| 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) |
|---|
| 04/04/2000 | US6046140 Acid gels for fracturing subterranean formations |
| 04/04/2000 | US6045723 Compositions and compounds to minimize hydrogen charging and hydrogen induced cracking of steels |
| 04/04/2000 | US6045702 Separating said water-soluble polymer into a plurality of permeate and retentate phases using an organic or mineral membrane by differences therebetween in hydrodynamic volume in a continuous or batch process |
| 03/30/2000 | WO2000017484A1 Method for dissolution, storage and transportation of gas hydrates |
| 03/29/2000 | EP0764061A4 Method for removing alkaline earth metal scale |
| 03/28/2000 | US6043391 Anionic surfactants based on alkene sulfonic acid |
| 03/28/2000 | US6043203 Compositions based on APG and ester quat surfactants |
| 03/28/2000 | US6042713 Method for removing metal contaminants |
| 03/28/2000 | US6041873 Non-cryogenic nitrogen for on-site downhole drilling and post drilling operations |
| 03/28/2000 | CA2163926C Apolar medium gel and use of said for the preparation of water-based drilling fluids |
| 03/22/2000 | EP0866779B1 Methods for improved rheological control in cementitious systems |
| 03/21/2000 | US6040276 Stabilizing, controlling the filtration of a drilling, a well completion by adding a predetermined amount of at least one hydrophobically modified hydroxyethylcellulose |
| 03/21/2000 | CA2064667C Fire retarded solvents |
| 03/15/2000 | EP0877717B1 Cement compositions including additives |
| 03/14/2000 | US6036765 Mineral clay mixture treated with alkyl quaternary ammonium salt; drilling fluids |
| 03/14/2000 | US6035936 Viscoelastic surfactant fracturing fluids and a method for fracturing subterranean formations |
| 03/14/2000 | US6035933 Process for the thermo-hydraulic control of gas hydrates |
| 03/14/2000 | CA2160098C Polymer enhanced foam drilling fluid |
| 03/09/2000 | WO2000011949A1 Particulate carrier for biocide formulations |
| 03/09/2000 | DE19840632A1 Water-based drilling fluid useful in underground drilling contains alkali carboxylate and soluble boron compound as corrosion inhibitor |
| 03/08/2000 | EP0983420A1 Low toxicity corrosion inhibitor |
| 03/08/2000 | EP0741679B1 Storable liquid cementitious slurries for cementing oil and gas wells |
| 03/07/2000 | US6034037 Non-toxic inexpensive synthetic drilling fluid |
| 03/01/2000 | EP0774096B1 A method for inhibiting hydrate formation |
| 03/01/2000 | EP0616660B1 Method of propagating a hydraulic fracture using fluid loss control particulates |
| 02/29/2000 | US6030928 Polymers useful in the recovery and processing of natural resources |
| 02/29/2000 | US6029755 Conductive medium for openhole logging and logging while drilling |
| 02/24/2000 | WO2000009625A1 Shale-stabilizing additives |
| 02/23/2000 | EP0980957A1 Composition for sealing pipe in well bore |
| 02/23/2000 | EP0871685A4 Preparation of hydrocarbon gels from ferric sources, polycarboxylic acid compounds, and optional amines, in combination with phosphate esters |
| 02/22/2000 | US6028233 Preventing the clathrate hydrates forming in conveying pipe by treating the fluid with a water soluble copolymer of n-vinyl amide |
| 02/18/2000 | CA2280388A1 Compositions and methods for sealing pipe in well bores |
| 02/17/2000 | WO2000008112A1 Bromate/bromine filtercake removal fluid |
| 02/17/2000 | CA2337836A1 Bromate/bromine filter cake removal fluid |
| 02/16/2000 | EP0979856A1 Excavation-stabilizing slurry, production process therefor and excavation method |
| 02/16/2000 | EP0979833A2 High temperature viscosity stable thickener |
| 02/16/2000 | CN1244565A Stable slurry for digging, its preparing method and digging method |
| 02/15/2000 | US6025304 Improving hydrocarbon recovery from formation |
| 02/15/2000 | US6025303 Solids composition based on clay minerals and use thereof |
| 02/15/2000 | US6025302 Coat and commingle with hydrate crystals, thereby interfering with agglomeration of small particles into large ones which can plug subterranean formations, gas pipelines, equipment |
| 02/15/2000 | US6024170 Polygalactomannan gelling agent; hydrocarbon oil, organophilic clay, buffer and dispersant; treating well bores |
| 02/15/2000 | US6024167 Transporting waterflood mobility control agents to high permeability zones |
| 02/13/2000 | CA2280170A1 High temperature viscosity stable thickener |
| 02/10/2000 | WO2000009856A1 Crude-oil extraction method |
| 02/10/2000 | WO2000006664A1 Wellbore fluid |
| 02/10/2000 | CA2279876A1 Oil production method |
| 02/08/2000 | US6022834 Enhanced oil recovery comprising a primary concentrated aqueous surfactant, an alkali, and brine provides ultra-low interfacial tension between the residual oil and the injection solution; forming salts; emulsifying oil; penetration |
| 02/08/2000 | US6022833 Multicomponent mixtures for use in geological exploration |
| 02/03/2000 | WO2000005324A1 Method for using biodegradable drilling fluid |
| 02/03/2000 | WO2000005323A1 Aphron-containing well drilling and servicing fluids of enhanced stability |
