| 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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| 10/12/1999 | US5964290 Chemically induced stimulation of cleat formation in a subterranean coal formation |
| 10/07/1999 | WO1999050530A1 Method and compositions for water control |
| 10/07/1999 | WO1999050529A1 Surfactant based gelling composition for wellbore service fluids |
| 10/07/1999 | WO1999050370A1 Derivatization of polymers and well treatments using same |
| 10/07/1999 | CA2290361A1 Derivatization of polymers and well treatments using same |
| 10/06/1999 | EP0947608A1 Environmentally benign acid corrosion inhibitor |
| 10/06/1999 | EP0946788A1 Method for protecting metal surfaces against corrosion in liquid or gaseous media |
| 10/06/1999 | EP0946688A1 Additives to inhibit the formation of gas hydrate |
| 10/06/1999 | EP0946679A1 Use of sarcosinates as asphaltene dispersants |
| 10/06/1999 | EP0946669A1 Multiphase lubricant concentrates for use in water based systems in the field of exploratory soil drilling |
| 10/06/1999 | EP0946470A1 A method for preventing or retarding the formation of gas hydrates |
| 10/05/1999 | US5962375 Wellbore fluids |
| 10/05/1999 | US5961885 A dispersant, an imidazoline, an amide, an alkyl pyridine and a heavy aromatic solvent. |
| 10/05/1999 | US5961836 Method of producing milling adjuvants and/or dispersive agents, by physicochemical separation; adjuvants and agents thus obtained; and uses of same |
| 10/05/1999 | US5960880 Unconsolidated formation stimulation with sand filtration |
| 10/05/1999 | US5960878 Methods of protecting well tubular goods from corrosion |
| 10/05/1999 | US5960877 Polymeric compositions and methods for use in well applications |
| 09/30/1999 | WO1999049183A1 Hydrophobically modified polymers for water control |
| 09/30/1999 | WO1999049182A1 Surface-active acidic composition |
| 09/30/1999 | WO1999048994A1 A mixed formate and bromide brine used in drilling fluids |
| 09/30/1999 | CA2286140A1 Acid surfactant composition |
| 09/29/1999 | EP0850209A4 Method for inhibiting hydrate formation |
| 09/28/1999 | US5958845 Non-toxic, inexpensive synthetic drilling fluid |
| 09/28/1999 | US5958844 Nonionic amphiphilic composition obtained by reacting a polymerized unsaturated vegetable oil with at least one aminoalcohol is incorporated into the fluid of water, a gas and liquid hydrocarbon to prevent hydrate caused blockage |
| 09/28/1999 | US5957204 Placing a liquid epoxy composition between said conduit and the walls of the well bore and hardening to form a flexible and resilient seal that can withstand stress induced by conduit movement |
| 09/28/1999 | US5957203 Ultra-high temperature stable gels |
| 09/23/1999 | WO1999047624A1 Compositions and processes for oil field applications |
| 09/22/1999 | EP0800562A4 Delayed breaking of gelled hydrocarbon fracturing fluid |
| 09/22/1999 | EP0777837A4 A method for inhibiting hydrate formation |
| 09/22/1999 | EP0653931B1 Industrial, pharmaceutical and cosmetic applications for cultured plant cell gums |
| 09/22/1999 | CN1229404A Method for producing sulfate cement or sulfate cement aggregates |
| 09/21/1999 | US5955552 Shearing a biphasic liquid system of an aqueous solution and a polyunsaturated monomer dissolved in a water-immiscible organic solvent to suspend the organic phase as microdroplets; polymerization |
| 09/21/1999 | US5955401 Dry mixture of pre-gelatinized corn starch and synthetic biopolymer added to salt-free water as fluid for drilling horizontal wells for in situ bioremediation of contaminated groundwater |
| 09/21/1999 | US5955144 Improved resin coated particle comprises a particulate substrate, an inner coating of a curable resin and an outer coating of a substantially cured resin; use as a proppant in hydraulic fracturing of subterranean formations |
| 09/21/1999 | US5954967 Separation of water soluble, neutralized anionic vinyl, acrylic, or condensation polymer through organic or mineral membrane into different molecular weight fractions |
| 09/21/1999 | US5954132 Patching of injection and production well annular casing leaks for restoring mechanical integrity |
| 09/21/1999 | CA2030541C Sulfate scale dissolution |
| 09/15/1999 | EP0667890B1 Wellbore fluid |
| 09/14/1999 | US5951910 Reticulated bacterial cellulose as a rheological modifier for polyol fluid compositions |
| 09/14/1999 | US5950731 Methods and compositions for breaking viscosified fluids |
| 09/14/1999 | US5950729 Using gelation additive for hydraulic fracturing fluids |
| 09/14/1999 | CA2071849C Method of supporting fractures in geological formations and hydraulic fluid composition for same |
| 09/10/1999 | WO1999044962A1 Retarding systems and application to oil well cementing |
| 09/08/1999 | EP0939855A1 Additives for inhibiting formation of gas hydrates |
| 09/08/1999 | EP0686177B1 Process for producing skeletally isomerized linear olefins |
| 09/07/1999 | US5948735 Use of breaker chemicals in gelled hydrocarbons |
| 09/07/1999 | US5948734 Well treatment fluid compatible self-consolidating particles |
| 09/07/1999 | US5948733 For subterranean formations; mixture of starch and mica |
