| 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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| 10/17/2001 | EP0866787B1 An amino nitrile intermediate for the preparation of 2-hydroxyethyl iminodiacetic acid |
| 10/16/2001 | US6303544 Modified with salt of aluminum, ferro-, ferric-, zinc, nickel, tin(2) or tin(4) and a ligand |
| 10/16/2001 | US6303079 Mixture of quaternized amido imidazoline and quaternized amino imidazole. |
| 10/16/2001 | US6302209 Surfactant compositions and uses therefor |
| 10/16/2001 | US6302207 Methods of completing unconsolidated subterranean producing zones |
| 10/16/2001 | CA2175859C Dehydration of drilling fluids |
| 10/11/2001 | WO2001074967A1 Methods for reducing lost circulation in wellbores |
| 10/11/2001 | WO2001074966A1 Maintenance of oil production and refining equipment |
| 10/11/2001 | WO2001074915A1 Ampholytic polymer dispersion composition and method of use |
| 10/11/2001 | WO2001074907A1 Viscosified aqueous fluids and viscosifier therefor |
| 10/11/2001 | WO2001074478A2 Method of generating gas bubbles in oleaginous liquids |
| 10/11/2001 | US20010029403 Method and apparatus for determining optimum exposure threshold for a given photolithographic model |
| 10/11/2001 | US20010027880 Aphron-containing well drilling and servicing fluids |
| 10/11/2001 | DE10021476A1 Water soluble graft polymer, useful as an additive for hydraulically binding building material compositions, consists of a sulfonated condensation product based on an aminoplast former. |
| 10/11/2001 | CA2404316A1 Maintenance of oil production and refining equipment |
| 10/10/2001 | EP0991607B1 Suspensions with high storage stability, comprising an aqueous silicate solution and a filler material |
| 10/10/2001 | EP0800613B1 Acid treatment method for siliceous formations |
| 10/09/2001 | US6300286 Clay-free well and service fluid of water brine |
| 10/04/2001 | US20010025709 09342446well cementing method using hmhpg filtrate remover |
| 10/04/2001 | EP1138740A1 Organophilic clay additives and oil well drilling fluids with less temperature dependent rheological properties containing said additives |
| 10/04/2001 | EP1137736A1 Lubricants for drilling fluids |
| 10/04/2001 | EP1137651A1 1-hydroxy-3-sulfonoalkane-1,1-diphosphonous acids |
| 10/04/2001 | EP1114116A4 Aphron-containing well drilling and servicing fluids of enhanced stability |
| 10/04/2001 | EP1114115A4 Polysaccharide-containing well drilling and servicing fluids |
| 10/03/2001 | CN1072297C Microfibrillated cellulose and method for preparing same from primary wall plant pulp, particularly sugar beet pulp |
| 10/02/2001 | US6297295 Adding a foaming agent to form a mixture; and mixing said mixture to form a foam within the mixture. |
| 10/02/2001 | US6297201 Mixture of gellable liquid hydrocarbon, phosphate ester, crosslinking agent and oxyalkylated dialkylamine |
| 09/27/2001 | WO2001070646A1 Cementing compositions and application of these compositions to cementing oil wells or the like |
| 09/26/2001 | EP1135438A1 Dispersible water soluble polymers |
| 09/26/2001 | EP1135396A1 Phosphonate-containing mixtures |
| 09/26/2001 | EP0912815B1 Use of oil and gas field chemicals |
| 09/25/2001 | US6294351 Upgrading coal slurry; propagate thermophilic bacteria in a nutritionally stressed environment, recover nutritionally stressed bacteria |
| 09/20/2001 | WO2001068904A1 Process for stimulating microbial activity in a hydrocarbon-bearing, subterranean formation |
| 09/20/2001 | WO2001068787A1 Method for creating dense drilling fluid additive and composition therefor |
| 09/20/2001 | US20010022224 Cementing spacers for improved well cementation |
| 09/19/2001 | EP1133526A1 Invertible emulsions stabilised by amphiphilic polymers and application to bore fluids |
| 09/18/2001 | US6291406 Method for treating subterranean formations |
| 09/18/2001 | US6291405 Glycol based drilling fluid |
| 09/18/2001 | US6291404 Viscosified aqueous chitosan-containing well drilling and servicing fluids |
| 09/18/2001 | US6290001 Method and composition for sweep of cuttings beds in a deviated borehole |
| 09/18/2001 | US6289989 Use of biodegradable alcoxylation products for cleaning boreholes, boring instruments or borings |
| 09/18/2001 | CA2128807C Encapsulated breakers and method for use in treating subterranean formations |
| 09/18/2001 | CA2048088C Method for gravel packing wells |
| 09/18/2001 | CA2041586C Inhibition of scale formation from oil well brines utilizing a slow release composition |
| 09/13/2001 | WO2001066909A2 Lightweight compositions and methods for well treating |
| 09/13/2001 | WO2001066908A2 Lightweight compositions and methods for sand control |
| 09/13/2001 | WO2001066487A1 Multifunctional additive to cement slurries |
