| 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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| 01/26/1999 | USRE36066 Oil recovery |
| 01/26/1999 | US5862869 Non-cryogenic nitrogen for on-site downhole drilling and post drilling operations |
| 01/21/1999 | WO1999003037A1 Host microprocessor with apparatus for temporarily holding target processor state |
| 01/21/1999 | WO1999002464A1 Cement composition containing synthetic hectorite clay |
| 01/21/1999 | DE19730085A1 Ethercarbonsäuren als Asphalten-Dispergatoren in Rohölen Ether carboxylic acids as asphaltene dispersants in crude oils |
| 01/19/1999 | US5861362 Well working fluid |
| 01/14/1999 | WO1999001397A1 Cementing compositions and application thereof to cementing oil or analogous wells |
| 01/14/1999 | WO1998038409A3 Mixture to increase oil layer recovery |
| 01/13/1999 | EP0890014A1 Method and system for monitoring a characteristic of an earth formation in a well |
| 01/13/1999 | EP0774096A4 A method for inhibiting hydrate formation |
| 01/12/1999 | US5858928 Gel of an apolar medium, its use for the preparation of water-based drilling fluids |
| 01/12/1999 | US5858927 Aqueous external crystal modifier dispersion |
| 01/12/1999 | US5858766 Contacting heavy crude oil with specified bacterial strains to reduce content of sulfur, nitrogen and trace metals and increase content of saturated hydrocarbons |
| 01/07/1999 | EP0889197A1 Method of plugging subterranean zone |
| 01/07/1999 | EP0796387B1 Material and method for lubricating the metal surfaces of an earth-pressure tunnel boring machine |
| 01/05/1999 | US5855244 Compositions and processes for treating subterranean formations |
| 01/05/1999 | US5855243 Method for recovering hydrocarbons from a subterranean formation |
| 01/05/1999 | CA2023784C Method for the removal of aqueous liquids from the sump of an underground cavity |
| 12/30/1998 | WO1998059014A1 Filtrate reducing additive and well fluid |
| 12/30/1998 | EP0887396A1 Composition of solids based on clay minerals and their use |
| 12/30/1998 | EP0886719A1 A process and a formulation to inhibit scale in oil field production |
| 12/30/1998 | EP0886718A1 Oil and gas field chemicals |
| 12/30/1998 | EP0853651A4 Cleaning compositions for oil and gas wells, lines, casings, formations and equipment and methods of use |
| 12/30/1998 | EP0812307B1 Method for inhibiting hydrate formation |
| 12/30/1998 | CN1203308A Chemically induced permeability enhancement of subterranean coal formation |
| 12/30/1998 | CA2263952A1 Filtrate reducing additive and well fluid |
| 12/29/1998 | US5854180 Environmentally improved acid corrosion inhibitor |
| 12/29/1998 | US5853620 Compositions and compounds to minimize hydrogen charging and hydrogen induced cracking of steels |
| 12/29/1998 | US5853619 Low toxic corrosion inhibitor |
| 12/29/1998 | US5853048 Control of fine particulate flowback in subterranean wells |
| 12/23/1998 | EP0885277A1 Substantially linear ethylene/alpha-olefin polymers as viscosity index improvers or gelling agents |
| 12/23/1998 | CN1202922A Cleaning compositions for oil and gas well, lines, casings, formations and equipment and its methods of use |
| 12/23/1998 | CN1041313C Suspending medium for water soluble polymer |
| 12/22/1998 | US5851961 Anti-settling lubricity agent for water/oil dispersion compositions |
| 12/22/1998 | US5851960 Method of performing well drilling operations with a foamable drilling fluid |
| 12/22/1998 | US5851959 High temperature stable modified starch polymers and well drilling fluids employing same |
| 12/22/1998 | US5851958 Olefins and lubricants, rate of penetration enhancers, and spotting fluid additives for water-based drilling fluids |
| 12/22/1998 | US5850880 Composition and method to control cement slurry loss and viscosity |
| 12/22/1998 | CA2120310C Fly ash cementing compositions and methods |
| 12/17/1998 | WO1998056870A1 A method for producing a plugging liquid on a polysaccharide basis |
| 12/17/1998 | WO1998056869A1 A method for producing a plugging liquid on a polysaccharide basis |
| 12/17/1998 | WO1998056868A1 A method for producing a plugging liquid on a polysaccharide basis |
| 12/17/1998 | WO1998056497A1 Fluids containing viscoelastic surfactant and methods for using the same |
| 12/16/1998 | EP0884369A1 Well drilling and servicing fluids and methods of increasing the low shear rate viscosity thereof |
| 12/15/1998 | US5849674 Compositions and processes for oil field applications |
| 12/10/1998 | WO1998055733A1 Clay stabilizing agent and a method of use in subterranean formations to inhibit clay swelling |
| 12/09/1998 | EP0882297A1 Treatment of radioactive material |
| 12/09/1998 | EP0803024A4 Method of degrading cellulose-containing fluids during completion operations of oil and gas wells |
| 12/09/1998 | CN1041099C Acid catalyzed process for preparing amino acid polymers |
| 12/08/1998 | US5846915 Delayed breaking of gelled hydrocarbon fracturing fluid |
