| 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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| 03/25/2009 | EP2038366A2 Polyvinyl alcohol fluid loss additive with improved rheological properties |
| 03/25/2009 | EP2038365A1 Wellbore fluid |
| 03/25/2009 | EP2038364A2 Compressible objects having partial foam interiors combined with a drilling fluid to form a variable density drilling mud |
| 03/25/2009 | EP2038363A1 Improved high performance water-based drilling fluid |
| 03/25/2009 | EP2038362A1 Fluid loss additive for oil-based muds |
| 03/25/2009 | EP2038234A1 Cementing compositions comprising cement kbln dust, vitrified shale, zeolite, and/or amorphous sblica utdlizing a packing volume fraction, and associated methods |
| 03/25/2009 | EP1838757B1 Hydrolytically and hydrothermally stable consolidated proppants and method for the production thereof |
| 03/25/2009 | EP1756394A4 Spotting fluid for use with oil-based muds and method of use |
| 03/25/2009 | CN101395303A Corrosion inhibitors having increased biodegradability and reduced toxicity |
| 03/25/2009 | CN101392041A Hydrophobic associating polymer containing capsaicine and sulfonic group and preparation method thereof |
| 03/25/2009 | CN100471932C Formulations useful as asphaltene dispersants in petroleum products |
| 03/25/2009 | CN100471928C Efficient multifunctional clay anti-expension stabilizer for injecting water and its preparation method |
| 03/25/2009 | CN100471927C Improved drilling fluids |
| 03/24/2009 | US7507694 Drilling or fructuring fluid containing an oleaginous fluid ( diesel oil, cude oil, paraffin oil, olefin etc.) a fluid ( water, fresh or brine, glycerol, polyetheramine) that is partially immiscible with the oleaginous fluid, and emulsion facilitating particles; treating the subterranean formation |
| 03/24/2009 | US7507693 shortening the shear recovery time and increase viscosities by injecting a mixture comprising surfactant selected from cationic, anionic, zwitterionic, and amphoteric surfactants, and a rheology enhancer lignosulfonates derived from wood pulping |
| 03/24/2009 | US7507692 Methods for reducing circulation loss during drilling operations |
| 03/24/2009 | CA2639805A1 Viscosity reduction |
| 03/24/2009 | CA2416680C Methods of forming permeable sand screens in well bores |
| 03/19/2009 | WO2009035758A1 Drilling fluid lubricant and method of use |
| 03/19/2009 | WO2009034287A1 Methods of using colloidal silica based gels |
| 03/19/2009 | WO2009014821A3 Method for recovering crude oil from a subterranean formation |
| 03/19/2009 | WO2009010932A3 Preparing a hydratable polymer concentrate for well treatment applications |
| 03/19/2009 | WO2008121490A3 Treatment for recycling fracture water - gas and oil recovery in shale deposits |
| 03/19/2009 | WO2008065173A3 Thickener composition |
| 03/19/2009 | WO2008065172A3 Ph-regulated thickener system |
| 03/19/2009 | US20090075848 Environmentally compatible defoaming composition for use in fluids |
| 03/19/2009 | US20090075847 Drilling fluid lubricant and method of use |
| 03/19/2009 | US20090075846 Compositions for Treating a Well Penetrating a Subterranean Formation and Uses Thereof |
| 03/19/2009 | US20090075845 Degradable Polymers for Wellbore Fluids and Processes |
| 03/19/2009 | US20090075844 Method and composition for controlling inorganic fluoride scales |
| 03/19/2009 | US20090071653 Composition and method for cleaning formation faces |
| 03/18/2009 | EP2036964A1 Thickener for oil-based drilling fluids |
| 03/18/2009 | EP2036963A1 Lubricants for drilling fluids |
| 03/18/2009 | EP2036962A1 Additives for water-based drilling fluids |
| 03/18/2009 | EP2035651A2 Method for fabricating compressible objects for a variable density drilling mud |
