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| Number | Title | Issue Date |
| 7405183 | Methods and compositions for crosslinking polymers with boronic acids The present invention provides a method of forming a viscosified treatment fluid comprising: providing a treatment fluid that comprises water and a gelling agent; contacting the treatment fluid with a boronic acid crosslinking agent so as to form a crosslinked gelli... | 07/29/2008 |
| 7345011 | Methods for mitigating the production of water from subterranean formations The present invention relates to treatment operations in subterranean zones, and more particularly, to consolidation compositions and methods of using these consolidation compositions to mitigate water production from subterranean formations. The present invention p... | 03/18/2008 |
| 7345012 | Foamed viscoelastic surfactants A method for increasing the foam stability of foams made with cationic, zwitterionic, and amphoteric viscoelastic surfactant fluid systems by adding an effective amount of an amphiphilic polymeric foam stabilizer containing at least one portion that is a partially h... | 03/18/2008 |
| 7258170 | Methods for remediating subterranean formations Methods of increasing the permeability of a portion of a subterranean formation may comprise providing a remediation fluid capable of decreasing the tackiness of a tackifying agent, the remediation fluid comprising a surfactant; introducing the remediation fluid int... | 08/21/2007 |
| 6939833 | Additive for, treatment fluid for, and method of plugging a tubing/casing annulus in a well bore For tubing/casing annulus plug treatment to plug a well, a tubing/casing annulus plug additive including a dry mixture of water soluble crosslinkable polymer, a crosslinking agent, a filter aid, and an optional reinforcing material, preferably of fibers and/or commi... | 09/06/2005 |
| 6787505 | Electrically conductive non-aqueous wellbore fluids A wellbore fluid having a non-aqueous continuous liquid phase that exhibits an electrical conductivity of not less than 10 μS m−1 at 1 kHz comprises a polar organic liquid (POL) which exhibits a dielectric constant of at least about 5.0 and a Hildebran... | 09/07/2004 |
| 6593278 | Method for inhibiting corrosion using certain phosphorus and sulfur-free compounds The present invention relates to a method for inhibiting corrosion of corrosion-prone metal surfaces by organic acid-containing petroleum streams by providing an effective corrosion-inhibiting amount of certain sulfur and phosphorus-free aromatic compound... | 07/15/2003 |
| 6135207 | Well treatment pellets Solid, slowly dispersible well treatment composites are provided which have a sufficiently high melting point to prevent melting of the composite in hot weather. The composites have a low solubility and high specific gravity compared to prior art treatmen... | 10/24/2000 |
| 6059992 | Gas treating solution corrosion inhibitor Corrosion in aqueous alkanolamine, physical solvents, or combination of alkanolamine and physical solvent solutions used to remove acid gases from natural gas, synthetic gas, or light hydrocarbon streams can be reduced by addition of mixtures of oxygen sc... | 05/09/2000 |
| 6022834 | Alkaline surfactant polymer flooding composition and process An improved concentrated surfactant formulation and process for the recovery of residual oil from subterranean petroleum reservoirs, and more particularly an improved alkali surfactant flooding process which results in ultra-low interfacial tensions betwe... | 02/08/2000 |
| 5821202 | Hydrocarbon stream antifoulant method using bridged alkyl phenates Formation of fouling deposits in a hydrocarbon process stream during processing at elevated temperatures is reduced by including in the hydrocarbon process stream an antifouling amount of a salt of a hydrocarbyl-substituted linked hydroxyaromatic compound... | 10/13/1998 |
| 5654260 | Corrosion inhibitor for wellbore applications This invention concerns a corrosion-inhibitor nominally comprised of a phenolic compound and a hydroxide-bearing compound capable of imparting a pH of 9 to water, the inclusion thereof in aerated water-based fluids and foams, and the use of these fluids i... | 08/05/1997 |
| 5441928 | Aqueous gellable composition containing an anti-syneresis agent An aqueous gellable composition capable of producing gels resistant to syneresis in the presence of divalent ions, contains: a water-soluble acrylamide polymer or copolymer, a crosslinking agent formed by a water-soluble aldehyde, or a water-soluble aldehyde a... | 08/15/1995 |
