Novel additive compositions and methods of improving injectivity of an aqueous composition into a disposal reservoir during a water disposal operation.
A method of controlling wax deposition within a fluid, the method comprising admixing an additive composition with the fluid, wherein the additive composition comprises one or more biosurfactants and one or more additional additives independently selected from (i) a sulfonic acid or salt thereof, (ii) a polymeric wax inhibitor and (iii) an alkoxylated alcohol and/or amine compound.
C10L 1/196 - Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds derived from monomers containing a carbon-to-carbon unsaturated bond and a carboxyl group or salts, anhydrides or esters thereof
C10L 1/198 - Macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
C10L 1/238 - Macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
Novel additive compositions and methods of improving injectivity of an aqueous composition into a disposal reservoir during a water disposal operation.
C02F 1/68 - Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
C02F 5/08 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
C02F 103/10 - Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
A method of controlling wax deposition within a fluid, the method including admixing an additive composition with the fluid, wherein the additive composition includes one or more biosurfactants and one or more additional additives independently selected from (i) a sulfonic acid or salt thereof, (ii) a polymeric wax inhibitor and (iii) an alkoxylated alcohol and/or amine compound.
A method of treating a subterranean formation, for example a subterranean formation susceptible to formation of a undesirable gel-like goo. The method include contacting the formation with a fluid (A) having a polymer (PP) which includes a pendent group which includes a moiety
A method of treating a subterranean formation, for example a subterranean formation susceptible to formation of a undesirable gel-like goo. The method include contacting the formation with a fluid (A) having a polymer (PP) which includes a pendent group which includes a moiety
O—S═O (I)
wherein the sulphur atom of the moiety is covalently bonded, optionally via a linking atom or group, to the backbone of the polymer.
C09K 8/528 - Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
C09K 8/68 - Compositions based on water or polar solvents containing organic compounds
C09K 8/467 - Compositions for cementing, e.g. for cementing casings into boreholesCompositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
E21B 21/06 - Arrangements for treating drilling fluids outside the borehole
7.
ADDITIVES AND METHODS, COMPOSITIONS AND USES RELATING THERETO
C09K 8/467 - Compositions for cementing, e.g. for cementing casings into boreholesCompositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
C09K 8/68 - Compositions based on water or polar solvents containing organic compounds
01 - Chemical and biological materials for industrial, scientific and agricultural use
03 - Cosmetics and toiletries; cleaning, bleaching, polishing and abrasive preparations
Goods & Services
(1) Chemicals and chemical formulations for use in water treatment; chemicals and chemical formulations for use in the cleaning, handling, pumping, transfer and storage of polymers; chemicals and chemical formulations for use as mitigation agents; chemicals and chemical formulations for use in hard surface cleaning applications; chemicals and chemical formulations for use in dispersing hydrocarbons, including for dispersing gasoline, xylene, toluene, benzene, petroleum distillates, kerosene, diesel fuel, jet fuels, motor oil and crude oils; chemicals and chemical formulations for use as a paraffin dispersant; chemicals and chemical formulations for use as an emulsifier; chemicals and chemical formulations for use as a degreaser; chemicals and chemical formulations for use in tank cleaning, refinery cleaning, and industrial plant cleaning.
(2) Hard surface cleaner for use in industrial and institutional applications.
9.
COMPOSITIONS COMPRISING POLYMER, SCALE INHIBITOR AND QUATERNARY AMMONIUM COMPOUND, METHOD AND USES.
An aqueous formulation for use in slick water fracturing, water treatment, enhanced oil recovery, drilling, erosion control, dust abatement or mining flotation operations comprises: (i) one or more than one polymer (AA) which is a water-soluble polymer; (ii) water; (iii) one or more than one quaternary ammonium compound; and (iv) one or more than one scale inhibitor.
C02F 5/08 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
C09K 3/22 - Materials not provided for elsewhere for dust-laying or dust-absorbing
C09K 8/588 - Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers
C09K 8/68 - Compositions based on water or polar solvents containing organic compounds
C09K 8/88 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds
An aqueous formulation for use in slick water fracturing, water treatment, enhanced oil recovery, drilling, erosion control, dust abatement or mining flotation operations includes (i) one or more than one polymer (AA) which is a water-soluble polymer; (ii) water; (iii) one or more than one quaternary ammonium compound; and (iv) one or more than one scale inhibitor.
