| 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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| 02/18/1998 | CN1173904A Microfibrillated cellulose and method for preparing same from primary wall plant pulp, particularly sugar beet pulp |
| 02/18/1998 | CN1173893A Stable and water-resistance aqueous foam composition |
| 02/17/1998 | US5718841 Organoclay compositions manufactured with organic acid derived ester quaternary ammonium compounds |
| 02/17/1998 | CA2183489A1 Method and composition for controlling the set time of cement |
| 02/16/1998 | CA2183414A1 Method of using construction grade cement in oil and gas wells |
| 02/12/1998 | WO1998005735A1 Invert emulsion fluids suitable for drilling |
| 02/12/1998 | WO1998005734A1 Improved oil-based drilling fluid |
| 02/12/1998 | WO1998005733A1 Improved oil-based drilling fluid |
| 02/11/1998 | EP0823408A1 Set retarded downhole cementing compositions |
| 02/10/1998 | US5716910 Mixture containing prehydrated clay, water, foaming surfactant, stabilizing surfactant, hydraulic material and a gas to foam drilling fluid |
| 02/10/1998 | US5715896 Method and composition for reducing torque in downhole drilling |
| 02/09/1998 | CA2206283A1 Formulation for creating a pliable resin plug |
| 02/07/1998 | CA2212600A1 Set retarded cememting compositions and methods |
| 02/03/1998 | US5713416 Methods of decomposing gas hydrates |
| 01/29/1998 | WO1998003615A1 Method of inhibiting gas hydrate formation |
| 01/29/1998 | WO1998003609A1 An additive for increasing the density of a fluid and fluid comprising such additive |
| 01/29/1998 | WO1998003462A1 Esters, ethers, and compositions comprising them |
| 01/29/1998 | WO1997041330A3 Multi-lateral wellbore system and method for forming same |
| 01/29/1998 | DE19629662A1 Verfahren zur Inhibierung der Gashydratbildung A method for inhibiting gas hydrate formation |
| 01/29/1998 | CA2260792A1 Esters, ethers, and compositions comprising them |
| 01/28/1998 | EP0821047A2 A method for controlling fluid loss in permeable formations |
| 01/28/1998 | CN1171292A Compound surfactant for teriary oil producation and appliction thereof |
| 01/27/1998 | US5712314 Furan resin, acid catalyst, well completion |
| 01/27/1998 | US5712228 Silicone based fluids for drilling applications |
| 01/27/1998 | US5711801 Cement compositions |
| 01/27/1998 | US5711383 Cementitious well drilling fluids and methods |
| 01/27/1998 | US5711376 Hydraulic fracturing process |
| 01/27/1998 | US5711373 Method for recovering a hydrocarbon liquid from a subterranean formation |
| 01/22/1998 | WO1998002636A1 Use of oil and gas field chemicals |
| 01/22/1998 | WO1998002499A1 Fluid comprising cellulose nanofibrils and its use for oil mining |
| 01/22/1998 | WO1998002487A1 Additivation of essentially amorphous cellulose nanofibrils with carboxyl cellulose with a high degree of substitution |
| 01/22/1998 | WO1998002486A1 Additivation of cellulose nanofibrils with carboxyl cellulose with low degree of substitution |
| 01/22/1998 | WO1998002415A2 Method for inhibiting corrosion and process for preparing 1-amidoalkylimidazoles |
| 01/22/1998 | DE19628893A1 Verwendung von 1-Amidoalkylimidazolen als Korrosionsinhibitoren in der petrochemischen Industrie und Verfahren zu deren Herstellung Using 1-Amidoalkylimidazolen as corrosion inhibitors in the petrochemical industry and processes for their preparation |
| 01/22/1998 | CA2262871A1 Corrosion inhibition |
| 01/22/1998 | CA2261093A1 Additivation of essentially amorphous cellulose nanofibrils with carboxyl cellulose with a high degree of substitution |
| 01/22/1998 | CA2261092A1 Additivation of cellulose nanofibrils with carboxyl cellulose with low degree of substitution |
| 01/22/1998 | CA2261089A1 Fluid comprising cellulose nanofibrils and its use for oil mining |
| 01/22/1998 | CA2203207A1 Method to increase sand grain coating coverage |
| 01/21/1998 | EP0819833A2 Particulate-containing well treatment fluid |
| 01/21/1998 | EP0819704A1 Process for preparing polymers soluble in water, polymers thus prepared and their use |
| 01/21/1998 | EP0819098A1 Process for the production of cesium compounds |
| 01/21/1998 | EP0735919B1 Solvent soaps and methods employing same |
| 01/20/1998 | US5710111 Solids-free wellbore fluid |
| 01/20/1998 | US5710110 Nonionic surfactant and maleic anhydride, phthalic anhydride or mixtures |
| 01/20/1998 | US5710109 Method for acidizing formation having high permeability water zones |
| 01/20/1998 | US5710108 Biopolymer/oil suspension compositions utilized in aqueous-based fluids used in the oil service industry including completion and drilling fluids |
| 01/20/1998 | US5710107 Environmentally safe drilling fluid |
| 01/20/1998 | CA2135719C Nitrogen/carbon dioxide combination fracture treatment |