| 09/13/2001 | US20010020531 Comprising brine, hydrophobically associating polymer, the polymer being selected from partially hydrolyzed derivatives of copolymers of monoalkyl- and dialkyl-acrylamides of 4 to 18 carbon atoms with acrylamide, nonionic surfactants |
| 09/13/2001 | CA2401023A1 Lightweight compositions and methods for sand control |
| 09/12/2001 | EP1132570A2 Well acidizing compositions |
| 09/12/2001 | EP1132569A2 Method of treating a subterranean formation |
| 09/12/2001 | EP1132354A1 Multifunctional additive to cement slurries |
| 09/12/2001 | EP1131534A2 Azimuth control of hydraulic vertical fractures in unconsolidated and weakly cemented soils and sediments |
| 09/12/2001 | EP1131476A1 Mercaptoalcohol corrosion inhibitors |
| 09/12/2001 | EP0799364B1 Oil and gas field chemicals |
| 09/11/2001 | US6287052 Material and method for lubricating the metal surfaces of an earth-pressure tunnel boring machine |
| 09/11/2001 | US6286601 Process comprising a reversible forming composition |
| 09/07/2001 | WO2001064813A2 Conductive medium for openhole logging and logging while drilling |
| 09/07/2001 | WO2001064809A1 Viscous fluid applicable for treating subterranean formations |
| 09/07/2001 | CA2401278A1 Conductive medium for openhole logging and logging while drilling |
| 09/07/2001 | CA2398610A1 Viscous fluid applicable for treating subterranean formations |
| 09/07/2001 | CA2339544A1 Methods and acidizing compositions for reducing metal surface corrosion and sulfide precipitation |
| 09/06/2001 | US20010020057 Cement slurries comprising hydrophobic polymers |
| 09/06/2001 | US20010018975 Chemically assisted thermal flood process |
| 09/06/2001 | US20010018973 Hydraulic cement, hydrophilic fibers to improve crack and shatter resistance, and water to form a pumpable slurry |
| 09/05/2001 | EP1130215A2 Stimulating fluid production from unconsolidated formations |
| 09/05/2001 | EP1130074A1 Filtrate reducing additive and well fluid containg it |
| 09/05/2001 | EP1129148A1 Invert emulsion drilling fluids having negative alkalinity |
| 09/05/2001 | EP1129047A1 Cementing compositions and the use of such compositions for cementing oil wells or the like |
| 09/05/2001 | EP1128903A1 Process for treatment of petroleum acids with ammonia |
| 09/04/2001 | US6284714 Pumpable multiple phase compositions for controlled release applications downhole |
| 09/04/2001 | US6283230 Method and apparatus for lateral well drilling utilizing a rotating nozzle |
| 09/04/2001 | US6283212 Method and apparatus for deliberate fluid removal by capillary imbibition |
| 08/30/2001 | WO2001063090A2 Foaming agents for use in coal seam reservoirs |
| 08/30/2001 | US20010018470 Well completion |
| 08/30/2001 | US20010017223 Non -cryogenic nitrogen for on-site downhole drilling and post drillingoperations |
| 08/29/2001 | EP1128021A2 Solids-free viscous fluids |
| 08/28/2001 | US6281172 Rheological control agent |
| 08/28/2001 | US6281002 Adding thiospaera to inhibit growth of anaerobically growing microorganisms |
| 08/28/2001 | US6280519 Environmentally preferred fluids and fluid blends |
| 08/28/2001 | US6279656 For treating well bores |
| 08/28/2001 | US6279655 Thixotropic materials |
| 08/28/2001 | US6279392 Method and system for distributed well monitoring |
| 08/28/2001 | CA2038109C Liquid membrane catalytic scale dissolution method |
| 08/23/2001 | WO2001061148A2 Filter cake cleanup and gravel pack methods for oil based or water based drilling fluids |
| 08/23/2001 | WO2001061147A1 Circulation tool for use in gravel packing of wellbores |
| 08/23/2001 | US20010016562 Encapsulated breakers, compositions and methods of use |
| 08/23/2001 | US20010016561 Spotting fluid and method of treating a stuck pipe |
| 08/22/2001 | EP1126131A1 Completing unconsolidated subterranean producing zones |
| 08/21/2001 | US6277900 Water-soluble copolymers used for reducing water loss in cement slurries for cementing subterranean wells |
| 08/21/2001 | US6277792 Viscosified aqueous fluids and viscosifier therefor |
| 08/16/2001 | WO2001059257A1 Method of reducing the specific gravity of a crude oil, a hydrocarbon liquid therefor and use of a hydrocarbon liquid |
| 08/16/2001 | WO2001059256A1 Invert well service fluid and method |
| 08/16/2001 | WO2001059255A1 Method of treating reservoir zone of hydrocarbon producing well to inhibit water production problems |
| 08/16/2001 | WO2001059254A1 Synthetic crosslinked copolymer solutions and direct injection to subterranean oil and gas formations |
| 08/16/2001 | WO2001059182A1 Method of pre-treatment for inhibiting sulphide corrosion |
| 08/16/2001 | WO2001059028A2 Shale hydration inhibition agent and method of use |
| 08/16/2001 | US20010014651 Dry-blending flow control agent comprised of solid adsorbent having absorbed polar molecule; storage stability; handling |
| 08/16/2001 | EP1123907A2 Cementing casing strings in deep wells |
| 08/16/2001 | EP1103589A9 Drilling fluids comprising oil emulsions in water |