01 - Chemical and biological materials for industrial, scientific and agricultural use
03 - Cosmetics and toiletries; cleaning, bleaching, polishing and abrasive preparations
Goods & Services
Chemicals and chemical formulations for use in water treatment; chemicals and chemical formulations for use in the cleaning, handling, pumping, transfer and storage of polymers; chemicals and chemical formulations for use as mitigation agents; chemicals and chemical formulations for use in hard surface cleaning applications; chemicals and chemical formulations for use in dispersing hydrocarbons, including for dispersing gasoline, xylene, toluene, benzene, petroleum distillates, kerosene, diesel fuel, jet fuels, motor oil and crude oils; chemicals and chemical formulations for use as a paraffin dispersant; chemicals and chemical formulations for use as an emulsifier; chemicals and chemical formulations for use as a degreaser; chemicals and chemical formulations for use in tank cleaning, refinery cleaning, and industrial plant cleaning Hard surface cleaner for use in industrial and institutional applications
An aqueous formulation for slick water fracturing comprises: (i) a polymer (AA) which includes acrylamido repeat units and may be a polyacrylamide; (ii) water; (iii) a quaternary ammonium compound.
An aqueous formulation for slick water fracturing includes (i) a polymer (AA) which includes acrylamido repeat units and may be a polyacrylamide; (ii) water; and (iii) a quaternary ammonium compound.
C08J 3/05 - Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media from solid polymers
A method of treating a subterranean formation, for example a subterranean formation susceptible to formation of a undesirable gel-like goo ;- is-described. The method includecomprises contacting the formation with a fluid (A) havingcomprising a polymer (PP) which includes a pendent group which includes a moiety
O-S=0 (I) wherein the sulphur atom of the moiety is covalently bonded, optionally via a linking atom or group, to the backbone of the polymer.
A method of preparing a fracturing fluid (YY) is described. The method may comprise: (i) selecting an anionic surfactant (AS), for example an anionic sulphonate surfactant; (ii) contacting the anionic surfactant (AS) with a fracturing fluid (XX) or with a precursor of said fracturing fluid (XX), wherein fracturing fluid (XX) may incorporate a friction reducer formulation.
A method of preparing a fracturing fluid for hydraulic fracturing in unconventional reservoirs such as coal beds, sandstones, and shales. The method includes selecting an anionic surfactant, such as an anionic sulphonate surfactant; and contacting the anionic surfactant with a fracturing fluid or with a precursor of said fracturing fluid. The fracturing fluid may further include friction reducing polymers and a booster formulation that provides enhanced polymer performance for increased friction reduction as well as faster polymer dissolution in the fracturing fluid.
C09K 8/92 - Compositions for stimulating production by acting on the underground formation characterised by their form or by the form of their components, e.g. encapsulated material
E21B 43/16 - Enhanced recovery methods for obtaining hydrocarbons
E21B 43/26 - Methods for stimulating production by forming crevices or fractures
01 - Chemical and biological materials for industrial, scientific and agricultural use
Goods & Services
Polymer compositions used in the manufacture of industrial oilfield and agricultural goods; polymer compositions for use as friction reducers used in the manufacture of industrial oilfield and agricultural goods; water-based polymer compositions for use as friction reducers or viscosity enhancement used in the manufacture of industrial oilfield and agricultural goods; polymer compositions, including those in water-based form, for use in the process of fracturing in oil fields; polymer compositions for use as friction reducers in the treatment and management of water, and for use in agriculture; viscose (acrylamide polymer or copolymer) chemicals; polymers and polymeric additives for reducing the friction of liquids used in the manufacture of industrial oilfield and agricultural goods; polymers and polymeric additives for use as friction reducers and for enhancing viscosity used in the manufacture of industrial oilfield and agricultural goods
18.
Method and materials for hydraulic fracturing with delayed crosslinking of gelling agents
A non-aqueous slurry contains a non-aqueous liquid immiscible in water (such as a hydrocarbon based oil) having dispersed therein a crosslinking agent (such as a borate crosslinking agent) and an oil-wetting surface active material. The non-aqueous slurry further contains an organophilic clay. The non-aqueous slurry, when used in an aqueous fracturing fluid, provides crosslinking delay between the crosslinking agent and a hydratable polymer, such as guar or guar derivatives. The aqueous fracturing fluid provides an enhanced fracture network after being pumped into a well.
