Class / Patent application number | Description | Number of patent applications / Date published |
507225000 | Nitrogen is attached directly or indirectly to the acrylic acid monomer or derivative by nonionic bonding (e.g., acrylamide, acrylonitrile, etc.) | 62 |
20080214413 | 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 polyacrylamide. The fluid is used for drilling subterranean formations containing heavy crude oil and bitumen-rich oil sands, and may comprise additional fluid components. | 09-04-2008 |
20090023617 | Friction reducer performance by complexing multivalent ions in water - Embodiments relate to improving the performance of anionic friction reducing polymers in water containing multivalent ions. Exemplary embodiments relate to methods of improving the performance of anionic friction reducing polymers in a subterranean treatment, wherein the method comprises adding a complexing agent to water comprising multivalent ions. The method comprises adding the anionic friction reducing polymer to the water comprising the multivalent ions, wherein the anionic friction reducing polymer is added in an amount less than or equal to about 0.15% by weight of the water. The method comprises introducing the water comprising the multivalent ions, the complexing agent and the anionic friction reducing polymer into at least a portion of the subterranean formation such that the friction reducing polymer reduces energy loss due to turbulence in the water. The complexing agent complexes with at least a portion of the multivalent ions in the water such that the reduction of energy loss by the friction reducing polymer is improved. | 01-22-2009 |
20100016183 | Sealant Compositions and Methods Utilizing Nano-Particles - The present invention includes well treatment fluids and methods utilizing nano-particles and, in certain embodiments, to sealant compositions and methods utilizing nano-particles. The nano-particles may be incorporated into the sealant composition in different forms, including as discrete nano-particles, encapsulated nano-particles, agglomerated nano-particles, or in a liquid suspension. | 01-21-2010 |
20100069271 | Viscosity Breaker for Polyacrylamide Friction Reducers - A well treating fluid useful in slickwater fracturing processes contains polyacrylamide friction reducer and a viscosity breaker capable of reducing the viscosity of the well treating fluid to about the viscosity of water at ambient temperatures of typical underground formations. The viscosity breaker is selected from the group consisting of hydrogen peroxide, calcium peroxide, magnesium peroxide, and zinc peroxide and is present in an amount above about 0.002% by weight. | 03-18-2010 |
20100105580 | Polymers For Oilfield Applications - This invention provides polymers having side chain groups selected from at least one of the following: | 04-29-2010 |
20100190665 | FLUID AND METHOD FOR AGGLOMERATING PARTICLES IN A WELL SERVICE OPERATION - Flocculants and/or coagulants are used with recyclable drilling fluids to agglomerate particles and in particular fine solids (“fines”) including coal fines, such that they settle out of the fluid. The most widely used flocculants are different types of polymers including polyacrylamide (PMA) having different molecular weights, polyethylene oxide (PEO) having various molecular weights and other suitable polymeric flocculents known in coal beneficiation industry. For coal fines, other coagulants such as hydrocarbons, including kerosene, fuel oil, or a C | 07-29-2010 |
20100234250 | Methods of treating a portion of a well with a polymer or polymer system capable of forming a gel that dissolves at a low and high pH - Methods for treating a portion of a well include the steps of: (a) forming a treatment gel comprising a polymer or a polymer system of a mixture of two or more polymers, wherein the polymer or the polymer system is capable of each of the following, when tested at at least one concentration in the range of 2-10 times C* in deionized water, at about 22° C., and at about 1 atmosphere pressure: (i) forming a polymer gel of the polymer and water at at least one pH in the range of 4-9, wherein a bulk form of the polymer gel has a G′ greater than G″ at all frequencies in the range of 1 rad/sec-100 rad/sec; (ii) dissolving at at least one pH in the range of 2-4; and (iii) dissolving at at least one pH in the range of 9-12; (b) dispersing the treatment gel in a fluid to form a treatment fluid; (c) introducing the treatment gel in a treatment fluid into a portion of a well; and (d) after the step of introducing the treatment gel, adjusting the pH of the treatment gel to at least one pH in the range of 2-4 or 9-12. | 09-16-2010 |
