating aqueous based fluids used in well drilling and other well operations in subterranean formations, especially subterranean formations containing oil and/or gas. The invention also relates to a drilling fluid thinner and/or dispersant having improved temperature stability, dispersing properties and “solids contamination” tolerance. | 10-17-2013 |
| 507124000 | Polymer contains vinyl alcohol unit | 4 |
| 20100069268 | PH-Regulated Thickener System - Compositions comprising: (A) at least one surfactant of the general formula (I) | 03-18-2010 |
| 20100137168 | NANOEMULSIONS - Nanoemulsions have been discovered to be useful to the oil field. More particularly water-in-oil (W/O), oil-in-water (O/W) and other classes of nanoemulsions have found beneficial application in drilling, completion, well remediation and other oil and gas industry related operations. Additionally, nanoemulsions may reduce friction pressure losses, as well as reduce subsidence of solid weight material during oil and gas operations. New preparation methods for nanoemulsions have also been discovered. | 06-03-2010 |
| 20100298175 | LOST CIRCULATION MATERIAL FOR OILFIELD USE - A composition for reducing lost circulation in a well, while drilling the well with a drilling mud, which is composed of a base fluid, a mixture of particles, and a blend of fibers. The composition is used by stopping drilling with the mud, injecting a spacer, injecting the water-based composition, injecting a spacer, and resuming drilling with the oil-based mud. | 11-25-2010 |
| 20110183874 | LOST CIRCULATION MATERIAL FOR OILFIELD USE - A composition for reducing lost circulation in a well, while drilling the well with a drilling mud, which is composed of a base fluid, a mixture of particles, and a blend of fibers. The composition is used by stopping drilling with the mud, injecting a spacer, injecting the water-based composition, injecting a spacer, and resuming drilling with the oil-based mud. | 07-28-2011 |
| 507125000 | Carbocyclic ring is attached directly or indirectly to the ethylenic monomer by nonionic bonding (e.g., styrene, vinyl toluene, etc.) | 13 |
| 20090286698 | THERMOSET NANOCOMPOSITE PARTICLES, PROCESSING FOR THEIR PRODUCTION, AND THEIR USE IN OIL AND NATURAL GAS DRILLING APPLICATIONS - Thermoset polymer particles are used in many applications requiring lightweight particles possessing high stiffness, strength, temperature resistance, and/or resistance to aggressive environments. The present invention relates to the use of two different methods, either each by itself or in combination, to enhance the stiffness, strength, maximum possible use temperature, and environmental resistance of such particles. One method is the application of post-polymerization process steps (and especially heat treatment) to advance the curing reaction and to thus obtain a more densely crosslinked polymer network. In general, its main benefits are the enhancement of the maximum possible use temperature and the environmental resistance. The other method is the incorporation of nanofillers, resulting in a heterogeneous “nanocomposite” morphology. In general, its main benefits are increased stiffness and strength. Nanofiller incorporation and post-polymerization heat treatment can also be combined to obtain the benefits of both methods simultaneously. The present invention relates to the development of thermoset nanocomposite particles. It also relates to the optional further improvement of the heat resistance and environmental resistance of said particles via post-polymerization heat treatment. Furthermore, it also relates to processes for the manufacture of said particles. Finally, it also relates to the use of said particles in the construction, drilling, completion and/or fracture stimulation of oil and natural gas wells; for example, as a proppant partial monolayer, a proppant pack, an integral component of a gravel pack completion, a ball bearing, a solid lubricant, a drilling mud constituent, and/or a cement additive. | 11-19-2009 |
| 20100273683 | Compositions having hase rheology modifiers - A monomer compound that contains at least one polymerizable functional group per molecule, and at least one bicycloheptyl-, bicycloheptenyl-, or branched (C | 10-28-2010 |