C09K 8/68 - Compositions based on water or polar solvents containing organic compounds
C09K 8/584 - Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
C09K 8/588 - Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers
E21B 43/26 - Methods for stimulating production by forming crevices or fractures
C09K 8/60 - Compositions for stimulating production by acting on the underground formation
C09K 8/90 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
Formulations for fracturing fluids that include (i) a fluid (D) including an oil phase in which the fluid (D) is an inverse emulsion including a water-soluble polymer (B) and said oil phase; and (ii) particles of a water-soluble polymer (C), which are different than water-soluble polymer (B), wherein the particles of polymer (C) are dispersed in said oil phase as solid discrete particles. The fluid (D) includes at least 15wt % polymer (B).
A method of treating a subterranean formation, for example a subterranean formation susceptible to formation of a undesirable gel-like goo,is described. The method comprises contacting the formation with a fluid (A) comprising a polymer (PP) which includes a pendent group which includes a moiety wherein the sulphur atom of the moiety is covalently bonded, optionally via a linking atom or group, to the backbone of the polymer.
Formulations for fracturing fluids are prepared by mixing a granulated water-soluble friction reducing polymer with an invert polymer emulsion friction reducing formulation optionally in the presence of an organophilic clay, without the need for specialized field equipment. The mixture can be dosed into water to produce a fracturing fluid which is found to be technically highly advantageous and cost-effective.
A method of treating a subterranean formation penetrated by a well-bore, for example to facilitate fracturing of the formation, comprises the steps of: (i) selecting a treatment fluid comprising a diverting agent (A) in a flaked form, for example guar gum in a flaked form. (ii) introducing the treatment fluid into the subterranean formation via the well-bore to plug a region of the formation. Thereafter, the formation may be fractured or re-fractured.
C09K 8/514 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
C09K 8/512 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds containing cross-linking agents
C09K 8/68 - Compositions based on water or polar solvents containing organic compounds
C09K 8/80 - Compositions for reinforcing fractures, e.g. compositions of proppants used to keep the fractures open
E21B 33/138 - Plastering the borehole wallInjecting into the formation
E21B 43/267 - Methods for stimulating production by forming crevices or fractures reinforcing fractures by propping
A method of treating a subterranean formation penetrated by a well-bore comprises the step of introducing a slurry or treatment fluid into the subterranean formation via the well-bore to plug a region of the well-bore, wherein said slurry or treatment fluid includes a diverting agent diverting agent which is suitably polylactic acid (PLA)and an additive (herein referred to as an "imbibition additive") which is suitably an acetoacetate.The diverting agent and imbibition additive interact such that the imbibition additive causes swelling of the diverting agent and/or increases the susceptibility of the diverting agent to degradation in use.
C09K 8/68 - Compositions based on water or polar solvents containing organic compounds
C09K 8/88 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds
C09K 8/90 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
A method of treating a subterranean formation penetrated by a well-bore comprises: (i) preparing a slurry in a process which comprises the steps of: (a) preparing a pre-composition which comprises an oil and one or more organic polymers suspended in the oil; and (b) contacting the pre-composition with water and a diverting agent; or (ii) selecting a slurry prepared as described in step (i); and (iii) optionally contacting the slurry with an aqueous formulation thereby to prepare a treatment fluid; (iv) introducing the slurry or treatment fluid into the subterranean formation via the well-bore to plug a region of the formation. Preferred embodiments relate to aqueous, high density slurry formulations comprising a high concentration of diverting agent particulate, for example multi-sized polylactic acid (PLA).
C09K 8/68 - Compositions based on water or polar solvents containing organic compounds
C09K 8/88 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds
C09K 8/90 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
25.
Formulations comprising recovered water and a viscosifier and associated methods
High viscosity fracturing fluids for fracturing a subterranean formulation are prepared by: (i) selecting recovered water; (ii) contacting said recovered water with a viscosifying agent, wherein said viscosifying agent is selected from fenugreek gum, tara gum, locust bean gum, guar gum and derivatives of the aforesaid; (iii) contacting said recovered water with one or more other additives for example with a cross-linking agent (A) for cross-linking said viscosifying agent, wherein contact of said recovered water with cross-linking agent (A) takes place when the pH of said recovered water is less than pH 6.5; (iv) adjusting the pH to pH 6.5-8.8.
C09K 8/68 - Compositions based on water or polar solvents containing organic compounds
C09K 8/528 - Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
C09K 8/90 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
C09K 8/88 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds
C09K 8/84 - Compositions based on water or polar solvents
C09K 8/66 - Compositions based on water or polar solvents
26.