| 5335733 | Method for delaying gelation of a gelable polymer composition injected into a subterranean formation The gelation of a gelable composition is delayed by using, inter alia, a crosslinking rate retardant selected from the group consisting of epoxides, ethers, and mixtures thereof.... | 08/09/1994 |
| 5225090 | Visible gels prepared using stainless steel as a crosslinking agent Visible gels are formed by mixing an inorganic crosslinking agent with a low viscosity aqueous solution having a low polyacrylamide content. The visible gels are employed to reduce the water/hydrocarbon permeability ratio of subterranean formations.... | 07/06/1993 |
| 5145590 | Method for improving the high temperature gel stability of borated galactomannans A complexor solution and method of use are shown for providing controlled delay and improved high temperature gel stability of borated fracturing fluids. A base fluid is first prepared by blending together an aqueous fluid and a hydratable polymer which i... | 09/08/1992 |
| 5125456 | Composition for selectively reducing subterranean formation permeability Visible gels are formed by mixing an inorganic crosslinking agent with a low viscosity aqueous solution having a low polyacrylamide content. The visible gels are employed to reduce the water/hydrocarbon permeability ratio of subterranean formations.... | 06/30/1992 |
| 5104556 | Oil well treatment composition Solvent compositions for dissolution of both asphaltene and paraffin petroleum based deposits are described. Solvent compositions comprising kerosene and alkyl phenols, preferably cresol, have been found most efficient in oil well cleaning applications. T... | 04/14/1992 |
| 5084105 | Sulfate scale dissolution Alkaline earth metal scales, especially barium sulfate scale deposits are removed from oilfield pipe and other tubular goods with a scale-removing composition comprising an aqueous alkaline solution having a pH of about 8 to about 14, preferably about 11 ... | 01/28/1992 |
| 5028344 | Stabilizing agent for profile control gels and polymeric gels of improved stability An aqueous polymeric gel-forming composition of improved stability for selectively plugging highly permeable zones in subterranean oil-bearing formations. The composition comprises an aqueous solution of a water-dispersible polymer present in a viscosifyi... | 07/02/1991 |
| 5028343 | Stabilized sulfur dissolving compositions A composition of matter is disclosed which includes a major proportion of an organic di- or polysulfide, a catalytic amount of an amine/mercaptan mixture, and a stabilizing component in an amount sufficient to inhibit loss of catalytic activity in storage... | 07/02/1991 |
| 5026491 | Controlling sulfate reducing bacteria by slug dosing with quick-kill antimicrobials and by continuous dosing with isothiazolones A method is described whereby quick-kill and maintenance antimicrobials are used to control biofouling of oil production water injection systems.... | 06/25/1991 |
| 4986356 | Method of removing polymer gels from a petroleum reservoir When used as occlusion agents or to cause fractures in a petroleum reservoir, polymer gels crosslinked with polyvalent metal ions can be removed by the use of special complexing agents.... | 01/22/1991 |
| 4845134 | Gelable compositions and use thereof in steam treatment of wells A gelable composition is provided which can be injected into a well prior to steam treatment of the well. The composition comprises water, a water-dispersible polymer, a water-dispersible first crosslinker and a water-dispersible second crosslinker, where... | 07/04/1989 |
| 4830766 | Use of reducing agents to control scale deposition from high temperature brine The deposition of metal-containing scale, such as iron silicate scale, from a hot aqueous geothermal brine, or the like, is controlled by blending into the brine sufficient reducing agent effective for reducing trivalent iron and manganese cations in a hi... | 05/16/1989 |
| 4610795 | Peroxygen breaker systems for well completion fluids A hydraulic process has been developed and a process to treat subterranean formations whereby the medium can maintain for a period of time a sufficient viscosity to function as a hydraulic medium and optionally to support particulate matter. Subsequently,... | 09/09/1986 |
| 4604233 | Thickened aqueous hydrochloric acid composition for descaling, or treatment of subterranean formations The invention provides a thickened aqueous hydrochloric acid composition comprising (a) 1 to 20% w hydrogen chloride, (b) an alcohol ethoxylate of general formula wherein R is a C8-20 alkyl group and n has an average value in the range 3 to 15, pro... | 08/05/1986 |