| 20110009298 | Ultra High Viscosity Pill and Methods for Use with An Oil-Based Drilling System - A fluid pressure transmission pill (FPTP) having an ultra-high viscosity for use in association with hydrocarbon drilling and exploration operations, particularly, managed pressure drilling (MPD) operations, is described. The ultra-high viscosity pill is a weighted pill composition that includes a hydrocarbon fluid, a thixotropic viscosifying agent, one or more activators, an emulsifier/wetting agent, a fluid loss control additive, and a weighting material. In accordance with selected aspects of the described fluid pressure transmission pill, the ratio of the amount of the thixotropic viscosifying agent to the activator is a ratio of about 7:1, and the weighting material is a barium-containing solid-phase material. Also described are methods of use of such FPTP products in subterranean operations, such as well killing operations during managed pressure drilling. | 01-13-2011 |
| 20120172261 | Weighted Elastomers, Cement Compositions Comprising Weighted Elastomers, and Methods of Use - Methods and compositions are provided that relate to weighted elastomers. The weighted elastomers may comprise an elastomer and a weighting agent attached to an outer surface of the elastomer. An embodiment includes a method of cementing that comprises providing a cement composition containing cement, water, and a weighted elastomer. In addition, the cement composition may be introduced into a subterranean formation and allowed to set therein. | 07-05-2012 |
| 20120202719 | THERMOSET NANOCOMPOSITE PARTICLES, PROCESSING FOR THEIR PRODUCTION, AND THEIR USE IN OIL AND NATURAL GAS DRILLING APPLICATIONS - Use of two different methods, either each by itself or in combination, to enhance the stiffness, strength, maximum possible use temperature, and environmental resistance of such particles is disclosed. One method is the application of post-polymerization process steps (and especially heat treatment) to advance the curing reaction and to thus obtain a more densely crosslinked polymer network. The other method is the incorporation of nanofillers, resulting in a heterogeneous “nanocomposite” morphology. Nanofiller incorporation and post-polymerization heat treatment can also be combined to obtain the benefits of both methods simultaneously. The present invention relates to the development of thermoset nanocomposite particles. Optional further improvement of the heat resistance and environmental resistance of said particles via post-polymerization heat treatment; processes for the manufacture of said particles; and use of said particles in the construction, drilling, completion and/or fracture stimulation of oil and natural gas wells are described. | 08-09-2012 |
| 20130085085 | Fluid Loss Additives and Methods of Making and Using Same - A non-aqueous wellbore servicing fluid comprising a fluid loss additive wherein the fluid loss additive comprises the reaction product of (i) a functional polymer and (ii) an oligomerized fatty acid. A method of conducting an oil-field operation comprising placing a non-aqueous wellbore servicing fluid downhole wherein the non-aqueous wellbore servicing fluid comprises a fluid loss additive comprising the reaction product of (i) a functional polymer and (ii) an oligomerized fatty acid. | 04-04-2013 |
| 20130085086 | Fluid Loss Additives and Methods of Making and Using Same - A non-aqueous wellbore servicing fluid comprising a fluid loss additive wherein the fluid loss additive comprises the reaction product of (i) a functional polymer and (ii) an oligomerized fatty acid. A method of conducting an oil-field operation comprising placing a non-aqueous wellbore servicing fluid downhole wherein the non-aqueous wellbore servicing fluid comprises a fluid loss additive comprising the reaction product of (i) a functional polymer and (ii) an oligomerized fatty acid. | 04-04-2013 |
| 20130130944 | Ultra High Viscosity Pill and Methods for Use with an Oil-Based Drilling System - A fluid pressure transmission pill (FPTP) having an ultra-high viscosity for use in association with hydrocarbon drilling and exploration operations, particularly, managed pressure drilling (MPD) operations, is described. The ultra-high viscosity pill is a weighted pill composition that includes a hydrocarbon fluid, a thixotropic viscosifying agent, one or more activators, an emulsifier/wetting agent, a fluid loss control additive, and a weighting material. In accordance with selected aspects of the described fluid pressure transmission pill, the ratio of the amount of the thixotropic viscosifying agent to the activator is a ratio of about 7:1, and the weighting material is a barium-containing solid-phase material. Also described are methods of use of such FPTP products in subterranean operations, such as well killing operations during managed pressure drilling. | 05-23-2013 |