20100234251 | Methods of treating a portion of a well with a polymer or polymer system capable of forming a gel that dissolves at a low and high pH - Methods for treating a portion of a well include the steps of: (a) forming a treatment gel comprising a polymer or a polymer system of a mixture of two or more polymers, wherein the polymer or the polymer system is capable of each of the following, when tested at least one concentration in the range of 2-10 times C* in deionized water, at about 22° C., and at about 1 atmosphere pressure: (i) forming a polymer gel of the polymer and water at least one pH in the range of 4-9, wherein a bulk form of the polymer gel has a G′ greater than G″ at all frequencies in the range of 1 rad/sec-100 rad/sec; (ii) dissolving at least one pH in the range of 2-4; and (iii) dissolving at least one pH in the range of 9-12; (b) dispersing the treatment gel in a fluid to form a treatment fluid; (c) introducing the treatment gel in a treatment fluid into a portion of a well; and (d) after the step of introducing the treatment gel, adjusting the pH of the treatment gel to at least one pH in the range of 2-4 or 9-12. | 09-16-2010 |
20100234252 | CROSSLINKED SWELLABLE POLYMER - The invention is directed to stable crosslinked water-soluble swellable polymers, methods for making same, and their various uses in the hygiene and medical arts, gel electrophoresis, packaging, agriculture, the cable industry, information technology, in the food industry, papermaking, use as flocculation aids, and the like. More particularly, the invention relates to a composition comprising expandable polymeric microparticles having labile crosslinkers and stable crosslinkers, said microparticle mixed with a fluid and an unreacted tertiary crosslinker that is capable of further crosslinking the microparticle on degradation of the labile crosslinker so as to form a stable gel. A particularly important use is as an injection fluid in petroleum production, where the expandable polymeric particles are injected into a well and when the heat and/or pH of the well cause degradation of the labile crosslinker and when the particle expands, the tertiary crosslinker crosslinks the polymer to form a stable gel, thus diverting water to lower permeability regions and improving oil recovery. | 09-16-2010 |
20110059873 | PROCESS OF USING HARD BRINE AT HIGH ALKALINITY FOR ENHANCED OIL RECOVERY (EOR) APPLICATIONS - The present invention describes the use of EDTA and/or alkali treated hard brine at high pH for making ASP formulations for EOR applications. | 03-10-2011 |
20110071058 | ENVIRONMENTALLY FRIENDLY COMPOSITION FOR SLICKWATER APPLICATION - The invention provides an environmentally friendly composition including a friction reducer, a biocide, a scale inhibitor, and optionally a clay stabilizer. | 03-24-2011 |
20110098202 | SWELLABLE COMPOSITIONS FOR BOREHOLE APPLICATIONS - This invention relates to compositions which swell on contact with water. In particular, the invention is suitable for use in subterranean wells such as those used in the oil and gas industry. | 04-28-2011 |
20110118153 | METHOD OF CONTINUOUS DISSOLUTION OF POLYACRYLAMIDE EMULSIONS FOR ENHANCED OIL RECOVERY (EOR) - Enhanced oil recovery method consisting in continuously dissolving, in the injection water, a stable invert emulsion of acrylamide (co)polymer containing at least one inverting agent, and a water soluble polymer, whereby:
| 05-19-2011 |
20110183875 | Vulcanisable guanidine-free mixtures containing ethylene acrylate (AEM), polyacrylate (ACM) and/or hydrogenated acrylnitrile (HNBR)-based rubbers compounds, vulcanisates, prepared by cross-linking this vulcanisable mixtures and their use - The present invention relates vulcanisable guanidine-free mixtures containing ethylene acrylate (AEM), polyacrylate (ACM) and/or hydrogenated acrylonitrile (HNBR)-based rubbers compounds having an improved scorch resistance, to vulcanisates, prepared by cross-linking this vulcanisable mixtures and their use in automotive, oil-field and/or off-shore applications. | 07-28-2011 |
20110195876 | Olefinically Unsaturated Phosphonate Compounds, Polymers Made Therefrom And Their Use - This invention relates to compounds of formulae (1a) and (1b) | 08-11-2011 |
