| Patents for C09K 8 - Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations (31,745) |
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| 06/12/2008 | US20080135246 Sintered spherical pellets useful for gas and oil well proppants |
| 06/12/2008 | US20080135243 Method of Reducing Water Influx Into Gas Wells |
| 06/12/2008 | CA2672031A1 Dehydrating treatment of oil and gas wells |
| 06/12/2008 | CA2668855A1 Methods of treating subterranean formations using hydrophobically modified polymers and compositions of the same |
| 06/12/2008 | CA2611047A1 Fracturing fluid loss control agent |
| 06/12/2008 | CA2610894A1 Fluid loss control and well cleanup methods |
| 06/12/2008 | CA2570953A1 Fracturing fluid and method for fracturing subterranean formations |
| 06/11/2008 | EP1929121A2 In-situ solidification of invert emulsion fluids to form gas tight annular barrier |
| 06/11/2008 | EP1928976A1 Methods of formulating a cement composition |
| 06/11/2008 | EP1928975A1 Settable compositions comprising cement kiln dust and additive(s) and method of using them |
| 06/11/2008 | EP1928974A1 Methods of using settable compositions comprising cement kiln dust |
| 06/11/2008 | CN101196109A Three-segment type block releasing technique for oil layer |
| 06/11/2008 | CN101195576A Method and apparatus for preparing alkyl esters of methacrylic acid |
| 06/11/2008 | CN101195574A Integrated process and apparatus for preparing esters of methacrylic acid from acetone and hydrocyanic acid |
| 06/10/2008 | US7385019 Aqueous solutions capable of gelation containing dissolved polymer |
| 06/10/2008 | US7384894 Cement compositions with improved fluid loss characteristics and methods of cementing in surface and subterranean applications |
| 06/10/2008 | US7384893 Cement compositions with improved fluid loss characteristics and methods of cementing in surface and subterranean applications |
| 06/10/2008 | US7384892 Water-based drilling fluids |
| 06/10/2008 | CA2517063C A method of using a swelling agent to prevent a cement slurry from being lost to a subterranean formation |
| 06/10/2008 | CA2468936C Methods and compositions for sealing an expandable tubular in a wellbore |
| 06/10/2008 | CA2461297C Viscous well treating fluids and methods |
| 06/10/2008 | CA2399485C Polymer-enhanced foamable drilling fluid |
| 06/10/2008 | CA2292954C Defoaming compositions and methods |
| 06/10/2008 | CA2209516C Thixotropic materials |
| 06/05/2008 | WO2008065173A2 Thickener composition |
| 06/05/2008 | WO2008065172A2 Ph-regulated thickener system |
| 06/05/2008 | WO2008064452A1 Downhole drilling compositions and methods of preparation |
| 06/05/2008 | US20080132711 High Molecular Weight Polyamine Salts as Clay Stabilizing Agents |
| 06/05/2008 | US20080132431 water, a scale inhibitor, and a guar; scale inhibitor is a sulphonate-functional phosphonated copolymer or diethylene-triaminepentakis(methylenephosphonic acid) |
| 06/05/2008 | US20080131393 Block polymers, compositions and methods of use for foams, laundry detergents, shower rinses and coagulants |
| 06/05/2008 | CA2670053A1 Downhole drilling compositions and methods of preparation |
| 06/05/2008 | CA2669627A1 Thickener composition |
| 06/05/2008 | CA2669617A1 Ph-regulated thickener system |
| 06/04/2008 | EP1401988B1 Method for solubilising asphaltenes in a hydrocarbon mixture |
| 06/04/2008 | CN101193955A Vinyl alcohol copolymers for use in aqueous dispersions and melt extruded articles |
| 06/04/2008 | CN101191140A Biological polypeptide blocking remover and preparation method thereof |
| 06/04/2008 | CN100391601C Catalyst for downhole catalytic reforming of viscous crude |
| 06/03/2008 | US7381689 Methods for inhibiting hydrate blockage in oil and gas pipelines using amide compounds |
| 06/03/2008 | US7381332 by mixing water in oil emulsions comprising polymer derived from water soluble monomers |
| 06/03/2008 | US7380606 Composition and process for well cleaning |
| 06/03/2008 | US7380601 Degradable fiber systems for stimulation |
| 06/03/2008 | CA2505896C A method for enhancing the stability of a water sensitive, reactive subterranean formation |
| 06/03/2008 | CA2498437C Method for increasing the reaction efficiency of acetic and/or formic acid |
| 06/03/2008 | CA2353771C Oil-based settable spotting fluid |
| 05/29/2008 | WO2008064074A1 Insulating fluid and methods for preparing and insulating concentric piping |
| 05/29/2008 | WO2008035254A3 Internal breaker for oilfield treatments |
| 05/29/2008 | WO2008035253A3 Oxidative internal breaker for viscoelastic surfactant fluids |
| 05/29/2008 | US20080125335 Oilfield element; detecting temperatures and pressures down hole; submersible pump motor protector bags, packer elements, blow out preventer elements, zonal isolation tool elements, O-rings, T-rings |
| 05/29/2008 | US20080121398 Method of Acidizing a Subterranean Formation with Diverting Foam or Fluid |
| 05/29/2008 | US20080121395 Well bore servicing fluids comprising thermally activated viscosification compounds and methods of using the same |
| 05/29/2008 | CA2819744A1 Oxazolidinium compounds and use as hydrate inhibitors |
| 05/29/2008 | CA2769571A1 Oxazolidinium compounds and use as hydrate inhibitors |
| 05/29/2008 | CA2669400A1 Insulating fluid and methods for preparing and insulating concentric piping |
| 05/29/2008 | CA2669192A1 Polymeric acid precursor compositions and methods |
