| 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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| 06/16/1995 | CA2138185A1 Structured surfactants |
| 06/15/1995 | WO1995016104A1 A method of scale dissolution in a formation containing multiple productive intervals |
| 06/15/1995 | CA2174770A1 A method of scale dissolution in a formation containing multiple productive intervals |
| 06/14/1995 | EP0657618A1 Fluid loss control additives |
| 06/14/1995 | EP0656987A1 Improved additive composition for oil well cementing formulations |
| 06/14/1995 | EP0597976B1 Improved calcium carboxylate antiwear additives |
| 06/13/1995 | US5424285 Mixing liquid carbon dioxide, nitrogen gas and aqueous media, transporting to well bore |
| 06/13/1995 | US5424284 Quaternized trihydroxyalkylamine is added to water base drilling fuid which are circulated throughout the well; improved rheology and pollution control |
| 06/13/1995 | US5424283 Drilling muds effective at high temperature |
| 06/13/1995 | US5423381 Well completion |
| 06/13/1995 | US5423380 Process for treating oil-bearing formation |
| 06/13/1995 | US5423379 Method for drilling and cementing a well |
| 06/13/1995 | CA2096118C Enhanced liquid hydrocarbon recovery process |
| 06/08/1995 | WO1995015364A1 Drilling fluid |
| 06/08/1995 | WO1995015296A1 Oil-in-water emulsions as microbicide (biocide) substitutes in water carrying systems |
| 06/06/1995 | US5422183 Composite and reinforced coatings on proppants and particles |
| 06/06/1995 | US5421881 Comprising graft polymer of ketone, aldehyde, acid and acrylic monomer |
| 06/06/1995 | US5421879 Monomer units of acrylic acid or methacrylic acid and acrylamide or a derivative of acrylamide; subterranean zones in wells |
| 06/06/1995 | US5421418 Flocculating zinc charge debris |
| 06/06/1995 | US5421412 Injecting under pressure a fracturing fluid comprising a polysaccharide and an enzyme breaker which degrades the polysaccharide, releasing pressure |
| 06/06/1995 | US5421411 Adding crosslinking solution containing chromium complex and metal carboxylate delaying agent to acrylamide polymer forming gel; improved hydrocarbon recovery |
| 06/06/1995 | US5421410 Plugging of underground strata to eliminate gas and water coning during oil production |
| 06/06/1995 | US5421409 Slag-based well cementing compositions and methods |
| 06/01/1995 | WO1995014643A1 Grouting composition and method |
| 06/01/1995 | CA2177041A1 Grouting composition and method |
| 05/31/1995 | CN1103102A Effective hydrocarbon blend for removing asphaltenes |
| 05/30/1995 | US5420370 Fluid flow of water clathrates withn polyvinylpyrrolidone |
| 05/30/1995 | US5420174 Method of producing coated proppants compatible with oxidizing gel breakers |
| 05/30/1995 | CA2047653C In-situ heated annulus refining process |
| 05/26/1995 | WO1995014066A1 Method of treating shale and clay in hydrocarbon formation drilling |
| 05/24/1995 | EP0654582A1 Reducing aluminium compound precipitation in subterranean formation acidizing |
| 05/24/1995 | EP0654516A1 Drill and cementation fluid |
| 05/24/1995 | EP0653931A1 Industrial, pharmaceutical and cosmetic applications for cultured plant cell gums |
| 05/23/1995 | US5418271 Coating composition comprising solids having reversible stress-induced fluidity |
| 05/23/1995 | US5418217 Composition for selectively reducing subterranean formation permeability |
| 05/23/1995 | US5417845 Use of decahydro pyrazino [2,3-b] pyrazine for the reduction of the proportion of free or combined hydrogen sulphide present in a fluid |
| 05/23/1995 | US5417287 Ferric salts and phosphate esters as gelling agents |
| 05/19/1995 | CA2136131A1 Reducing aluminum compound precipitation following subterrannean formation acidizing |
| 05/17/1995 | EP0653547A1 Additive for well cement |
| 05/17/1995 | EP0652922A1 Mineral additives for setting and/or controlling the rheological properties and gel structure of aqueous liquids, and the use of such additives. |
| 05/17/1995 | EP0186663B1 Gel and process for retarding fluid flow |
| 05/16/1995 | US5415696 Milling the scale with a head, injection of solvent with chelate compound |
| 05/16/1995 | US5415232 Method and apparatus for ramping of stimulation chemical concentrations for treatment of subterranean formations |
| 05/16/1995 | US5415230 In a well bore |
| 05/16/1995 | US5415229 Chromium-polycarboxylic acid complex |
| 05/16/1995 | US5415228 Fluid loss control additives for use with gravel pack placement fluids |
| 05/16/1995 | CA2101884E Invert emulsion drilling mud |
| 05/11/1995 | WO1995012741A1 Well cleanout system and method |
| 05/10/1995 | EP0652272A1 Glycols as internal phase in oil well drilling fluids |