| 12/08/1998 | US5846914 Process and fluids for the treatment of oil wells |
| 12/08/1998 | US5846913 Invert biodegradable n-alkane(s) wellbore fluid containing less than 10 percent by weight of cycloparaffing isoparaffing and aromatic compounds, and method of drilling with such fluid |
| 12/08/1998 | CA2126422C Consolidatable particulate material and well treatment method |
| 12/03/1998 | WO1998054432A2 Mud suspension control system |
| 12/03/1998 | WO1998054272A1 Improved polymer expansion for oil and gas recovery |
| 12/02/1998 | EP0881356A2 Preparation of aromatic amines and their use as metal corrosion inhibitors |
| 12/02/1998 | EP0881353A1 Process and material for well cementing |
| 12/02/1998 | EP0880495A1 High stability and low metals esters based on 3,5,5-trimethyl-1-hexanol |
| 12/02/1998 | EP0797601B1 Stable water-in-oil emulsions of hydrolysed polymers of n-vinyl amides, their preparation and their use |
| 12/02/1998 | CN1200785A Sealings in oil and gas wells, and method for preparing same |
| 12/01/1998 | US5843872 Drilling fluid system and related methods |
| 12/01/1998 | US5842519 Process for reducing hydrocarbon leakage from a subterranean storage cavern |
| 11/26/1998 | WO1998053181A1 Oil recovery method using an emulsion |
| 11/26/1998 | WO1998053180A1 Emulsion for well and formation treatment |
| 11/26/1998 | WO1998053007A1 Composition for controlling clathrate hydrates and a method for controlling clathrate hydrate formation |
| 11/25/1998 | EP0879935A2 Method of controlling fine particulate flowback in subterranean wells |
| 11/25/1998 | EP0879933A2 Polymeric well completion and remedial compositions |
| 11/25/1998 | EP0846193A4 Corrosion inhibition by ethoxylated fatty amine salts of maleated unsaturated acids |
| 11/24/1998 | US5841010 Surface active agents as gas hydrate inhibitors |
| 11/24/1998 | US5840784 Polymeric compositions and methods for use in low temperature well applications |
| 11/24/1998 | US5840658 Process for the controlled fixing of scale inhibitor in a subterranean formation |
| 11/24/1998 | US5839520 Method of decreasing the tortuosity of a high deviated well bore |
| 11/24/1998 | US5839510 Control of particulate flowback in subterranean wells |
| 11/19/1998 | WO1998051902A1 Low toxicity corrosion inhibitor |
| 11/19/1998 | CA2289539A1 Low toxicity corrosion inhibitor |
| 11/18/1998 | EP0878607A2 Quaternary ammonium compounds useful for inhibiting metal corrosion |
| 11/18/1998 | EP0878606A2 Reducing metal corrosivity of organic acids |
| 11/18/1998 | EP0878605A2 Use of corrosion inhibited organic acid compositions |
| 11/18/1998 | EP0878604A2 Polymeric well completion and remedial compositions |
| 11/18/1998 | EP0877717A1 Cement additives and cement compositions including said additives |
| 11/17/1998 | US5837790 Precipitation polymerization process for producing an oil adsorbent polymer capable of entrapping solid particles and liquids and the product thereof |
| 11/17/1998 | US5837656 Well treatment fluid compatible self-consolidating particles |
| 11/17/1998 | US5837655 Purified paraffins as lubricants, rate of penetration enhancers, and spotting fluid additives for water-based drilling fluids |
| 11/17/1998 | US5837654 High temperature environmentally benign drilling fluid, and viscosifying additives for use therewith |
| 11/17/1998 | US5836392 Gel from crosslinking an acrylic ester copolymer |
| 11/17/1998 | US5836391 Solvents, polysulfone |
| 11/12/1998 | WO1998050484A1 High temperature environmentally benign drilling fluid, and viscosifying additives for use therewith |
| 11/12/1998 | CA2289032A1 High temperature environmentally benign drilling fluid, and viscosifying additives for use therewith |
| 11/12/1998 | CA2237239A1 Polymeric well completion and remedial compositions and methods |
| 11/12/1998 | CA2237233A1 Polymeric well completion and remedial compositions and methods |
| 11/11/1998 | EP0877147A1 Method of plugging low temperature subterranean formation |
| 11/11/1998 | EP0753034B1 Drilling mud |
| 11/11/1998 | EP0745111B1 Composition comprising solution of n,n-dialkylamides to prevent the formation of oil/water emulsions during drilling |
| 11/10/1998 | US5834406 Enhanced oil recovering by forming a flow control agent in situ, a foamed crosslinked acrylamide polymer |
| 11/10/1998 | US5833000 Control of particulate flowback in subterranean wells |
| 11/07/1998 | CA2236734A1 Polymeric compositions and method for use in low temperature well applications |
| 11/05/1998 | WO1998049118A1 Hardener for hardening silicate solutions |
| 11/05/1998 | WO1998049117A1 Adhesive composition |
| 11/05/1998 | WO1998049116A1 Suspensions with high storage stability, comprising an aqueous silicate solution and a filler material |
| 11/05/1998 | CA2286005A1 Suspensions with high storage stability, comprising an aqueous silicate solution and a filler material |