| 02/03/2000 | WO2000005322A1 Polysaccharide-containing well drilling and servicing fluids |
| 02/03/2000 | WO2000005302A1 Composite proppant, composite filtration media and methods for making and using same |
| 02/02/2000 | EP0976911A1 Scale inhibitors |
| 02/02/2000 | EP0976853A1 Method for removing alkaline earth metal sulfate scale from a boiler or heat exchanger with use of sonic energy |
| 02/02/2000 | EP0975708A1 Methods and materials for degrading xanthan |
| 02/02/2000 | EP0975420A1 Synergistic mixtures of alkyl phenol formaldehyde resins with oxalkylated amines as asphalt dispersing agents |
| 02/02/2000 | CN1048965C Oil-well cement |
| 02/01/2000 | US6020289 Polymers for drilling and reservoir fluids and their use |
| 02/01/2000 | US6019903 Geothermal brine composition having a ph between about 4.5 and about 6.0 comprising a mixture of an acid sulfate brine and a near neutral, bicarbonate brine containing above about 275 ppm silica. |
| 02/01/2000 | CA2251366C Controlled gel breaker |
| 02/01/2000 | CA2030535C Method of decontaminating earth and/or natural gas processing equipment |
| 01/27/2000 | CA2277681A1 Scale inhibitors |
| 01/26/2000 | EP0973843A1 Well servicing fluid for trenchless directional drilling |
| 01/26/2000 | EP0973698A1 Cementitious compositions and methods for use in subterranean wells |
| 01/26/2000 | EP0772696B1 Method for removing alkaline sulfate scale |
| 01/26/2000 | EP0675936B1 Environmentally safe drilling fluid |
| 01/25/2000 | US6017856 As drilling fluids, completion fluids fluids, packer fluids, well treating fluids, subterranean formation testing fluids, spacer fluids and hole abandonment; enhanced density; noncaking |
| 01/25/2000 | US6017855 Polymer expansion for oil and gas recovery |
| 01/25/2000 | US6017854 Simplified mud systems |
| 01/25/2000 | US6016879 Lost circulation additive, lost circulation treatment fluid made therefrom, and method of minimizing lost circulation in a subterranean formation |
| 01/25/2000 | US6016872 Method for removing debris from a well-bore |
| 01/25/2000 | US6016871 Injecting a water soluble polymer; crosslinking |
| 01/25/2000 | US6016870 Compositions and methods for consolidating unconsolidated subterranean zones |
| 01/25/2000 | US6016869 Well kill additive, well kill treatment fluid made therefrom, and method of killing a well |
| 01/19/2000 | EP0862603B1 Well fluid |
| 01/19/2000 | CN1048518C Additives composition using for blended drilling fluid and its producing process |
| 01/18/2000 | US6015929 Gas hydrate anti-agglomerates |
| 01/18/2000 | US6015535 Process for producing purified cesium compound from cesium alum |
| 01/18/2000 | CA2015193C Thickened aqueous compositions |
| 01/13/2000 | WO2000001746A1 Zwitterion derivatives and application to aqueous suspension properties |
| 01/12/2000 | EP0970026A1 Fluid loss control agents and compositions for cementing oil wells comprising said fluid loss control agent |
| 01/12/2000 | CN1241238A Method for stabilizing gas flow in water-bearing natural gas deposits or reservoirs |
| 01/11/2000 | US6013200 Low toxicity corrosion inhibitor |
| 01/11/2000 | US6012524 Remedial well bore sealing methods and compositions |
| 01/11/2000 | CA2125274C Drilling mud additive |
| 01/06/2000 | WO2000000569A1 A lubricating method for silicate drilling fluids |
| 01/05/2000 | EP0969182A2 Well sealing composition and method |
| 01/05/2000 | EP0968323A1 Sulphydryl acid and imidazoline salts as inhibitors of carbon corrosion of iron and ferrous metals |
| 01/05/2000 | EP0914407B1 Method of inhibiting gas hydrate formation |
| 01/05/2000 | EP0729497B1 Wellbore fluids |
| 01/05/2000 | EP0669844B1 Method for preparing viscoelastic surfactant based foam fluids |
| 01/04/2000 | US6011075 Treating subterranean formations; water soluble crosslinkable polymeric gel forming material and a crosslinking agent in an amount sufficient to crosslink said material, and a gel strengthening amount of an inert colloidal particulate |
| 01/04/2000 | CA2197802C A method for inhibiting hydrate formation |
| 12/30/1999 | DE19828352A1 Synergistische Mischungen von Phosphorsäureestern mit Carbonsäuren oder Carbonsäurederivaten als Asphalten-Dispergatoren A synergistic mixture of phosphoric acid esters with carboxylic acids or carboxylic acid derivatives as asphaltene dispersants |
| 12/30/1999 | CA2276539A1 Well sealing compositions and methods |
| 12/29/1999 | EP0967361A1 Synergistic mixtures of phosphoric acid esters with carboxylic acid derivatives as dipersants for asphaltenes |
| 12/29/1999 | EP0966593A1 Process for removing solid asphalt residues produced in the petroleum industry |
| 12/29/1999 | EP0966505A1 Reticulated bacterial cellulose as a rheological modifier for polyol fluid compositions |
| 12/28/1999 | USRE36466 Flowback of particulates resulting from unconsolidated formation fines through perforations in a wellbore casing is prevented by fracturing using a mixture of fibers and particle in combination with resin consolidation |
| 12/28/1999 | US6006836 Methods of sealing plugs in well bores |