20110245114 | WELL SERVICING FLUID - A well servicing fluid formulated with components comprising a friction reducer having at least one polymer unit chosen from acrylamide groups, acrylate groups, sulfo groups, and maleic acid groups; and an anionic surfactant, a cationic surfactant and an aqueous base capable of forming a viscoelastic gel. Methods of making the well servicing fluid and methods of employing the well servicing fluid in a well are also disclosed. | 10-06-2011 |
20110269651 | Water-Soluble Degradable Synthetic Vinyl Polymers and Related Methods - Of the many embodiments presented herein, one is a subterranean treatment fluid comprising: an aqueous fluid; and a water-soluble degradable synthetic vinyl polymer having a labile link in its backbone. Also provided in one instance is a water-soluble degradable synthetic vinyl polymer with labile group in its backbone made by a redox polymerization, the redox polymerization reaction comprising these reactants: a macroinitiator that comprises a labile link, an oxidizing metal ion, and a vinyl monomer. | 11-03-2011 |
20110287984 | TREATMENT FLUIDS MADE OF HALOGENISOCYANURIC ACID AND ITS SALTS FOR OPERATIONS IN A WELL - The invention discloses a method comprising providing a fluid comprising a viscosifying agent in an aqueous medium; contacting the fluid with a halogenisocyanuric acid or halogenisocyanurate component; whereby the viscosity of the fluid with the halogenisocyanuric acid or halogenisocyanurate component is reduced compared to the viscosity of the fluid alone; and introducing the fluid into a well. The halogenisocyanuric acid component can be mono chloroisocyanuric acid, dichloroisocyanuric acid or trichloroisocyanuric acid. The halogenisocyanurate component can be an alkali metal monochloroisocyanurate, alkali metal dichloroisocyanurate or alkali metal trichloroisocyanurate. | 11-24-2011 |
20110306525 | AQUEOUS DISPLACEMENT FLUID INJECTION FOR ENHANCING OIL RECOVERY FROM AN OIL BEARING FORMATION - A method for enhancing recovery of crude oil from a porous subterranean formation of which the pore spaces contain crude oil and connate water comprises:—determining the Ionic Strength (Mol/l) of the connate water; and—injecting an aqueous displacement fluid having a lower Ionic Strength (Mol/l) than the connate water into the formation, which aqueous displacement fluid furthermore has an Ionic Strength below 0.15 Mol/l. FIGS. | 12-15-2011 |
20120108473 | PROCESS FOR TREATMENT OF PRODUCED WATER OBTAINED FROM AN ENHANCED OIL RECOVERY PROCESS USING POLYMERS - A process for treatment of produced water obtained from an enhanced oil recovery process from a reservoir, said water containing at least one water-soluble polymer, wherein:
| 05-03-2012 |
20120196777 | Variable Pressure Weighting Material Particles - Variable pressure weighting material particles that include a hollow, elastically deformable particle which itself comprises a wall and an internal fluid at a pressure of 15 psi to about 100 psi. The variable pressure weighting material particles generally include a hollow, elastically deformable particle that compresses during introduction into a subterranean formation and returns to substantially the same shape when removed from the subterranean formation. | 08-02-2012 |
20120245061 | ENHANCING DRAG REDUCTION PROPERTIES OF SLICK WATER SYSTEMS - Novel slick water fracturing fluid compositions are disclosed, where the compositions including with slick water fracturing compositions including a partially hydrolyzed polyacrylamide polymer system within invert emulsion and an effective amount of a friction reducer booster system, where the effective amount is sufficient to reduce a drag friction of the composition by an additional amount of at least 5% in the first 30 seconds of evaluation in high salinity and low temperature environments. | 09-27-2012 |
20130005616 | ENHANCED OIL RECOVERY PROCESS USING WATER SOLUBLE POLYMERS HAVING IMPROVED SHEAR RESISTANCE - An enhanced oil recovery process using high molecular weight water soluble polymer consisting in: —dispersing said polymer in injection brine, —and then injecting the dispersed polymer in the subterranean formation, characterized in that the high molecular weight water soluble polymer contains at least a non-ionic monomer and at least an amphiphilic monomer containing at least a side chain having an HLB above 4.5, said high molecular weight water soluble polymer having a molecular weight of more than 10 000 000. | 01-03-2013 |