| 05/10/1995 | EP0652271A1 Well fluid additive |
| 05/09/1995 | US5413718 Use of added water to achieve 100% injection weight in geothermal operations |
| 05/09/1995 | US5413178 Method for breaking stabilized viscosified fluids |
| 05/09/1995 | US5413177 Recovering hydrocarbons from underground reservoirs |
| 05/05/1995 | CA2135028A1 Glycols as internal phase in oil well drilling fluids |
| 05/04/1995 | DE4337337A1 Process for the preparation of polysuccinimide |
| 05/03/1995 | EP0651131A2 Control of water flow from subterranean formation |
| 05/03/1995 | EP0651074A1 Biodegradable corrosion inhibitors of low toxicity |
| 05/03/1995 | EP0650995A2 Process for preparing aspartic acid polymers |
| 05/03/1995 | EP0650514A1 Earth support fluid composition and method for its use |
| 05/02/1995 | US5412115 Polycondensation of phenolic hydroxyl-containing compounds and polyhydric alcohols and thermal condensation to form polyethercyclicpolyols |
| 05/02/1995 | US5411670 Method and composition for protecting metal surfaces from oxidative environments |
| 05/02/1995 | US5411094 Imbibition process using a horizontal well for oil production from low permeability reservoirs |
| 05/02/1995 | US5411093 Method of enhancing stimulation load fluid recovery |
| 05/02/1995 | US5411092 Optimizing blast furnace slag cements |
| 05/02/1995 | US5411086 Diatomaceous earth reservoirs with fracturing with water mixtures |
| 04/27/1995 | WO1995011225A1 Use of terminal group capped fatty acid amide alkoxylates |
| 04/27/1995 | CA2173335A1 Use of terminal group capped fatty acid amide alkoxylates |
| 04/26/1995 | EP0649972A1 Water flow control in subterranean formation |
| 04/26/1995 | EP0649864A1 Hydrosoluble polymers and their use as additives in drilling fluids |
| 04/25/1995 | US5409614 Control of scale deposition in geothermal operations |
| 04/25/1995 | US5409064 Optimizing blast furnace slag cements |
| 04/25/1995 | US5409063 Optimizing blast furnace slag cements |
| 04/25/1995 | US5409062 Method of inhibiting reservoir scale |
| 04/23/1995 | CA2130145A1 Water control with hydroxy unsaturated carbonyls |
| 04/23/1995 | CA2126956A1 Water control |
| 04/20/1995 | WO1995010688A1 High viscosity cross-linked gelled alcohol |
| 04/18/1995 | US5407909 Earth support fluid composition and method for its use |
| 04/18/1995 | US5407879 Promoting absorption or adsorption by treating with aqueous polymer solution, then drying to controlled moisture content |
| 04/18/1995 | US5407475 Hydroxyethyl cellulose dispersed in aqueous solution of sodium thiosulfate |
| 04/18/1995 | US5407009 A horizontal fructure is created below reservoir by hydraulic pressure, a mixture of low solubility gas and solvent is introduced into fracture to leach the heavy oil or bitumen to create a flow passage within the matrix above the fracture |
| 04/13/1995 | WO1995009900A1 Defoamers |
| 04/12/1995 | EP0647768A2 Methods of using acidizing fluids in wells, and compositions used therein |
| 04/12/1995 | EP0647210A1 Scavenging of hydrogen sulphide |
| 04/11/1995 | US5404951 Well treatment with artificial matrix and gel composition |
| 04/11/1995 | US5404950 Enhanced oil recovery |
| 04/11/1995 | CA1335154C Oil recovery using co _flooding |
| 04/07/1995 | CA2133539A1 Methods of using acidizing fluids in wells, and compositions used therein |
| 04/06/1995 | WO1995009293A1 Use of steam condensate to dilute brine stream additives |
| 04/06/1995 | WO1995009292A1 Use of added water to achieve 100 % injection weight in geothermal operations |
| 04/06/1995 | WO1995009283A1 Control of iron deposition in borehole pumps |
| 04/06/1995 | WO1995009215A1 Non toxic, biodegradable well fluids |
| 04/06/1995 | CA2172965A1 Non toxic, biodegradable well fluids |
| 04/05/1995 | EP0646216A1 Stabilizing compositions and methods for stabilizing subterranean formations. |
| 04/04/1995 | US5403822 Environmentally friendly |
| 04/04/1995 | US5403821 Water soluble copolymer containing a unsaturated acid and allyl ether compound |
| 04/04/1995 | US5403820 Environmentally safe water base drilling fluid |
| 04/04/1995 | US5403493 Supplying aqueous, alkaline solution containing anionic polymer having carboxylate and/or sulfonate sites, carbohydrazide |
| 04/04/1995 | US5402849 Use of dual density spacer fluids to improve cementing efficiency in horizontal wellbores |
| 04/04/1995 | US5402846 Pumping foamable thermosetting mixture into reservoir to fracture formation, igniting and combusting mixture to form porous solid which props fracture and increases conductivity of reservoir |
| 04/04/1995 | CA1335035C Lightweight oil and gas well proppants and methods for making and using same |