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8183183 |
Method of treating a wellbore at high temperature in contact with carbon dioxide
A method for treating a subterranean formation is made of steps of providing a composition comprising a carrier fluid, a polymer viscosifying agent, carbon dioxide and a formate salt or formic...
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8096360 |
Alkaline β-mannanase containing compositions useful for the hydrolysis of guar in high pH environments and methods related thereto
Methods and compositions of fracturing formations are provided. The fracturing fluid includes an enzyme breaker that decreases the viscosity of the fracturing fluid over time. The enzyme breaker...
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8022015 |
Method of fracturing with phenothiazine stabilizer
Compositions and methods of treating high temperature subterranean formations of up to about 500° F. (260° C.) are provided. The compositions and methods utilize a high molecular weight synthetic c...
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7987912 |
Reversible polymeric gelation for oilfield applications
A subterranean location accessed via a wellbore is treated with an oilfield fluid containing a viscosifying agent which is a polymer and a cross-linking agent which can undergo the Diels-Alder...
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7947631 |
Gelled hydrocarbons for oilfield processes and methods of use
Gelled liquid hydrocarbons and methods for gelling hydrocarbons and treating subterranean wellbores employ a phosphorus compound of the formula: wherein, X is a straight chained alkyl or alkoxy...
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7878248 |
System, method, and apparatus for post-fracture treatment
A method includes hydraulically fracturing a subterranean formation with a first treatment fluid and allowing the hydraulic fracture to close. The method includes preparing a second treatment fluid...
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7857055 |
High temperature fracturing fluids and method of use
A treatment fluid for treating a subterranean formation is formed from an aqueous solution of a polysaccharide, a polyacrylamide, a crosslinking agent, which may be a Group 4 transition metal...
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7851417 |
Process to prepare borozirconate solution and use as cross-linker in hydraulic fracturing fluids
A process to prepare a stable solution of a borozirconate complex is disclosed and use of the solution in oil field applications such as hydraulic fracturing and plugging of permeable zones. The...
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7814980 |
Micro-crosslinked gels and associated methods
Methods of forming and utilizing micro-crosslinked gels are disclosed, including a method comprising: providing a micro-crosslinked gel that comprises micro-domains; and placing the...
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7798228 |
Liquid breaker for acid fracturing fluids
Liquid breakers can be used in methods and compositions for acid fracturing formations. The fracturing fluid includes a liquid breaker that decreases the viscosity of the fracturing fluid over...
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7767630 |
Method of treating a well with a gel stabilizer
The present invention relates to the use of chalcogen heterocyclic electron donating compounds as thermal decomposition reduction additives for gels used in well treatment fluids such as drilling...
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7748451 |
Methods for improving low-quality proppant and method of using low-quality proppant in subterranean operations
The present invention relates to improved low-quality particulates and methods of making such improved particulates. A method of treating a portion of a subterranean formation, comprising providing...
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7748452 |
Polymeric microspheres as degradable fluid loss additives in oilfield applications
A method of plugging a fracture in a subterranean formation which includes placing into the fracture a composition comprising microspheres or microbeads, wherein the microspheres are created by...
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7735558 |
Crosslinked acids comprising derivatized xanthan and subterranean acidizing applications
Many methods are provided herein including, in one embodiment, a method comprising: providing a fluid that comprises an acid, crosslinked oxidized xanthan, and optionally, a base fluid; placing the...
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7730952 |
Hydraulic fracturing methods using cross-linking composition comprising zirconium triethanolamine complex
A method for hydraulically fracturing a subterranean formation comprises introducing into the formation a cross-linking composition which comprises a zirconium triethanolamine complex, a...
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7732384 |
Solid borozirconate and borotitanate cross-linkers
A process is provided to prepare solid borozirconate and solid borotitanate cross-linkers, which comprises contacting zirconium or titanium complex with alkanolamine at particular mole ratios of...
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7713917 |
Thermal insulation compositions containing organic solvent and gelling agent and methods of using the same
A thermal insulating composition containing an organic solvent of low thermal conductivity and a gelling agent hydratable in the solvent is useful for controlling heat transfer from a production...