| 01/14/1998 | EP0817819A1 Hydrocarbon gels useful in formation fracturing |
| 01/14/1998 | EP0817818A1 Use of sized salts as bridging agent for oil based fluids |
| 01/14/1998 | EP0817605A1 Compositions based on apg and at least one additional nonionic sugar cosurfactant |
| 01/13/1998 | US5708107 Compositions and processes for treating subterranean formations |
| 01/13/1998 | US5707940 Environmentally friendly water based drilling fluids |
| 01/13/1998 | US5707939 Silicone oil-based drilling fluids |
| 01/13/1998 | US5706895 Polymer enhanced foam workover, completion, and kill fluids |
| 01/07/1998 | EP0816302A2 Well cement compositions |
| 01/07/1998 | EP0816301A2 Well cement compositions |
| 01/07/1998 | EP0816300A2 Well cement compositions |
| 01/07/1998 | EP0815426A2 Improvements in or relating to the preparation of samples for palynological analysis |
| 01/07/1998 | EP0695392A4 Stimulation of coalbed methane production |
| 01/07/1998 | CN1169766A Material and method for lubricating the metal surfaces of earth pressure tunnel boring machine |
| 01/06/1998 | US5705599 Graft polymers of ketone-aldehyde condensation and co-condensation products |
| 01/06/1998 | US5705553 Copolymers containing carboxyl groups in aqueous dispersion form or redispersible powder form and their water-soluble salts, processes for their preparation and their use as thickeners in aqueous formulations |
| 01/06/1998 | CA2006967C Method for profile control in enhanced oil recovery |
| 12/31/1997 | WO1997049644A1 Lightweight thermally stable cement compositions and method of use |
| 12/30/1997 | US5701956 Methods and compositions for reducing water production from subterranean formations |
| 12/30/1997 | US5701955 Downhole fluid control processes |
| 12/29/1997 | EP0814232A2 Well completion spacer fluids |
| 12/29/1997 | EP0814067A1 Cementing compositions and application of such compositions to cementing oil (or similar) wells |
| 12/29/1997 | EP0772696A4 Method for removing alkaline sulfate scale |
| 12/29/1997 | EP0728254A4 A method of scale dissolution in a formation containing multiple productive intervals |
| 12/29/1997 | EP0552330B1 Drilling, completion, and workover fluids comprising ground peanut hulls |
| 12/24/1997 | WO1997048879A1 Method and spacer fluid composition for displacing drilling fluid from a wellbore |
| 12/24/1997 | WO1997048655A1 Method and cement-drilling fluid cement composition for cementing a wellbore |
| 12/24/1997 | CA2258363A1 Method and cement-drilling fluid cement composition for cementing a wellbore |
| 12/24/1997 | CA2258321A1 Method and spacer fluid composition for displacing drilling fluid from a wellbore |
| 12/23/1997 | US5700767 Consisting of stearate surfactant, filming amine, activator, diluent; coats metal surfaces submerged in water based well liquid and, in response to friction, forms greasy water based emulsion thereon |
| 12/23/1997 | US5700763 Thermally stable oil-based drilling fluid |
| 12/23/1997 | US5699860 Fracture propping agents and methods |
| 12/18/1997 | WO1997047708A1 Method of inhibiting reservoir souring by bacteria |
| 12/18/1997 | CA2207885A1 Cementing compositions and application of such compositions to cementing oil (or similar) wells |
| 12/17/1997 | EP0812307A1 Method for inhibiting hydrate formation |
| 12/16/1997 | US5698747 Removal impurities using alkoxide |
| 12/16/1997 | US5697458 Drilling fluid process |
| 12/16/1997 | US5697444 Fracturing a subterranean formation by introducing a fluid consisting of carboxyethyl or methyl or propyl guar and their salts, zirconium salt as crosslinking agent, thermal stabilizing agents, ph buffers and water |
| 12/16/1997 | US5697443 Method and composition for acidizing subterranean formations utilizing corrosion inhibitor intensifiers |
| 12/16/1997 | US5697440 Control of particulate flowback in subterranean wells |
| 12/10/1997 | EP0811110A1 Oil well treatment |
| 12/10/1997 | EP0607426B1 Process for producing highly viscous petroleum products and pumping them further |
| 12/10/1997 | CN1036672C Method for cementing well |
| 12/10/1997 | CN1036671C Method for getting hydrocarbon |
| 12/09/1997 | US5696174 Stable and water-resistant aqueous foam composition |
| 12/09/1997 | US5696059 Methods of preventing well cement stress failure |
| 12/09/1997 | US5696058 Solids-free, essentially all-oil wellbore fluid |
| 12/09/1997 | CA2111251C Utilizing drilling fluid in well cementing operations |
| 12/09/1997 | CA2104559C Blended drilling fluid thinner |
| 12/04/1997 | WO1997045625A1 Coated products and use thereof in oil fields |
| 12/03/1997 | EP0809686A1 Stable and water-resistance aqueous foam composition |
| 12/03/1997 | EP0809619A1 Method for inhibiting hydrate formation |