20130023450 | CONTROLLED RELEASE OF SURFACTANTS FOR ENHANCED OIL RECOVERY - A controlled release composition comprising an aqueous sulfonate solution; an anionic surfactant; and a salt selected from aluminium nitrate nanohydrate, calcium chloride dehydrate, magnesium chloride hexahydrate, cobalt chloride hexahydrate, and other metal salts. Methods of delivering a controlled release of surfactants composition, the method comprising the steps of: delivering a solution into a reservoir, the solution comprising an aqueous sulfonate solution; an anionic surfactant; and a salt selected from aluminium nitrate nanohydrate, calcium chloride dehydrate, magnesium chloride hexahydrate, cobalt chloride hexahydrate, and other metal salts; and delivering water to the reservoir. | 01-24-2013 |
20130072405 | 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. | 03-21-2013 |
20130116156 | CHEMICAL SEAL RING COMPOSITION AND METHOD OF USING - Disclosed herein is a chemical seal ring composition that includes polyacrylamide crosslinked with a non-metallic crosslinker such as polylactam. Also, described in a method of forming a chemical seal ring from the chemical seal ring composition. | 05-09-2013 |
20140051609 | COMPOSITION FOR PRODUCING OIL - A method, system, and composition for producing oil from a formation utilizing an oil recovery formulation comprising a surfactant, an alkali, a polymer, and a paraffin inhibitor are provided. | 02-20-2014 |
20140087977 | HIGH WATER AND BRINE SWELL ELASTOMERIC COMPOSITIONS AND METHOD FOR MAKING AND USING SAME - Swellable compositions including at least one curable elastomer, a least one cure system, at least one high molecular weight (HMW) swelling agent and at least one low molecular weight (LMW) swelling agent. Methods for making swellable compositions including at least one curable elastomer, a least one cure system, at least one high molecular weight (HMW) swelling agent and at least one low molecular weight (LMW) swelling agent. Methods for using swellable compositions including at least one curable elastomer, a least one cure system, at least one high molecular weight (HMW) swelling agent and at least one low molecular weight (LMW) swelling agent. | 03-27-2014 |
20140329725 | Dual Retarded Acid System for Well Stimulation - A composition in the form of an emulsion having: (i) a continuous oil phase comprising: (a) an oil; (b) an emulsifier; and (ii) an internal aqueous phase comprising: (a) water; (b) acid such that the aqueous phase has an initial pH of less than about 2; (c) a viscosity-increasing agent; and (d) a crosslinker, wherein the crosslinker is selected or controlled to crosslink the viscosity-increasing agent at a pH range somewhere in a range of about 1.5 to about 6.5 and that is at least higher than the initial pH of the aqueous phase. A method of acidizing a treatment zone of a subterranean formation in a well includes the steps of: (A) forming a treatment fluid comprising such a composition; and (B) introducing the treatment fluid into a well. | 11-06-2014 |
20140329726 | Polymeric Additives for Enhancement of Treatment Fluids Comprising Viscoelastic Surfactants and Methods of Use - Polymeric additives used with viscoelastic surfactants, fluids comprising such additives and viscoelastic surfactants, and associated methods of use, are provided. In one embodiment, the methods comprise: providing a treatment fluid that comprises an aqueous base fluid, a viscoelastic surfactant, and an amphiphilic polymer, the amphiphilic polymer comprising a hydrophobic component, and a hydrophilic component comprising at least 15 monomer units; and introducing the treatment fluid into at least a portion of a subterranean formation. | 11-06-2014 |
20140364346 | VISCOUS FLUID DILUTION SYSTEM AND METHOD THEREOF - A dilution system for a hydraulic fracturing fluid, the dilution system including a dilution manifold; a hydration unit configured to provide a source of liquid; a diluent line connecting the hydration unit to the dilution manifold. A diluent flow control valve on the diluent line. A hydration tank configured to hydrate a mixed additive. A gravity-driven viscous fluid line connecting an exit of the hydration tank to the dilution manifold. A viscous fluid flow meter on the viscous fluid line; and, a viscous fluid control valve on the viscous fluid line. Also included is a method of processing a fracturing fluid. | 12-11-2014 |
