| 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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| 03/30/1994 | EP0588879A1 Drilling mud compositions. |
| 03/29/1994 | US5298070 Cement fluid loss reduction |
| 03/29/1994 | US5298069 Acid removable low density well cement compositions and methods |
| 03/29/1994 | US5297628 Simultaneous matrix acidizing using acids with different densities |
| 03/29/1994 | US5297625 Biochemically enhanced oil recovery and oil treatment |
| 03/22/1994 | US5296007 Process for removing sulfur from coal |
| 03/22/1994 | US5295543 Converting drilling fluids to cementitious compositions |
| 03/22/1994 | US5295541 Casing repair using a plastic resin |
| 03/22/1994 | US5295540 Foam mixture for steam and carbon dioxide drive oil recovery method |
| 03/17/1994 | WO1994005898A1 A method of increasing the productivity of oil and gas wells |
| 03/17/1994 | WO1994005896A1 Improved additive composition for oil well cementing formulations |
| 03/17/1994 | DE4237836C1 Verfahren zum Abdichten von Wasserzuflüssen aus geologischen Gesteinsformationen A method of sealing water inflows from geological rock formations |
| 03/16/1994 | EP0587383A1 A method of making a cement agglomeration. |
| 03/16/1994 | EP0586383A1 Breaker chemical encapsulated with a crosslinked elastomer coating |
| 03/15/1994 | US5294693 Acrylic copolymer which is water-soluble or moderately water-soluble and may be crosslinked; and its use |
| 03/15/1994 | US5294651 Fluid loss additives for well cementing compositions |
| 03/15/1994 | US5294353 Methods of preparing and using stable oil external-aqueous internal emulsions |
| 03/15/1994 | US5293942 Oil well acidizing with iron chelating derivatives of aldohexoses and aldopentoses such as a salt or acid of 2-ketogluconate |
| 03/15/1994 | US5293939 Formation treating methods |
| 03/15/1994 | US5293938 Plugging |
| 03/11/1994 | CA2105783A1 Cement agglomeration |
| 03/09/1994 | EP0585228A1 Encapsulated breaker chemical with a multi-coat layer urea |
| 03/09/1994 | CN1083563A Stabilizing compositions and methods for stabilizing subterranean formations |
| 03/08/1994 | US5292908 Adding alkyltrialkoxysilane |
| 03/08/1994 | US5292800 Epichlorohydrin, alcohol, polyol, alkoxylation |
| 03/08/1994 | US5292480 Acid-anhydride esters as oil field corrosion inhibitors |
| 03/08/1994 | US5292367 Dispersant compositions for subterranean well drilling and completion |
| 03/08/1994 | US5291950 Method of well treatment |
| 03/08/1994 | US5291949 Method for inhibiting caustic flood breakthrough |
| 03/08/1994 | CA1327668C Method and composition for viscosifying hydrocarbons |
| 03/08/1994 | CA1327445C Process for preparing sulfur solvent compositions |
| 03/08/1994 | CA1327444C Oil recovery process using alkyl aryl polyalkoxyol sulfonate surfactants as mobility control agents |
| 03/08/1994 | CA1327443C Method for removing polymer plugging in well boreholes |
| 03/05/1994 | CA2105428A1 Composition and process for increasing the shear strength of processing wastes used for tip building and underground consolidation |
| 03/02/1994 | CN1083164A Method of fracture acidizing subterranean formations |
| 02/23/1994 | EP0583814A1 Thermoviscosifying polymers, their synthesis and their uses in particular in the oil industry |
| 02/22/1994 | US5288618 Culturing anionic galactomannan from Erwinia by aerobic fermentation |
| 02/22/1994 | US5288411 Using polyacrylates and phosphonolated amines dispersants |
| 02/22/1994 | US5288410 Adding polyacrylic acid, copolymer of allyl sulfonate and maleic anhydride, copolymer of acrylic acid and acrylamide, and additives |
| 02/22/1994 | US5287929 Introducing copolymer containing sulfonate and carboxyl groups and settable cement slurry |
| 02/22/1994 | CA2016418C Kill fluid for oil field operations |
| 02/17/1994 | WO1994003706A1 A method for the inhibition of scale deposition and composition therefor |
| 02/17/1994 | WO1994000392A1 Scavenging of hydrogen sulphide |
| 02/17/1994 | CA2141601A1 A method for the inhibition of scale deposition and composition therefor |
| 02/15/1994 | US5285849 Formation treating methods |
| 02/09/1994 | EP0582507A1 Process to reduce the tendency to agglomerate of hydrates in production effluents |
| 02/09/1994 | EP0582367A1 Retarded acid soluble well cement compositions |
| 02/09/1994 | EP0581812A1 Method of cementing a well. |
| 02/08/1994 | US5284844 Biocides for protecting industrial materials and water systems |
| 02/08/1994 | US5284635 Process for the elimination of hydrogen sulfide by using water-in-oil emulsions |
| 02/08/1994 | US5284513 Cement slurry and cement compositions |
| 02/08/1994 | US5284207 Method of cleaning a well bore prior to a cementing operation |
| 02/08/1994 | US5284206 Injecting polymerizable oligomer of furfuryl alcohol with an acid catalyst prior to oil recovery; reduces permeability in high permeability zones |
| 02/03/1994 | WO1994002567A1 Earth support fluid composition and method for its use |