| 03/18/2009 | EP2035525A1 The use of dicarbonyl compounds to increase the temperature stability of biopolymers during crude oil and natural gas exploration |
| 03/18/2009 | EP2035346A2 Cement compositions for low temperature applications |
| 03/18/2009 | EP2035344A2 Storable nonaqueous cement slurries and methods of using same |
| 03/18/2009 | EP1583810B1 Self-generating foamed drilling fluids |
| 03/18/2009 | CN101389729A Ethoxylated raw cotton linters for completion and workover fluids |
| 03/18/2009 | CN101389728A Process for breaking the viscosity of polymer-thickened aqueous systems for mineral oil and natural gas extraction |
| 03/18/2009 | CN101387190A Well killing method using absorbent resin to protect low pressure oil and gas reservoir |
| 03/18/2009 | CN101386782A Method for synthesizing C14-C20 alkyl benzene for fuel scavenge by alkylation process |
| 03/18/2009 | CN100469717C Treatment method for recovering pressing crack inverted discharged liquid |
| 03/17/2009 | US7504438 Demulsifiers, their preparation and use in oil bearing formations |
| 03/17/2009 | US7504366 Subterranean treatment fluids, friction reducing copolymers, and associated methods |
| 03/17/2009 | CA2247495C Chemically induced stimulation of cleat formation in a subterranean coal formation |
| 03/14/2009 | CA2639680A1 Methods, drilling fluids and drilling fluid additives for limiting tar sand accretion on metal surfaces |
| 03/14/2009 | CA2602746A1 Composition and method for cleaning formation faces |
| 03/12/2009 | WO2009032524A1 Use of oil-soluble surfactants as breaker enhancers for ves-gelled fluids |
| 03/12/2009 | WO2009032081A1 Enzyme enhanced oil recovery (eeor) for near well bore treatment of oil and gas with greater than 50% barrel of oil equivalent (boe) gas production |
| 03/12/2009 | WO2009030868A2 Drilling fluid containing carbon nanotubes |
| 03/12/2009 | WO2009030758A1 Hyper-fine cement |
| 03/12/2009 | US20090069202 Corrosion inhibition compositions and methods for using the same |
| 03/12/2009 | US20090069201 Method of culturing unicellular organisms |
| 03/12/2009 | US20090065207 Well Treatment To Inhibit Fines Migration |
| 03/12/2009 | CA2698226A1 Drilling fluid containing carbon nanotubes |
| 03/11/2009 | EP1242556B1 Acid based micro-emulsions |
| 03/11/2009 | CN101381735A Thermophilic long chain alkanol alcohol dehydrogenase and encode gene and application thereof |
| 03/11/2009 | CN101381598A Fracture liquid and preparation method thereof |
| 03/11/2009 | CN101381440A Preparation method of polyacrylamide phenolic resin crosslinking agent for improving oilfield recovery |
| 03/10/2009 | US7501385 Compositions and methods for water control and strengthening unconsolidated formations |
| 03/10/2009 | CA2466549C Colloidal and colloidal-like systems in aqueous, clay-based fluids |
| 03/10/2009 | CA2465222C Additive for oil-based drilling fluids |
| 03/10/2009 | CA2405608C Method and apparatus for acidizing a subterranean well formation for improving hydrocarbon production |
| 03/05/2009 | WO2009029694A1 Rheology modifying agents and methods of modifying fluid rheology use in hydrocarbon recovery |
| 03/05/2009 | WO2009029502A1 Method for identification of novel anaerobic denitrifying bacteria utilizing petroleum components as sole carbon source |
| 03/05/2009 | WO2009029500A1 Application of anaerobic denitrifying bacteria utilizing petroleum components as sole carbon source for oil recovery |
| 03/05/2009 | WO2009029497A1 Ring reduction via natural anaerobic microbiological activity for transformation of crude oil-associated aromatic chemicals |
| 03/05/2009 | WO2009028978A1 Biocide for protection of boring equipment against corrosion. |