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7690429 |
Methods of using a swelling agent in a wellbore
In an embodiment, a sealant composition comprising a swelling agent is displaced into a wellbore penetrating a subterranean formation to maintain isolation of the formation. The sealant composition...
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7625846 |
Application of degradable polymers in well fluids
Degradable polylactic or polyhydroxyalkanoate polymers may be used to viscosify aqueous fluids for use in wells. Sand control screen or liner can be coated with a solid degradable polymer during...
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7584793 |
Method for treating subterranean formation
A method is provided for treating a subterranean formation penetrated by a well bore comprising the steps of: a) forming a phosphate ester gelled hydrocarbon fracturing fluid comprising a liquid...
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7572757 |
Method of treating a well with a gel stabilizer
The present invention relates to the use of chalcogen heterocyclic electron donating compounds as thermal decomposition reduction additives for gels used in well treatment fluids such as drilling...
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7497263 |
Method and composition of preparing polymeric fracturing fluids
In the presence of certain polyols, a guar gum or similar polysaccharide thickener solution is boron crosslinked before achievement of complete hydration of the thickener, without compromising the...
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7445044 |
Polymer mixtures for crosslinked fluids
Treatment fluids comprising gelling agents that comprise crosslinkable polymers and certain biopolymers, and methods of use in subterranean operations, are provided. In one embodiment, the present...
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7413016 |
***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Polymer mixtures for crosslinked fluids
Treatment fluids comprising gelling agents that comprise crosslinkable polymers and certain biopolymers, and methods of use in subterranean operations, are provided. In one embodiment, the present...
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7395863 |
Method of treating a subterranean formation with an oil-based composition containing a polysaccharide-based water-superabsorbent material
A well treating composition containing a polysaccharide-based water-superabsorbent material has particularly applicability as a thermal insulating, fracturing or acid stimulation fluid. The...
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7387161 |
Determination of well shut-in time for curing resin-coated proppant particles
A laboratory test method employs maximum acoustic wave velocity to determine cure time of a sample of curable resin-coated proppant (CRCP) that are packed in a pressurized chamber to simulate...
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7380601 |
Degradable fiber systems for stimulation
A method for minimizing the amount of metal crosslinked viscosifier necessary for treating a wellbore with proppant or gravel is given. The method includes using fibers to aid in transporting,...
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7353876 |
Self-degrading cement compositions and methods of using self-degrading cement compositions in subterranean formations
Methods of stimulating subterranean formations are provided. More particularly, methods of fracturing subterranean formations using a fracturing fluid comprising a self-degrading cement composition...
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7343976 |
Methods of treating subterranean formations using derivatized gelling agents
One embodiment of the present invention provides methods of treating a subterranean formation with a viscosified treatment fluid comprising combining water, a carbonyl-containing first compound,...
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7345013 |
Polymer Crosslinking System Comprising Soluble Zr(IV), Carbonate and Bicarbonate Ions
A composition useful for making gelled fluids by crosslinking hydratable polymers is an aqueous solution of zirconium complexed with carbonate and bicarbonate as the only multidentate ligands...
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7325615 |
Viscosified treatment fluids comprising polycarboxylic acid gelling agents and associated methods
Novel polycarboxylic acid copolymer gelling agents and viscosified treatment fluids comprising these gelling agents, and their associated methods of use and manufacture are provided. In one...
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7299876 |
Viscosified treatment fluids and associated methods of use
In one embodiment, provided is a method of fracturing a portion of a subterranean formation that comprises providing a viscosified treatment fluid comprising a single salt aqueous fluid having a...
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7287593 |
Methods of fracturing formations using quaternary amine salts as viscosifiers
Treatment methods including preparation of an aqueous treatment fluid composition composed of a carboxy modified polymer, a crosslinking agent, and a viscosifying quaternary amine salt, and...
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7275596 |
Method of using degradable fiber systems for stimulation
A method for minimizing the amount of metal crosslinked viscosifier necessary for treating a wellbore with proppant or gravel is given. The method includes using fibers to aid in transporting,...