| 02/03/1994 | WO1994002566A1 Mineral additives for setting and/or controlling the rheological properties and gel structure of aqueous liquids, and the use of such additives |
| 02/03/1994 | WO1994002565A1 Drilling fluid |
| 02/03/1994 | WO1994002113A1 Industrial, pharmaceutical and cosmetic applications for cultured plant cell gums |
| 02/03/1994 | DE4224537A1 Mineralische Additive zur Einstellung und/oder Regelung der Rheologie und Gelstruktur wässriger Flüssigphasen und ihre Verwendung Mineral additives to adjust and / or control the rheology of aqueous gel structure and liquid phases and their use |
| 02/03/1994 | CA2141299A1 Mineral additives for setting and/or controlling the rheological properties and gel structure of aqueous liquid phases and the use of such additives |
| 02/03/1994 | CA2141193A1 Industrial, pharmaceutical and cosmetic applications for cultured plant cell gums |
| 02/02/1994 | EP0580843A1 Method of maintaining subterranean formation permeability and inhibiting clay swelling |
| 02/01/1994 | US5283235 Compositions containing esters of carboxy-containing interpolymers and methods of using the same |
| 02/01/1994 | US5282995 Aqueous alkaline solution of diethylenetriaminepentaaacetic acid chelating agent and formate anion catalyst |
| 02/01/1994 | CA2094897A1 Retarded acid soluble well cement compositions and methods |
| 02/01/1994 | CA1326731C High molecular weight terpolymers of acrylamide, acrylic acid salts and alkylacrylamide |
| 01/25/1994 | US5281270 Water slurry of magnesium oxide and magnesium chloride and borate and sugar set retarder |
| 01/20/1994 | WO1994001684A1 Process for recovering and causing highly viscous petroleum products to flow |
| 01/20/1994 | WO1994001654A1 Method of dissolving organic filter cake obtained in drilling and completion of oil and gas wells |
| 01/19/1994 | EP0579466A2 Process to enhance removal of polymer-containing filter cakes from wellbores and compositions therefor |
| 01/19/1994 | CN1080943A Compositions containing derivatives of succinic acylating agent or hydroxyaromatic compounds and methods of using the same |
| 01/18/1994 | US5279367 Flooding of underground hydrocarbon formations |
| 01/18/1994 | CA1326207C Method for selectively treating strata in subterranean formations by co-injection |
| 01/14/1994 | CA2100297A1 Method of controlling iron in produced oilfield waters |
| 01/12/1994 | EP0577931A1 Process for reducing or complete setting of water production during drilling for oil and/or hydrocarbon gas recovery |
| 01/12/1994 | EP0577730A1 Synthetic cover for waste piles |
| 01/12/1994 | EP0381734B1 Improved method of forming stable dispersions of particulate matter |
| 01/11/1994 | US5278248 Water-soluble polymers and/or copolymers possessing increased biodegradability, and their applications |
| 01/11/1994 | US5278203 Coating particulate aqueous gelling agent comprising guar gum, guar derivative, hydroxyethyl cellulose and/or carboxymethyl hydroxyethyl cellulose with suspending agent and surfactant to improve its suspendability in hydrocarbon carrier fluid |
| 01/11/1994 | US5277830 pH tolerant heteropolysaccharide gels for use in profile control |
| 01/06/1994 | WO1994000672A1 Stabilizing compositions and methods for stabilizing subterranean formations |
| 01/06/1994 | CA2138030A1 Stabilizing composition and methods for stabilizing subterranean formations |
| 01/05/1994 | EP0577526A1 Acrylic copolymer partially or fully soluble in water, cured or not and its use |
| 01/05/1994 | EP0577300A2 Low permeability subterranean formation testing method |
| 01/05/1994 | EP0577290A2 Method of fracture acidizing subterranean formations |
| 01/05/1994 | EP0577060A2 Acceleration of gelation of water soluble polymers |
| 01/04/1994 | US5276116 Blend of olefin-divinylbenzene copolymer with vinyl siloxane copolymer with a catalyst |
| 01/04/1994 | US5275744 Derivatives of polyalkylenepolyamines as corrosion inhibitors |
| 01/04/1994 | US5275654 Cement sealing |
| 01/04/1994 | US5275508 Synthetic cover for waste |
| 01/04/1994 | CA1325756C Stability and compatibility of glycosides in acid systems |
| 01/02/1994 | CA2099219A1 Methods of fracture acidizing subterranean formations |
| 12/29/1993 | EP0576401A2 Borehole assembly, method and composition therefor |
| 12/28/1993 | US5273728 Reacting the fine particles of silica with the layered compound containing lithium and di- and trivalent metals |
| 12/28/1993 | US5273682 Gelation inhibition of a mixture of water and an alkyl aromatic sulfonate by adding a sulfonate or disulfonate |
| 12/28/1993 | US5273666 Binding sand by injecting solvent containing an alkyl silicate to react with a previously injected aqueous alkali or ammonium hydroxide solution |
| 12/28/1993 | US5273580 High temperature well cement compositions and methods |
| 12/25/1993 | CA2099101A1 Low permeability subterranean formation testing methods and apparatus |
| 12/23/1993 | WO1993025798A1 A method for inhibiting gas hydrate formation |
| 12/22/1993 | EP0495856B1 Wellbore fluid |
| 12/21/1993 | US5271466 Subterranean formation treating with dual delayed crosslinking gelled fluids |