| 4565248 | Method for producing water soluble resols and use therefor The effluent stream from a process for producing phenolic compounds is reacted with an aldehyde in the presence of a base to form a water soluble resol which is useful in enhanced oil recovery.... | 01/21/1986 |
| 4552675 | Composition and method for treating a subterranean formation An aqueous composition has been developed to treat subterranean formations whereby the compositions can maintain for a period of time a sufficient viscosity to function as a hydraulic fluid and optionally to support particulate matter. Subsequently, the v... | 11/12/1985 |
| 4552674 | Composition and method for treating a subterranean formation An aqueous composition has been developed to treat subterranean formations whereby the compositions can maintain for a period of time a sufficient viscosity to function as a hydraulic fluid and optionally to support particulate matter. Subsequently, the v... | 11/12/1985 |
| 4552668 | Oxidation of sulfides in polymer-thickened aqueous solution A method for preferentially oxidizing sulfide in a viscous, aqueous solution of a hydratable polymeric material suitable for use in hydraulically treating subterranean formations.... | 11/12/1985 |
| 4515700 | Gelled acid composition A stable polysaccharide gelled acid is produced by heating a polysaccharide solution which has not previously been heated at temperatures in excess of about 60° F. at a temperature of from about 60° C. up to the boiling point of the polysaccharide solut... | 05/07/1985 |
| 4440228 | Gelled compositions and well treating Gelled compositions suitable as fracture fluids and water diversion agents comprising water, a polymeric viscosifier, an aldehyde component, and at least one phenolic component such as resorcinol, catechol, and the like, as well as selected oxidized pheno... | 04/03/1984 |
| 4393934 | Conditioning a coal seam prior to in-situ gasification A method for conditioning a coal seam prior to in-situ gasification to increase the permeability of the coal seam to the flow of combustion-supporting gas therethrough and thus increase the efficiency of gasification wherein a wettability alteration fluid... | 07/19/1983 |
| 4389320 | Foamable compositions and formations treatment Thermally stable foamable gelled compositions suitable for post-primary oil recovery, e.g., steam- or gas-foamed systems comprising water, a surfactant, a polymeric viscosifier, an aldehyde component, and at least one phenolic component such as resorcinol... | 06/21/1983 |
| 4331543 | Method of retarding degradation of surfactants employed in waterflooding A process for the recovery of oil from subterranean oil reservoirs by waterflooding employing ether-linked sulfonate surfactants in which oxidative degradation of the surfactant is retarded through the establishment of an anaerobic condition in the surfac... | 05/25/1982 |
| 4326984 | Micellar solutions of thin film spreading agents comprising polyepoxide condensates or resinous polyalkylene oxide adducts and polyether polyols The invention provides a homogeneous, micellar solution of a water-insoluble thin film spreading agent comprising polyepoxide condensates of resinous polyalkylene oxide adducts and polyether polyols comprising: (a) from between about 5% and about 75% by w... | 04/27/1982 |
| 4326983 | Micellar solutions of thin film spreading agents comprising a polyether polyol The invention provides a homogeneous, micellar solution of a water-insoluble thin film spreading agent comprising: (a) from between about 5% and about 75% by weight of a polyether polyol; (b) from between about 2% and about 30% by weight of a hydrotropic ... | 04/27/1982 |
| 4316808 | Method for breaking petroleum emulsions and the like using micellar solutions of thin film spreading agents comprising an acylated polyether polyol The invention relates to the use of a homogeneous, micellar solution of a water-insoluble thin film spreading agent for the breaking of petroleum emulsions, and the like, comprising: (a) from between about 5% and about 75% by weight of an acylated polyeth... | 02/23/1982 |
| 4309306 | Micellar solutions of thin film spreading agents comprising resinous polyalkylene oxide adducts The invention provides a homogeneous, micellar solution of a water-insoluble thin film spreading agent, comprising: (a) from between about 5% and about 75% by weight of resinous polyalkylene oxide adducts; (b) from between about 2% and about 30% by weight... | 01/05/1982 |
