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7576042 |
Salt water stable latex cement slurries
A method of servicing a wellbore comprising preparing a cement slurry by premixing at least one latex, at least one stabilizer, and optionally water to form a homogeneous solution, further mixing...
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7576040 |
Cement compositions comprising humic acid grafted fluid loss control additives
Exemplary embodiments of the cement compositions comprise water, a cement, and a fluid loss control additive, the fluid loss control additive comprising a graft copolymer. The graft copolymer...
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7559370 |
Restricting fluid passage and novel materials therefor
Water problems in the production of oil or gas from subterranean formations is addressed by providing a method of restricting passage of a fluid from a first location to a second location in a...
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7488541 |
Superabsorbent polymer aqueous paste and coating
The present invention is directed to an aqueous superabsorbent polymer paste comprising from about 1 to about 5 wt % of superabsorbent particles and from about 95 to about 99 wt % of an aqueous...
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7398825 |
Methods of controlling sand and water production in subterranean zones
Methods for stabilizing portions of a subterranean formation and controlling the production of water from those subterranean formations. In one embodiment, the methods of the present invention...
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7304098 |
Hydrogel for use in downhole seal applications
The present invention is a composition for forming seals. The composition includes a base material and a hydrogel. The base materials is preferably an elastomer or a thermoplastic. Seals formed...
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7290960 |
Sprayable mining liner
A liner is the product of reaction of (a) a hydrophilic prepolymer bearing isocyanate groups; and (b) a water-borne polymer dispersion, the polymer bearing groups that are reactive to isocyanate...
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7270879 |
Particulate material containing thermoplastics and methods for making and using the same
Disclosed herein is a particle comprising a particulate substrate; and a thermoplastic elastomer present on or in the substrate as an amount sufficient to improve the dust suppression of the...
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7270184 |
Method of well treatment
The invention provides a method of well treatment comprising introducing into the matrix surrounding a hydrocarbon well bore hole an emulsion the discontinuous phase of which comprises a...
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7256227 |
Polymer modified gypsum membrane and uses therefor
A composition which is applied to substrate surfaces to form a membrane to provide structural reinforcement thereto and prevent the release of gases and moisture from the substrate. The composition...
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7244492 |
Soluble fibers for use in resin coated proppant
Coated particle substrates having a coating of resin and/or water soluble polymers and soluble, fibrous material are provided for use in subterranean formations. The coated particle substrate...
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7238749 |
Two-component mortar composition and its use
A two-component mortar composition is described with a curable resin component containing at least one free radical-polymerizable resin, fillers, reactive diluents, solvents, accelerators and/or...
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7238733 |
Storable water-silica suspensions and methods
Storable water-silica suspensions and methods of cementing well bores are provided. The storable water-silica suspensions are basically comprised of water, silica and an effective amount of a...
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7188673 |
Process for reducing the production of water in oil wells
A process is described for reducing the production of water in oil wells which comprises the injection into the formation around the well of an aqueous solution of one or more polymers selected...
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7150787 |
Polymer-modified gypsum composition
A composition including two components is provided. When the two components are admixed in the method of the invention a polymer-modified gypsum composition is provided. The admixture exhibits a...
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7150319 |
Method for reducing or completely eliminating water influx in an underground formation, and crosslinkable copolymers for implementing said method
A method for reducing or completely eliminating water influx in an oil or natural gas borehole includes introducing in the borehole an aqueous solution of a copolymer comprising: A) 40–98 wt. %...
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7138446 |
Elastomeric admixtures for improving cement elasticity
A method and cementing composition for sealing a subterranean zone penetrated by a well bore, wherein the cementing composition comprises a mixture of cementitious material, acrylonitrile butadiene...
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7128148 |
Well treatment fluid and methods for blocking permeability of a subterranean zone
The present invention provides a method and treatment fluid for blocking the permeability of an elevated-temperature zone in a reservoir of a subterranean formation penetrated by a wellbore, the...
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7114568 |
Hydrophobically modified polymers for a well completion spacer fluid
A method and composition is provided for a relative permeability modifier for use with aqueous well treatment fluids that comprises a hydrophobically modified water soluble polymer or a...
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7063153 |
Methods and compositions for cementing wells
Methods of cementing subterranean zones penetrated by well bores and well cement compositions. A well cement composition of the invention basically comprises a hydraulic cement, water in an amount...
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7037956 |
Water-soluble resin, process for its production and water-soluble resin composition
A water-soluble resin composition comprising a water-soluble resin and a colorant, which copolymer has a weight average molecular weight of at least 8,000 and is prepared by polymerizing an...
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6984705 |
Composition and method for recovering hydrocarbon fluids from a subterranean reservoir
A composition comprising expandable cross linked polymeric microparticles having an unexpanded volume average particle size diameter of from about 0.05 to about 10 microns and a cross linking agent...
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6932158 |
Well plug additive, well plug treatment fluid made therefrom, and method of plugging a well
For well plug treatment to plug an abandoned well, a well plug additive including a dry mixture of water soluble crosslinkable polymer, a crosslinking agent, and filter aid, and optionally, a...
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6881708 |
Compositions for solving lost circulation problems
A method and composition is provided for sealing a subterranean zone penetrated by a well bore and restoring lost circulation, wherein the composition basically comprises a mixture of latex,...
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6855201 |
Cementing compositions
A cement composition is basically comprised of a hydraulic cement, water in an amount sufficient to form a pumpable slurry and a fluid loss control polymer additive comprised of 69 weight % of the...