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7271133 |
Methods and compositions for treating subterranean formations
Methods for treating subterranean formations and aqueous treating fluid compositions are provided. The aqueous treating fluid compositions comprise water, a water soluble hydrophobically modified...
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7264054 |
Fluids comprising zirconium isopropylamine crosslinking agents and associated methods
A method of treating a subterranean formation is provided, the method may comprise providing a fluid comprising an aqueous fluid, a gelling agent, and a zirconium triisopropylamine crosslinking...
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7261157 |
Methods of controlling particulate segregation in slurries
Methods for controlling particulate segregation comprising providing a mixture of an aqueous tackifying composition with a treatment fluid; slurrying the mixture with a first type of solid...
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7261158 |
Coarse-foamed fracturing fluids and associated methods
A method of fracturing a subterranean formation comprising the steps of: providing a coarse-foamed fracturing fluid comprising a liquid fracturing fluid component, a gas, proppant particulates, and...
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7225874 |
Methods and compositions for reducing the viscosity of treatment fluids used in subterranean operations
Methods and compositions for reducing the viscosity of subterranean treatment fluids that comprise a gelling agent utilizing breakers that comprise hydroquinone and/or a derivative thereof. In one...
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7168489 |
Orthoester compositions and methods for reducing the viscosified treatment fluids
In one embodiment, the present invention provides a method of reducing the viscosity of a viscosified treatment fluid comprising contacting the viscosified treatment fluid with an acid generated...
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7169767 |
Ophthalmic compositions containing galactomannan polymers and borate
The present invention is directed to ophthalmic compositions containing a gelling amount of a combination of galactomannan polysaccharides and borates. The compositions gel or partially gel upon...
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7131492 |
Divinyl sulfone crosslinking agents and methods of use in subterranean applications
This invention relates to divinyl sulfone crosslinking agents, viscosified treatment fluids, and methods of using these compositions in applications wherein viscosified treatment fluids may be...
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7104328 |
Method and apparatus for hydrating a gel for use in a subterranean well
The present invention relates to a method and system for hydrating a gel for treating a wellbore penetrating a subterranean formation. The method includes directing a base fluid through an inlet...
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7104327 |
Methods of fracturing high temperature subterranean zones and foamed fracturing fluids therefor
The present invention provides methods of fracturing high temperature subterranean zones and viscous aqueous foamed fracturing fluids therefor. A fracturing fluid of this invention comprises water,...
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7093659 |
Controlling chlorite or hypochlorite break rate of well treatment fluids using magnesium or calcium ions
Methods and compositions are provided for treating a subterranean formation penetrated by a well. The method includes the steps of: (a) forming a treatment fluid, and (b) introducing the treatment...
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7090015 |
Methods of treating subterranean zones and viscous aqueous fluids containing xanthan and a combination cross-linker—breaker
Methods of treating subterranean zones and viscous aqueous fluids containing xanthan biopolymer gelling agent and a combination crosslinker and delayed breaker are provided. A viscous cross-linked...
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7082995 |
Methods and compositions for reducing the viscosity of treatment fluids
Methods of reducing the viscosity of a viscosified treatment fluid are provided which comprise the steps of: providing a viscosified treatment fluid that comprises water, a crosslinked gelling...
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7078370 |
Biodegradable chelant compositions for fracturing fluid
It has been discovered that biodegradable and non-toxic chelant compositions can perform multiple beneficial functions in an aqueous fracturing fluid through the chelation of ions. Some of the...
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7069994 |
Method for hydraulic fracturing with squeeze pressure
Method for hydraulic fracturing of wells by transporting a cross-linked polymer containing a proppant down a wellbore in a carrier fluid, allowing the cross-linked polymer to coalesce into a...
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7063154 |
Methods of treating subterranean zones and treating fluids therefor
Methods of treating subterranean zones and treating fluids are provided. The methods are basically comprised of preparing or providing a subterranean zone treating fluid comprising an aqueous fluid...
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