Method of fracturing with delayed crosslinking of gelling agents
A non-aqueous slurry contains a non-aqueous liquid immiscible in water (such as a hydrocarbon based oil) having dispersed therein a crosslinking agent (such as a borate crosslinking agent) and an oil-wetting surface active material. The non-aqueous slurry further contains an organophilic clay. The non-aqueous slurry, when used in an aqueous fracturing fluid, provides crosslinking delay between the crosslinking agent and a hydratable polymer, such as guar or guar derivatives. The aqueous fracturing fluid provides an enhanced fracture network after being pumped into a well.
E21B 43/26 - Methods for stimulating production by forming crevices or fractures
C09K 8/584 - Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
C09K 8/588 - Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers
C09K 8/60 - Compositions for stimulating production by acting on the underground formation
C09K 8/68 - Compositions based on water or polar solvents containing organic compounds
C09K 8/62 - Compositions for forming crevices or fractures
C09K 8/90 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
High viscosity fracturing fluids for fracturing a subterranean formulation are prepared by: (i)selecting recovered water; (ii)contacting said recovered water with a viscosifying agent,wherein said viscosifying agent is selected from fenugreek gum, tara gum, locust bean gum, guar gum and derivatives of the aforesaid; (iii)contacting said recovered water with one or more other additives for example with a cross-linking agent (A) for cross-linking said viscosifying agent, wherein contact of said recovered water with cross-linking agent (A) takes place when the pH of said recovered water is less than pH 6.5; (iv)adjusting the pH to pH 6.5-8.8.
C09K 8/528 - Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
C09K 8/66 - Compositions based on water or polar solvents
C09K 8/68 - Compositions based on water or polar solvents containing organic compounds
C09K 8/84 - Compositions based on water or polar solvents
C09K 8/88 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds
C09K 8/90 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
28.
METHOD FOR MAKING A TREATMENT FLUID COMPRISING A DIVERTING AGENT IN FLAKE FORM, AND METHOD OF TREATING A WELL
A method of treating a subterranean formation penetrated by a well-bore, for example to facilitate fracturing of the formation, comprises the steps of: (i) selecting a treatment fluid comprising a diverting agent (A) in a flaked form, for example guar gum in a flaked form. (ii) introducing the treatment fluid into the subterranean formation via the well-bore to plug a region of the formation. Thereafter, the formation may be fractured or re-fractured.
C09K 8/512 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds containing cross-linking agents
C09K 8/514 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
C09K 8/516 - Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls characterised by their form or by the form of their components, e.g. encapsulated material
C09K 8/68 - Compositions based on water or polar solvents containing organic compounds
C09K 8/70 - Compositions for forming crevices or fractures characterised by their form or by the form of their components, e.g. foams
C09K 8/88 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds
C09K 8/90 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
C09K 8/92 - Compositions for stimulating production by acting on the underground formation characterised by their form or by the form of their components, e.g. encapsulated material
Formulations for fracturing fluids are prepared by mixing a granulated water-soluble friction reducing polymer with an invert polymer emulsion friction reducing formulation optionally in the presence of an organophilic clay, without the need for specialized field equipment. The mixture can be dosed into water to produce a fracturing fluid which is found to be technically highly advantageous and cost-effective.
C09K 8/68 - Compositions based on water or polar solvents containing organic compounds
A61K 8/81 - Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
A non-aqueous slurry contains a non-aqueous liquid immiscible in water (such as a hydrocarbon based oil) having dispersed therein a crosslinking agent (such as a borate crosslinking agent) and an oil-wetting surface active material. The non-aqueous slurry further contains an organophilic clay. The non-aqueous slurry, when used in an aqueous fracturing fluid, provides crosslinking delay between the crosslinking agent and a hydratable polymer, such as guar or guar derivatives. The aqueous fracturing fluid provides an enhanced fracture network after being pumped into a well.
C09K 8/68 - Compositions based on water or polar solvents containing organic compounds
C09K 8/90 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
C09K 8/584 - Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
C09K 8/588 - Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers
C09K 8/60 - Compositions for stimulating production by acting on the underground formation
A non-aqueous slurry contains a non-aqueous liquid immiscible in water (such as a hydrocarbon based oil) having dispersed therein a crosslinking agent (such as a borate crosslinking agent) and an oil-wetting surface active material. The non-aqueous slurry further contains an organophilic clay. The non-aqueous slurry, when used in an aqueous fracturing fluid, provides crosslinking delay between the crosslinking agent and a hydratable polymer, such as guar or guar derivatives. The aqueous fracturing fluid provides an enhanced fracture network after being pumped into a well.