| 05/29/2008 | CA2611798A1 Oilfield apparatus comprising swellable elastomers having nanosensors therein and methods of using same in oilfield applications |
| 05/28/2008 | EP1925651A1 Method of consolidating sand in a subterranean formation |
| 05/28/2008 | EP1924669A1 Polymer mixtures for crosslinked fluids |
| 05/28/2008 | EP1924668A1 Foamed settable compositions comprising cement kiln dust, and methods of using them |
| 05/28/2008 | EP1924529A1 Apparatus and process for the incorporation of a dry treatment product into a liquid waste |
| 05/28/2008 | CN101186813A Fast drilling fluid and preparation technique thereof |
| 05/28/2008 | CN101186812A Fast drilling agent formulation and preparation technique thereof |
| 05/28/2008 | CN101186811A Drilling fluid |
| 05/28/2008 | CN101186654A Method for extracting xanthan gum used for calcium treated drilling fluid |
| 05/27/2008 | US7378477 Water soluble polymer containing stryrenesulfonic acid, vinylsulfonic acid, vinyl phosphonic acid |
| 05/27/2008 | US7378378 Rheology enhancers |
| 05/27/2008 | US7378377 Comprises hydraulic cement, an aqueous saline fluid sufficient to form a slurry, a polymer precipitation and coagulation preventing surfactant, and a water-in-oil emulsion polymer; well treating fluid |
| 05/27/2008 | US7377721 Methods for using reversible phase oil-based drilling fluid |
| 05/27/2008 | CA2276714C Slag for cementing a well, in particular an oil well |
| 05/22/2008 | WO2008059234A2 Surfactant compounds |
| 05/22/2008 | WO2008058636A1 Process for obtaining carbon dioxide |
| 05/22/2008 | WO2008033838A3 Precipitated weighting agents for use in wellbore fluids |
| 05/22/2008 | US20080119374 Polymeric acid precursor at least partially dissolved within a polymer dispersing solvent.of dimethyloxalate, dimethyl ester of propanedioic acid, dimethyl maleate, dimethyl malonate, dimethyl succinate, dimethyl glutarate or dimethyl adipate.and a surfactant |
| 05/22/2008 | US20080115932 Method and apparatus for delayed flow or pressure change in wells |
| 05/22/2008 | CA2611803A1 Well treatment fluid containing viscoelastic surfactant and viscosification activator |
| 05/21/2008 | EP1853643B1 Polymers and their production and use as gas hydrate inhibitors |
| 05/21/2008 | CN101182411A Anion worm-shaped micellar flooding system and preparation method thereof |
| 05/21/2008 | CN101182410A Oil field inhibitor |
| 05/21/2008 | CN101182409A Anti-collapse circulative micro-foam drilling fluid or well completion fluid |
| 05/21/2008 | CN100389167C Alkali/surfactant composition useful in polynary chemical composite flooding |
| 05/20/2008 | US7373977 amphoteric alkyl amido betaine surfactants form a viscoelastic gel reducing interfacial tension and increasing viscosity of injection fluid simultaneously; aqueous injection fluids; the produced water can be used as the injection water without costly water treatment, softening and sludge disposal |
| 05/15/2008 | WO2008057892A1 Use of anionic surfactants as hydration aid for fracturing fluids |
| 05/15/2008 | WO2008056302A1 Delayed water-swelling materials and methods of use |
| 05/15/2008 | WO2008056301A1 Method of plugging fractured formation |
| 05/15/2008 | WO2008055351A1 Oil well fracturing fluids and methods |
| 05/15/2008 | US20080113884 alkylxylene moiety in the alkylxylene sulfonate contains a high percentage of the 4-alkyl-1,2-dimethyl benzene isomer and attachment of the alkyl group to the xylene ring at positions higher than the 2-position on the alkyl carbon chain; for enhancing the recovery of oil from a subterranean reservoir |
| 05/15/2008 | US20080113883 Method of using thermal insulation fluid containing hollow microspheres |
| 05/15/2008 | US20080113882 Well bore for oil or gas; polar organic solvent, water, fluorochemical, organic acid, inorganic acid; alcohol, ketone, nitrile, formamide; formic acid, triflic acid, perfluorobutyric acid; hydroboric acid, sulfuric acid; water; amine, alkali metal hydroxide; reduce rate of n-decane or water imbibition |
| 05/15/2008 | US20080113881 Recovery composition and method |
| 05/15/2008 | US20080113880 Solid-liquid separation of oil-based muds |
| 05/15/2008 | US20080113879 Lost Circulation Additive for Drilling Fluids |
| 05/15/2008 | US20080113878 Polyesters for inhibiting nucleation, growth, agglomeration of gas hydrates in drilling fluid; add inhibitor to polyphasic mixture of water, gas and condensate; tartaric acid, glycerol, pyroglutamic acid |
| 05/15/2008 | US20080112984 Novel Hydrogels Based On Polyvinyl Alcohols And Polyvinyl Alcohol Copolymers |
| 05/15/2008 | US20080110623 Method of Stimulating Oil and Gas Wells Using Deformable Proppants |
| 05/15/2008 | US20080110619 Methods of using substantially hydrated cement particulates in subterranean applications |
| 05/15/2008 | US20080110618 In Situ Fluid Formation for Cleaning Oil- or Synthetic-Oil-Based Mud |
| 05/15/2008 | CA2668857A1 Delayed water-swelling materials and methods of use |
| 05/15/2008 | CA2668561A1 Use of anionic surfactants as hydration aid for fracturing fluids |
| 05/15/2008 | CA2668505A1 Method of plugging fractured formation |
| 05/15/2008 | CA2667321A1 Oil well fracturing fluids and methods |
| 05/14/2008 | EP1766184B1 Use of lithium salts of fatty alcohol sulphates for cleaning boreholes, boring devices and borings |