20150141301 | PERACETIC ACID OIL-FIELD BIOCIDE AND METHOD - Aqueous well treatment fluid compositions with biocidal activity are disclosed comprising a polymer for modifying fluid viscosity in the aqueous fluid, an organic monocarboxylic peracid being present in an anti-microbial amount of about 1 ppm to about 1000 ppm, and a controlled amount of hydrogen peroxide also being present. Peracetic acid is the preferred peracid. The viscosity-modifying polymer in the aqueous well treatment fluid composition may serve to reduce friction in the fluid or increase fluid viscosity. A method of using such compositions is also disclosed. | 05-21-2015 |
20150299506 | COMPOSITION INCLUDING A FLUORINATED POLYMER AND A NON-FLUORINATED POLYMER AND METHODS OF MAKING AND USING THE SAME - A composition is disclosed that includes fluorinated polymer and a non-fluorinated polymer. The fluorinated polymer includes first divalent units independently represented by formula and second divalent unit independently comprising a pendent cationic, anionic, amphoteric, or amine-oxide group or a pendent poly(alkyleneoxy) segment. The non-fluorinated polymer is R | 10-22-2015 |
20150315459 | Flash Coating Treatments For Proppant Solids - Treatment methods for coated or uncoated proppants that can, among other things, control fugitive dust during typical handling procedures with typical transport equipment and/or add functional features to the proppant solid are disclosed herein. | 11-05-2015 |
20150353811 | CROSS-LINKABLE RUBBER COMPOSITION FOR SEAL MATERIAL USED AT OILFIELD OR GAS WELL AND SEAL MATERIAL - A cross-linkable rubber composition for a seal material which is used at an oilfield or gas well made of a nitrile group-containing copolymer rubber (A) which contains α,β-ethylenically unsaturated nitrile monomer units 10 to 60 wt % and has an iodine value of 120 or less, an α,β-ethylenically unsaturated carboxylic acid metal salt (B), and an organic peroxide cross-linking agent (C) is provided. Accordingly, it is possible to provide a rubber composition which is excellent in shapeability, is high in durability against hydrogen sulfide and other corrosive gases, and is suitable for application as a seal material which is used at an oilfield or gas well. | 12-10-2015 |
20160009983 | GEL COMPOSITIONS FOR HYDRAULIC FRACTURING APPLICATIONS | 01-14-2016 |
20160053166 | 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. | 02-25-2016 |
20160122622 | POLYMER COMPOSITIONS - Embodiments of a polymer composition are disclosed for use in enhancing the production of oil from a formation. In one embodiment, the composition includes a powder polymer having an average molecular weight of 0.5 to 30 Million Daltons suspended in a water soluble solvent having an HLB of greater than or equal to 8 and selected from the group of surfactants, glycol ethers, alcohols, co-solvents, and mixtures thereof, at a weight ratio of powder polymer to water soluble solvent ranging from 20:80 to 80:20. The polymer composition is substantially anhydrous. The polymer composition is hydrated in an aqueous fluid for an injection solution in less than or equal to 4 hours containing a polymer concentration ranging from 100 ppm to 50,000 ppm and having a filter ratio of less than or equal to 1.5 at 15 psi using a 1.2 μm filter. | 05-05-2016 |
20160122624 | POLYMER COMPOSITIONS - An injection solution for injecting into a subterranean reservoir to enhance production and recovery of oil from the reservoir is disclosed. In one embodiment, the injection solution is prepared by mixing a sufficient amount of a pumpable, stable and substantially anhydrous polymer suspension in an aqueous fluid for the polymer to be hydrated in less than or equal to 4 hours, resulting in the injection solution containing a polymer concentration ranging from 100 ppm to 50,000 ppm. The injection solution has a filter ratio of less than or equal to 1.5 at 15 psi using a 1.2 μm filter. The polymer suspension comprises a powder polymer having an average molecular weight of 0.5 to 30 Million Daltons suspended in a water soluble solvent having an HLB of greater than or equal to 8 and selected from a group, at a weight ratio from 20:80 to 80:20. | 05-05-2016 |
20160251570 | PROPPANTS WITH IMPROVED DUST CONTROL | 09-01-2016 |
507226000 | Sulfur is attached directly or indirectly to the acrylic acid monomer or derivative by nonionic bonding (e.g., acrylamidoalkane sulfonates, etc.) | 22 |