C09K 8/60 - Compositions for stimulating production by acting on the underground formation
B01F 3/12 - Mixing, e.g. dispersing, emulsifying, according to the phases to be mixed liquids with solids
C09K 8/68 - Compositions based on water or polar solvents containing organic compounds
C09K 8/88 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds
C09K 8/90 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
A method of preparing a fracturing fluid (YY) is described. The method may comprise: (i) selecting an anionic surfactant (AS), for example an anionic sulphonate surfactant; (ii) contacting the anionic surfactant (AS) with a fracturing fluid (XX) or with a precursor of said fracturing fluid (XX), wherein fracturing fluid (XX) may incorporate a friction reducer formulation.
High viscosity fracturing fluids for fracturing a subterranean formulation are prepared by: (i)selecting recovered water; (ii)contacting said recovered water with a viscosifying agent,wherein said viscosifying agent is selected from fenugreek gum, tara gum, locust bean gum, guar gum and derivatives of the aforesaid; (iii)contacting said recovered water with one or more other additives for example with a cross-linking agent (A) for cross-linking said viscosifying agent, wherein contact of said recovered water with cross-linking agent (A) takes place when the pH of said recovered water is less than pH 6.5; (iv)adjusting the pH to pH 6.5-8.8.
C09K 8/528 - Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
C09K 8/66 - Compositions based on water or polar solvents
C09K 8/68 - Compositions based on water or polar solvents containing organic compounds
C09K 8/84 - Compositions based on water or polar solvents
C09K 8/88 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds
C09K 8/90 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
An aqueous formulation for slick water fracturing comprises: (i) a polymer (AA) which includes acrylamido repeat units and may be a polyacrylamide; (ii) water; (iii) a quaternary ammonium compound.
An aqueous formulation for use in slick water fracturing, water treatment, enhanced oil recovery, drilling, erosion control, dust abatement or mining flotation operations comprises: (i) one or more than one polymer (AA) which is a water-soluble polymer; (ii) water; (iii) one or more than one quaternary ammonium compound; and (iv) one or more than one scale inhibitor.
C02F 5/08 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
C09K 3/22 - Materials not provided for elsewhere for dust-laying or dust-absorbing
C09K 8/528 - Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
C09K 8/588 - Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers
C09K 8/68 - Compositions based on water or polar solvents containing organic compounds
C09K 8/88 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds
36.
METHOD AND MATERIALS FOR HYDRAULIC FRACTURING WITH DELAYED CROSSLINKING OF GELLING AGENTS
A non-aqueous slurry contains a non-aqueous liquid immiscible in water (such as a hydrocarbon based oil) having dispersed therein a crosslinking agent (such as a borate crosslinking agent) and an oil-wetting surface active material. The non-aqueous slurry further contains an organophilic clay. The non-aqueous slurry, when used in an aqueous fracturing fluid, provides crosslinking delay between the crosslinking agent and a hydratable polymer, such as guar or guar derivatives. The aqueous fracturing fluid provides an enhanced fracture network after being pumped into a well.
C08J 3/24 - Crosslinking, e.g. vulcanising, of macromolecules
C09K 8/584 - Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
C09K 8/68 - Compositions based on water or polar solvents containing organic compounds
C09K 8/80 - Compositions for reinforcing fractures, e.g. compositions of proppants used to keep the fractures open
37.
FORMULATIONS FOR USE IN FRACTURING FLUIDS AND METHODS THEREOF
Formulations for fracturing fluids are prepared by mixing a granulated water-soluble friction reducing polymer with an invert polymer emulsion friction reducing formulation optionally in the presence of an organophilic clay, without the need for specialized field equipment. The mixture can be dosed into water to produce a fracturing fluid which is found to be technically highly advantageous and cost-effective.
A61K 8/81 - Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
A method of treating a subterranean formation, for example a subterranean formation susceptible to formation of a undesirable gel-like goo,is described. The method comprises contacting the formation with a fluid (A) comprising a polymer (PP) which includes a pendent group which includes a moiety wherein the sulphur atom of the moiety is covalently bonded, optionally via a linking atom or group, to the backbone of the polymer.