| 03/05/2009 | WO2009027685A1 Methods and compositions related to the degradation of degradable polymers involving dehydrated salts and other associated methods |
| 03/05/2009 | WO2009027680A1 Well treatment |
| 03/05/2009 | US20090062158 Rheology modifying agents and methods of modifying fluid rheology use in hydrocarbon recovery |
| 03/05/2009 | US20090062157 Methods and compositions related to the degradation of degradable polymers involving dehydrated salts and other associated methods |
| 03/05/2009 | US20090062156 Methods of treating a subterranean formation including a biocidal treatment |
| 03/05/2009 | US20090062155 nonionic surfactant, water and methanol solvent; copolymer of acrylated polyoxyalkylene glycol and a perfluoroalkylsulfonamidoalkyl (meth)acrylate; condensate and/or water blocking issue |
| 03/05/2009 | US20090062154 Proppants and anti-flowback additives made from sillimanite minerals, methods of manufacture, and methods of use |
| 03/05/2009 | US20090062153 Enzyme enhanced oil/gas recovery (EEOR/EEGR) using non-gel hydraulic fracturing in hydrocarbon producing wells |
| 03/05/2009 | DE102007041417A1 Composition, useful for the production of crude oils, comprises butyl substituted naphthalene sulfonic acid, alkyl ether compound and/or polyol compound |
| 03/05/2009 | CA2695378A1 Application of anaerobic denitrifying bacteria utilizing petroleum components as sole carbon source for oil recovery |
| 03/05/2009 | CA2694914A1 Method for identification of novel anaerobic denitrifying bacteria utilizing petroleum components as sole carbon source |
| 03/05/2009 | CA2694913A1 Methods for improved hydrocarbon and water compatibility |
| 03/05/2009 | CA2694912A1 Ring reduction via natural anaerobic microbiological activity for transformation of crude oil-associated aromatic chemicals |
| 03/04/2009 | EP2031095A2 Corrosion inhibitors containing cationic tensides |
| 03/04/2009 | EP2031094A2 Corrosion inhibitors containing anionic tensides |
| 03/04/2009 | EP2031093A2 Corrosion inhibitors containing non-ionic tensides |
| 03/04/2009 | EP2031092A2 Corrosion inhibitors containing amphoteric tensides |
| 03/04/2009 | EP2031035A1 Use of substituted polyethyl enemines as gas hydrate inhibitors with improved biological degradability |
| 03/04/2009 | EP2031034A1 Methods of reducing the impact of a formate-based drilling fluid comprising an alkaline buffering agent on a cement slurry |
| 03/04/2009 | EP2029694A1 Highly branched polymeric materials as coating on weighting agents |
| 03/04/2009 | EP2029693A1 Highly branched polymeric materials as surfactants for oil-based muds |
| 03/04/2009 | EP1869285B1 Compositions and use of mono-and polyenoic acids for breaking ves-gelled fluids |
| 03/04/2009 | CN101379000A Control of the thickening of silicate-containing aqueous systems |
| 03/04/2009 | CN101378999A Method for controlling the thickening of aqueous systems |
| 03/04/2009 | CN101376803A Anti-waxing agent special for heavy crude well thermal recovery |
| 03/04/2009 | CN101376723A Preparation of reduction complexing type polymer chromium cross linker |
| 03/04/2009 | CN100465192C A preparation method of acetyl acetone cyclodextrin inclusion compounds and an application in reducing thick oil viscosity |
| 03/04/2009 | CN100464828C A lignin parents amphoteric surface active agent |
| 03/03/2009 | US7497278 Methods of degrading filter cakes in a subterranean formation |
| 03/03/2009 | US7497262 Antiswelling agents contains shale encapsulator contsisting of quaternary polyacrylamide and polyvinyl alcohol, for absorbing and binding on clay particles, encapsulating the cuttings during drilling solids in subterranean formation |