20090264325 | COMPOSITIONS AND METHODS FOR RECOVERING HYDROCARBON FLUIDS FROM A SUBTERRANEAN RESERVOIR - The present disclosure is directed to compositions and methods for enhanced oil recovery, for modifying the permeability of subterranean formations and for increasing the mobilization and/or recovery rate of hydrocarbon fluids present in the formations. The compositions may include, for example, expandable cross-linked polymeric microparticles having unexpanded volume average particle size diameters of from about 0.05 to about 5,000 microns and cross linking agent contents of from about 100 to about 200,000 ppm of labile cross linkers and from 0 to about 300 ppm of non-labile cross linkers that may be used in combination with other components such as, for example, a second and different polymeric microparticle, a viscosified aqueous solution, a subterranean reservoir treatment, or combinations thereof. | 10-22-2009 |
20100292110 | USE OF FLUOROCARBON SURFACTANTS TO IMPROVE THE PRODUCTIVITY OF GAS AND GAS CONDENSATE WELLS - The present invention includes composition having a nonionic, fluorinated polymeric surfactant, water and solvent. Embodiments of compositions according to the present invention are useful, for example, for recovering hydrocarbons from subterranean clastic formations. | 11-18-2010 |
20110237468 | METHODS FOR BLOCKING UNDERGROUND FORMATIONS - A process is proposed for blocking underground formations in the extraction of fossil oil and/or gas, a first step involving introducing water-absorbing particles into liquid-bearing and porous rock formations, said particles being water-swellable, crosslinked and water-insoluble polymers, said particles in the water-bearing rock formation finally preventing liquid flow through the rock layers by water absorption. This process is characterized in that the absorbing particles comprise a superabsorbent polymer with anionic and/or cationic properties and a retarded swelling action. This process, which can also be carried out in saline formation waters, is notable in that the swelling of the superabsorbents used begins no earlier than after five minutes and in that the superabsorbents are obtainable by four proposed process variants and any combination thereof. This process, which does not need a carrier liquid, is notable for its simplicity and especially the controllable retardation of the swelling action under the specific conditions of underground rock formations. | 09-29-2011 |
20120058922 | NOVEL FORMULATIONS OF WATER-SOLUBLE POLYMERS AND STABILIZING ADDITIVES FOR INJECTING A SINGLE COMPOUND USEABLE IN INJECTION FLUIDS FOR CHEMICAL ENHANCED OIL RECOVERY - Composition based on anionic polymers or water-soluble amphoteric (co)polymers suitable for viscosifying the injection fluids for oil recovery, characterized in that, before dilution with the injection fluid, it further contains at least 3 stabilizing agents selected from the group comprising oxygen reducing agents, precipitating agents, free radical scavengers, complexing agents and sacrificial agents, the said stabilizing agent being suitable for preventing the chemical degradation of the polymer once the polymer is introduced into the injection fluid. | 03-08-2012 |
20120129739 | WATER-SOLUBLE, HYDROPHOBIC ASSOCIATING COPOLYMERS - Water-soluble, hydrophobically associating copolymer comprising a monoethylenically unsaturated, water-soluble, surface-active monomer (a), and a monoethylenically unsaturated, hydrophilic monomer (b) different from monomer (a). The copolymer is prepared in the presence of a nonpolymerizable surfactant and has marked thickening properties in aqueous systems. | 05-24-2012 |
20120316090 | ENVIRONMENTALLY FRIENDLY DISPERSION SYSTEM USED IN THE PREPARATION OF INVERSE EMULSION POLYMERS - A water-in-oil emulsion composition and method of production is disclosed. The composition may comprise a monomer phase, an organic phase, at least one initiator, and an inverting phase. The monomer phase may further comprise at least one monomer, water, ammonium chloride, sodium 2-acrylamido-2-methyl-1-propanesulfonate, tetrasodium ethylenediaminetetraacetate, and at least one water soluble ethylenically unsaturated monomer. The organic phase may further comprise at least one hydrophobic solvent, lecithin, and a polyoxyethylene derivative of a sorbitan ester. The at least one monomer may be selected from the group consisting of an acrylic monomer, an acrylamide monomer, and combinations thereof. | 12-13-2012 |