| 20140349896 | PROPPANT AND METHOD OF PROPPING A SUBTERRANEAN FRACTURE - A proppant for use in fracturing a subterranean formation is characterized by specific mean particle size, particle size standard deviation, and aspect ratio. The proppant is prepared from a thermoplastic composition that includes specific amounts of a polyamide and a poly(phenylene ether). The proppant is useful for propping a fracture in a subterranean formation. | 11-27-2014 |
| 20150011439 | THERMOSET NANOCOMPOSITE PARTICLES, PROCESSING FOR THIER PRODUCTION, AND THEIR USE IN OIL AND NATURAL GAS DRILLING APPLICATIONS - Use of two different methods, either each by itself or in combination, to enhance the stiffness, strength, maximum possible use temperature, and environmental resistance of thermoset polymer particles is disclosed. One method is the application of post-polymerization process steps (and especially heat treatment) to advance the curing reaction and to thus obtain a more densely crosslinked polymer network. The other method is the incorporation of nanofillers, resulting in a heterogeneous “nanocomposite” morphology. Nanofiller incorporation and post-polymerization heat treatment can also be combined to obtain the benefits of both methods simultaneously. The present invention relates to the development of thermoset nanocomposite particles. Optional further improvement of the heat resistance and environmental resistance of said particles via post-polymerization heat treatment; processes for the manufacture of said particles; and use of said particles in the construction, drilling, completion and/or fracture stimulation of oil and natural gas wells are described. | 01-08-2015 |
| 20150291873 | THERMOSET NANOCOMPOSITE PARTICLES, PROCESSING FOR THIER PRODUCTION, AND THEIR USE IN OIL AND NATURAL GAS DRILLING APPLICATIONS - Use of two different methods, either each by itself or in combination, to enhance the stiffness, strength, maximum possible use temperature, and environmental resistance of thermoset polymer particles is disclosed. One method is the application of post-polymerization process steps (and especially heat treatment) to advance the curing reaction and to thus obtain a more densely crosslinked polymer network. The other method is the incorporation of nanofillers, resulting in a heterogeneous “nanocomposite” morphology. Nanofiller incorporation and post-polymerization heat treatment can also be combined to obtain the benefits of both methods simultaneously. The present invention relates to the development of thermoset nanocomposite particles. Optional further improvement of the heat resistance and environmental resistance of said particles via post-polymerization heat treatment; processes for the manufacture of said particles; and use of said particles in the construction, drilling, completion and/or fracture stimulation of oil and natural gas wells are described. | 10-15-2015 |
| 20150353809 | THERMOSET NANOCOMPOSITE PARTICLES, PROCESSING FOR THEIR PRODUCTION, AND THEIR USE IN OIL AND NATURAL GAS DRILLING APPLICATIONS - Use of two different methods, either each by itself or in combination, to enhance the stiffness, strength, maximum possible use temperature, and environmental resistance of thermoset polymer particles is disclosed. One method is the application of post-polymerization process steps (and especially heat treatment) to advance the curing reaction and to thus obtain a more densely crosslinked polymer network. The other method is the incorporation of nanofillers, resulting in a heterogeneous “nanocomposite” morphology. Nanofiller incorporation and post-polymerization heat treatment can also be combined to obtain the benefits of both methods simultaneously. The present invention relates to the development of thermoset nanocomposite particles. Optional further improvement of the heat resistance and environmental resistance of said particles via post-polymerization heat treatment; processes for the manufacture of said particles; and use of said particles in the construction, drilling, completion and/or fracture stimulation of oil and natural gas wells are described. | 12-10-2015 |
| 20160152881 | THERMOSET NANOCOMPOSITE PARTICLES, PROCESSING FOR THEIR PRODUCTION, AND THEIR USE IN OIL AND NATURAL GAS DRILLING APPLICATIONS | 06-02-2016 |