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6843846 |
Methods and compositions for cementing subterranean zones
Methods and compositions for cementing subterranean zones penetrated by well bores are provided. The methods are basically comprised of the steps of providing a cement composition which comprises a...
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6715552 |
Well cementing methods and compositions
Methods of cementing subterranean zones penetrated by well bores and well cement compositions are provided. A well cement composition of the invention is basically comprised of a hydraulic cement,...
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6710107 |
Cement slurries comprising hydrophobic polymers
The present invention relates to a cement slurry set in a wellbore. The slurry comprises cement, at least one mineral filler, water and a determined amount of at least one hydrophobically modified...
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6656994 |
Use of polysulfide-free preparations as an additive for loam or clay-based construction materials
The use is described of polysulfide-free preparations comprising, based on solids content, from 40 to 99.5% by weight of at least one water-dispersible copolymer and from 0.5 to 10% by weight of at...
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6632527 |
Composite proppant, composite filtration media and methods for making and using same
Composite particles made of a binder and filler material are provided for use in subterranean formations. The filler is finely divided mineral and optional fiber. The particles are proppants useful...
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6593402 |
Resilient well cement compositions and methods
The present invention provides improved compositions and methods for sealing pipe in a well bore. The compositions which harden into highly resilient solid masses having high strengths are...
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6586497 |
Transport of solid particulates
A method is provided for incorporating a foaming agent into mixtures of particulates and then forming a foam within the mixture to increase the flowability of the particulates. A method is also...
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6581701 |
Methods for reducing lost circulation in wellbores
This invention discloses methods for reducing lost circulation in wellbores. The invention utilizes certain selected water swellable polymers that swell at a rate slow enough to reach the lost...
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6552121 |
Alkali silicate-polyisocyanate composites
A process for preparing alkali silicate—polyisocyanate composites without catalyst separation. The process involves blending a catalyst and a polyisocyanate to form a first component, and...
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6518224 |
Drilling fluids
The invention is a novel drilling fluid additive comprising particles of elastomer which are capable of swelling upon contact with a hydrocarbon fluid. The swelling of the elastomer is gradual,...
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6503870 |
Sealing subterranean zones
The present invention provides improved compositions and methods of using the compositions for sealing subterranean zones. One composition of the invention is comprised of water, a silane coupling...
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6455605 |
Foamable composition exhibiting instant thixotropic gelling
The invention relates to a foamable composition comprising at least two parts. The first part comprises a polyol, a thixotropic gelling agent, a blowing agent, a urethane reaction catalyst and a...
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6450260 |
Sand consolidation with flexible gel system
Herein is described a method of consolidating a subterranean formation or repairing a gravel pack, comprising (i) providing a consolidating fluid, wherein the consolidating fluid comprises a gel...
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6448311 |
Cement fluid loss additive
A novel method for making improved cement fluid loss additives comprising copolymers of acrylamide having desirable viscosity and fluid loss control properties. The method combines (1) the use of...
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6441054 |
Air management in cementitious mixtures having plasticizer and a clay-activity modifying agent
An exemplary surface active agent admixture composition of the invention comprises (1) a first surface active agent comprising a betaine, an alkyl or aryl or alkylaryl sulfonate, or mixture...
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6387986 |
Compositions and processes for oil field applications
Encapsulated crosslinking agents and gel-forming compositions are provided that can be utilized in oil field applications. Processes for producing said encapsulated crosslinking agents and said...
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6367549 |
Methods and ultra-low density sealing compositions for sealing pipe in well bores
The present invention provides methods and ultra-low density sealing compositions for sealing pipe in well bores penetrating formations which readily fracture at low hydrostatic pressures. A method...
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6328105 |
Proppant containing bondable particles and removable particles
An improved proppant and a method of increasing the conductivity of the fractures of subterranean formations is described. The proppant contains a mixture of bondable particles and removable...
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6288133 |
Foaming urethane composition and methods of using such compositions
This invention relates to a foamable composition comprising at least two parts. More specifically, the first part comprises at least one polyol, at least one gelling agent, and at least one blowing...
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6277900 |
Well cementing aids
The present invention relates to copolymers consisting of (a) 1-99% by weight of structural units of the formula (1) ##STR1## where R 1 is hydrogen or methyl, R 4 is C 1 -C 22 -alkylene,...
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6268406 |
Well cementing methods using compositions containing liquid polymeric additives
Methods of cementing subterranean zones penetrated by a well bores are provided. In accordance with the methods, a cement composition is prepared comprised of a hydraulic cement, sufficient water...
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6235809 |
Multi-functional additive for use in well cementing
This invention relates to a cement composition for cementing oil, gas and geothermal wells comprising: a cement; and an additive comprising a blend of a sodium silicate; water; a carrageenan...
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6207808 |
Catalytic method for the preparation of lignin phenol surfactants in organic solvents
A method of making surfactants from lignin is disclosed by reducing lignin in the presence of a metal oxide or iron based catalyst in an organic hydrogen donor solvent to produce lignin phenol and...
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6189615 |
Application of a stabilized polymer gel to an alkaline treatment region for improved hydrocarbon recovery
A process is provided for reducing the permeability of or fluid mobility within a carbonate-containing treatment region in or proximate to a hydrocarbon-bearing formation below an earthen surface...
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6187839 |
Methods of sealing compositions and methods
The present invention provides methods of sealing subterranean zones using high density sealing compositions. The methods are basically comprised of introducing a sealing composition into the...
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