20130090269 | DENDRITIC COMB-SHAPED POLYMER THICKENING AGENT, PREPARATON OF THE SAME AND APPLICATION THEREOF - The present invention relates to a dendritic comb-shaped polymer thickening agent and preparation and application thereof; it is a copolymer obtained by copolymerization of monomer (A) and monomer (B). Monomer (A) is one or more water-soluble unsaturated monomers with olefin chain, and monomer (B) is at least one monomer with the following general structure: | 04-11-2013 |
20140024562 | HIGH SOLIDS CONTENT SLURRIES, SYSTEMS AND METHODS - High solids content slurry, systems and methods. The slurry comprises a carrier fluid and a solids mixture of first, second, third and fourth particle size distribution (PSD) modes wherein the first PSD mode is at least three times larger than the second PSD mode, which is larger than the third PSD mode, which is larger than the fourth PSD mode, and wherein at least one of the second and third PSD modes is less than 3 times larger than the respective third or fourth PSD mode. The method comprises forming the slurry, positioning a screen in a wellbore and circulating the slurry through the wellbore such that the solids mixture is deposited between the screen and the wellbore. The system comprises a pump to circulate the slurry, a workstring to position the screen and means for converting the slurry to a gravel pack. | 01-23-2014 |
20140051610 | ENVIRONMENTALLY BENEFICIAL RECYCLING OF BRINES IN THE PROCESS OF REDUCING FRICTION RESULTING FROM TURBULENT FLOW - Processes are provided for reducing the hydrodynamic friction of a turbulent brine stream including, for example, the step of injecting a mixture of a finely divided free flowing friction reducing powder into the turbulent brine stream, wherein the particles of the powder have a primary particle size between 10 and 100 microns in average particle diameter, and the brine stream comprises water with at least 90,000 ppm total dissolved solids, wherein the total dissolved solids includes at least 30,000 ppm sodium cations, 10,000 ppm calcium cations, and 1,000 ppm magnesium cations, and wherein the brine has an electrical conductivity of greater than 100.0 mS/cm at 25° C. For use with a harsher brine, the particles preferably have a primary particle size between 10 and 53 microns in average particle diameter. The friction reducing powder may, for example, be a polyacrylamide polymer. | 02-20-2014 |
20140329727 | Electromagnetic Wave Treatment Method And Promoter - A method involving exposing a substance to a promoter, the promoter being made from a liquid carrier and a metal salt component, the metal salt component, having at least (i) a magnetic susceptibility above 1000 or (ii) an ionization potential below about 500 volts, or (iii) both (i) and (ii), and applying electromagnetic wave energy to the substance while the substance is in the presence of the promoter, for a period of time and at a frequency and amplification sufficient to promote the modification of at least one physical property of the substance. A related method of treating a well in a subterranean formation, a tank or a pipeline, and the well treatment promoter composition, are also described. | 11-06-2014 |
20140342952 | METHOD OF TREATING A HIGH-TEMPERATURE WELL WITH A FLUID CONTAINING A VISCOSIFIER AND A STABILIZER PACKAGE - A treatment fluid for treating a portion of a high-temperature subterranean formation comprises: a base fluid, wherein the base fluid comprises water; a viscosifier, wherein the viscosifier is a polymer, and wherein the viscosifier is thermally stable up to a temperature of 325° F.; and a stabilizer package, wherein the stabilizer package: (A) comprises a first stabilizer and a second stabilizer, wherein the first stabilizer is an oxygen scavenger and the second stabilizer is a pH adjustor; and (B) is capable of increasing the thermal stability of the viscosifier to a temperature greater than 350° F., wherein the portion of the subterranean formation has a bottomhole temperature greater than 350° F. A method of treating a high-temperature subterranean formation comprises introducing the treatment fluid into the portion of the subterranean formation. | 11-20-2014 |