| 09/07/1999 | US5948651 Preparation of water-soluble non-acetylated polysaccharide polymer having repeating pentamer units with xanthomonas |
| 09/07/1999 | US5948237 Use of sarcosinates as asphaltene-dispersing agents |
| 09/07/1999 | US5947644 Construction of a fluid impermeable subterranean barrier wall |
| 09/07/1999 | CA2091541C Anionic compositions for sludge prevention and control during acid stimulation of hydrocarbon wells |
| 09/02/1999 | WO1999043923A1 Compositions for use in well construction, repair and/or abandonment |
| 09/01/1999 | CN1227589A Fluid containing cellulose nanofibrils and use for producing petroleum ore deposit |
| 08/31/1999 | US5945387 Polymeric well completion and remedial compositions and methods |
| 08/31/1999 | US5945386 Glycol and glycol ether lubricants and spotting fluids |
| 08/31/1999 | US5945385 Method and composition for reducing torque in downhole drilling |
| 08/31/1999 | US5944106 Gelating aqueous fluids |
| 08/31/1999 | US5944104 Method of increasing the methane recovery from a subterranean formation |
| 08/31/1999 | CA2140736C A thixotropic fluid for well insulation |
| 08/31/1999 | CA2128023C Iterated foam process and composition for well treatment |
| 08/26/1999 | WO1999042700A1 Improvements in or relating to reducing water flow |
| 08/26/1999 | WO1999042539A1 Anti-accretion additives for drilling fluids |
| 08/25/1999 | EP0937193A1 Method of remediation of contaminants in porous media through minimization of buoyancy effects |
| 08/24/1999 | US5942469 Foamy emulsion having gas phase of water vapor and carbon dioxide and/or methane, continuous liquid phase of crude oil and brine, dispersed phase containing defoaming agent and demulsifying agent, water and optional stabilizer |
| 08/24/1999 | US5942468 Invert emulsion well drilling and servicing fluids |
| 08/24/1999 | US5942467 Can be used with pre-existing water based muds for efficient drilling applications; lubricity, minimized shale hydration, enhanced rate of penetration, and cleaner drill string, lower fluid loss and thinner filter cake |
| 08/24/1999 | US5942031 Expanding additive for cement composition |
| 08/24/1999 | CA2115390C Fluid composition comprising a metal aluminate or a viscosity promoter and a magnesium compound and process using the composition |
| 08/19/1999 | WO1999041342A1 Surfactant composition and methods for cleaning wellbore and oil field surfaces |
| 08/18/1999 | EP0936345A1 Method of protecting well tubular goods from corrosion |
| 08/18/1999 | EP0936263A1 Bentonite based drilling mud and drilling process using it |
| 08/18/1999 | EP0935700A1 Use of biodegradable alcoxylation products for cleaning boreholes, boring instruments or borings |
| 08/18/1999 | EP0912651A4 Clay-free biodegradable wellbore fluid and method for using said fluid |
| 08/17/1999 | US5939475 Organic fluid systems containing clay/polyamide compositions |
| 08/17/1999 | US5939362 Enhanced corrosion protection by use of friction reducers in conjuction with corrosion inhibitors |
| 08/17/1999 | US5937949 Process for the consolidation of sand |
| 08/17/1999 | CA2159406C Process for the extraction of crude oil |
| 08/11/1999 | CN1225703A Use of oil and gas field chemicals |
| 08/11/1999 | CN1225691A Corrosion inhibition |
| 08/11/1999 | CA2261480A1 Application of aluminium chlorohydrate in viscosifying brine for carrying proppants in gravel packing |
| 08/10/1999 | US5936040 Maleimide copolymers with (meth)acrylamide derivaatives, n-vinyl-n-heterocycle derivatives and/or 2-vinyl-2-oxazolines reduce the forming of clathrate hydrates in pipes conveying petroleum/natural gas to prevent blocking; antiagglomerants |
| 08/10/1999 | US5934303 Process for moving heavy crude oils with water having a high content of salts |
| 08/10/1999 | CA2151152C Method of treating shale and clay in hydrocarbon formation drilling |
| 08/05/1999 | WO1999039025A1 Ecologically compatible carbon corrosion inhibitors of iron |
| 08/05/1999 | WO1999038931A1 Liquid compositions which reversibly viscosify or gel under the effect of shear |
| 08/04/1999 | EP0933498A1 Method of rapidly consolidating particulate materials in wells |
| 08/04/1999 | EP0933415A2 Additives for inhibition of gas hydrates formation |
| 08/04/1999 | EP0933414A1 Reducing the amount of water produced with hydrocarbons from wells |
| 08/04/1999 | EP0933124A1 Method for preparing an injectable and in situ gelable mixture in a confined space |
| 08/04/1999 | EP0932746A2 Use of alkanesulphonic acids as asphaltene dispersants |
| 08/03/1999 | CA2134980C Microencapsulated oil field chemicals and process for their use |
| 08/03/1999 | CA2099012C Well cleanout using caustic alkyl polyglycoside compositions |
| 08/03/1999 | CA1340691C Methods for treating hydrocarbon recovery operations and industrial waters |
| 07/29/1999 | WO1999037884A1 Method of cleaning a well bore prior to cementing |
| 07/29/1999 | WO1999037594A1 Universal well cement additives and methods |
| 07/29/1999 | WO1999037396A1 Microencapsulated drag reducing agents |
| 07/29/1999 | CA2259001A1 Preparation process for an injectable, gelifiable mixture in situ in a confined space |
| 07/28/1999 | EP0931787A1 Process for preparing maleamic acid |
| 07/27/1999 | US5929002 Fluid loss control |