20150011442 | METHOD OF TREATING A HIGH-TEMPERATURE WELL WITH A FLUID CONTAINING A VISCOSIFIER AND A STABILIZER PACKAGE - A treatment fluid for treating a portion of a high-temperature subterranean formation comprises: a base fluid, wherein the base fluid comprises water; a viscosifier, wherein the viscosifier is a polymer, and wherein the viscosifier is thermally stable up to a temperature of 325° F.; and a stabilizer package, wherein the stabilizer package: (A) comprises a first stabilizer and a second stabilizer, wherein the first stabilizer is an oxygen scavenger and the second stabilizer is a pH adjustor; and (B) is capable of increasing the thermal stability of the viscosifier to a temperature greater than 350° F., wherein the portion of the subterranean formation has a bottomhole temperature greater than 350° F. A method of treating a high-temperature subterranean formation comprises introducing the treatment fluid into the portion of the subterranean formation. | 01-08-2015 |
20150080275 | Process For Inhibition Of Sulphide Scales - The invention provides for the use of a copolymer, comprising
| 03-19-2015 |
20150148269 | SMART POLYMER FLOODING PROCESS - Design and preparation of a smart system, including a hydrophilic polymer nanoparticle as a core material and a hydrophilic-hydrophobic block copolymer as a coating nanolayer for use in a smart core-shell nanostructure flooding during enhanced oil recovery (EOR) process. The hydrophilic polymers are prepared by an inverse emulsion method. The central core of this nanostructure includes hydrophilic polymer. The nanolayer can be a surfmer. The binary properties of the shell and hydrophilic polymers increase the water viscosity in the water-oil interface and enhance oil recovery. | 05-28-2015 |
20150322333 | COMPOSITION AND METHOD FOR RECOVERING HYDROCARBON FLUIDS FROM A SUBTERRANEAN RESERVOIR - A composition including crosslinked expandable polymeric microparticles capable of hydrolysis at or below neutral pH and a method of modifying the permeability to water of a subterranean formation by introducing such compositions into the subterranean formation. This disclosure further relates to compositions and methods for the recovery of hydrocarbon fluids from a subterranean reservoir or formation subjected to CO | 11-12-2015 |
20160040057 | POLYMERS FOR ENHANCED HYDROCARBON 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. | 02-11-2016 |
20160060509 | NON-METALLIC CROSS-LINKING AGENT FOR ULTRA-HIGH TEMPERATURE FRACTURING FLUID, AND FRACTURING FLUID, PREPARATION AND USE THEREOF - The present disclosure provides a non-metallic cross-linking agent for ultra-high temperature fracturing fluids, and a fracturing fluid, the preparation and use thereof. The non-metallic cross-linking agent of the disclosure can be prepared from the following components in weight percentage: 0.1% to 0.5% of an organic aldehyde, 0.01% to 0.05% of an organic phenol, 0 to 10% of an organic alcohol, 0.05% to 0.5% of an organic acid, and the balance of water. The fracturing fluid of the disclosure can have the following advantages: low damage to the strata, low cost, good temperature resistance, and good gel-breaking performance. | 03-03-2016 |
20160083641 | SOLIDS FREE GELLABLE TREATMENT FLUIDS - Gellable treatment fluids containing an amps-acrylamide bipolymer and a suitable surfactant can be used in various subterranean operations where it is necessary for the treatment fluid to remain in a gelled state for extended periods of time at high formation temperatures. The gellable treatment fluids are thermally-stable, solids-free self-degrading treatment fluid compositions useful in fluid loss pill, kill pill, perforation pill and other gel treatment applications. | 03-24-2016 |
20160130496 | SCALE-INHIBITING COCRYSTALS FOR TREATMENT OF A SUBTERRANEAN FORMATION - The present invention relates to cocrystals including a scale-inhibiting compound, and methods of using the cocrystals for treating a subterranean formation. In various embodiments, the present invention provides a method of treating a subterranean formation including obtaining or providing a composition including cocrystals. Each cocrystal independently includes a scale-inhibiting compound and a secondary material. The method also includes placing the composition in a subterranean formation. | 05-12-2016 |
20160145484 | PACKING FLUIDS AND METHODS - Packing fluids that include (a) an aqueous solvent, and optionally one or more water-miscible organic liquids; and (b) one or more organic cationic and/or alkali metal tungstates, molybdates, and/or silicates dissolved in the solvent are disclosed. The fluid may be substantially free of salts and esters of formic acid. The disclosure further relates to methods of making and using the packing fluids. | 05-26-2016 |
20160152886 | POLYMER-ENHANCED SURFACTANT FLOODING FOR PERMEABLE CARBONATES | 06-02-2016 |
20160251564 | VISCOSIFIER FOR ENHANCED OIL RECOVERY | 09-01-2016 |