| 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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| 06/27/1989 | US4843176 Compounds containing sulfur and amino groups |
| 06/27/1989 | US4843118 Acidized fracturing fluids containing high molecular weight poly(vinylamines) for enhanced oil recovery |
| 06/27/1989 | US4843048 Organophilic clay compositions |
| 06/27/1989 | US4842776 Styrylaryloxy ether sulfonates, a process for their preparation and their use in the recovery of crude oil |
| 06/27/1989 | US4842770 Non-carcinogenic mixture of tannin and chromium acetates |
| 06/27/1989 | US4842073 Quaternary ammonium salt reduces formation permeability damage by stimulation fluid; enhanced oil recovery |
| 06/27/1989 | US4842072 Injecting polymerizable resin and acid polymerization catalyst in polar organic diluent, then injecting brine; enhanced oil recovery |
| 06/27/1989 | US4842071 Injection of aqueous dispersion of acrylamide polymers; then in situ hydrolysis with alkali metal base; enhanced oil recovery |
| 06/27/1989 | US4842068 Process for selectively treating a subterranean formation using coiled tubing without affecting or being affected by the two adjacent zones |
| 06/27/1989 | US4842067 Process for enhanced recovery of oil from a subsurface reservoir for surfactant flooding |
| 06/27/1989 | US4842065 Oil recovery process employing cyclic wettability alteration |
| 06/27/1989 | US4842056 Injecting aqueous solution of metal compound and reducing agent; corrosion resistance |
| 06/27/1989 | CA1256604A1 Process for clarifying bicarbonate bearing waters using measurement and control of carbon dioxide content |
| 06/22/1989 | DE3841030A1 Verfahren zum inhibieren der steinbildung in einem bohrloch A method for inhibiting the formation of scale deposit in a borehole |
| 06/21/1989 | EP0321130A2 Oil-based well bore fluids and gellants therefor |
| 06/21/1989 | EP0321035A2 Low-viscosity cement composition |
| 06/21/1989 | EP0320769A2 Optionally quaternised fatty esters of alkoxylated alkyl-alkylene diamines |
| 06/20/1989 | US4841040 Phosphated, oxidized starch and use of same as dispersant in aqueous solutions and coating for lithography |
| 06/14/1989 | EP0320449A1 Steam mediated fluorochemically enhanced oil recovery |
| 06/14/1989 | EP0320288A1 Cementing oil and gas wells using converted drilling fluid |
| 06/14/1989 | EP0319989A2 Phosphated, oxidized starch and use of same as dispersant in aqueous solutions and coating for lithography |
| 06/14/1989 | EP0319942A2 Salts and amine of at least partially perfluorinated amino- and/or amidocarboxylic acids and their use |
| 06/14/1989 | EP0319868A2 Use of carboxymethylsulfoethyl cellulose in drilling fluids |
| 06/14/1989 | EP0319865A2 Carboxymethyl sulfoethyl cellulose and process for its preparation |
| 06/13/1989 | US4839154 Mixing a surfactant in the solution and reacting with oxidizing agent |
| 06/13/1989 | US4839096 Low toxicity oil composition and use thereof in drilling fluids |
| 06/13/1989 | US4839095 Stable mud drilling fluid additive, composition and process for making the same |
| 06/13/1989 | US4838352 Process for plugging subterranean formations |
| 06/13/1989 | US4838351 Proppant for use in viscous oil recovery |
| 06/13/1989 | US4838350 Gravity stable surfactant flooding in gas depleted reservoirs |
| 06/13/1989 | CA1255840A1 Process for preparing water soluble copolymers inverted microlatex: microlatex thus obtained and its use for enhancing hydrocarbon production |
| 06/13/1989 | CA1255489A1 Process for the enhanced oil recovery of underground mineral oil deposits |
| 06/06/1989 | US4837323 Corrosion inhibitors |
| 06/06/1989 | US4836941 Clear brine fluids |
| 06/06/1989 | US4836940 Composition and method of controlling lost circulation from wellbores |
| 06/06/1989 | US4836302 Apparatus and method for removing and recovering oil and/or other oil-based drilling mud additives from drill cuttings |
| 06/06/1989 | US4836286 Method for removal of flow-restricting matter from hydrocarbon producing wells |
| 06/06/1989 | US4836285 Composition and methods for reducing the permeability of underground strata |
| 06/06/1989 | US4836284 Equilibrium fracture acidizing |
| 06/06/1989 | US4836283 Enhanced oil recovery |
| 06/06/1989 | US4836282 Acrylic acid-ethyl acrylate-methacrylic acid terpolymer |
| 06/06/1989 | US4836281 Process for improving the gas sweeping of an oil formation, using foams mainly containing surfactants with perfluoric groups |
| 06/06/1989 | CA1255308A1 Corrosion inhibitors |
| 06/06/1989 | CA1255307A1 Corrosion inhibitors |
| 06/06/1989 | CA1255090A1 Cationic acrylamide emulsion polymer brine thickeners |
| 05/30/1989 | US4835043 Sulfite-oxide process for scavenging hydrogen sulfide |
| 05/30/1989 | US4834182 Polymers for oil reservoir permeability control |
| 05/30/1989 | US4834180 Amino resins crosslinked polymer gels for permeability profile control |
| 05/30/1989 | US4834179 Recovering residual hydrocarbons |
| 05/30/1989 | CA1255028A1 Thickening agents and the manufacture and use thereof |
| 05/30/1989 | CA1254730A1 Aqueous compositions containing cyanuric acid |
| 05/24/1989 | EP0178962B1 Method and apparatus for the compression and transportation of a gas comprising a liquid fraction |
| 05/24/1989 | DE3838352A1 Verfahren zur reinigung eines polysaccharidmediums zur erhoehung von dessen filtrierbarkeit und verwendung des gereinigten mediums zur durch hilfsmittel unterstuetzten erdoelfoerderung Method for cleaning a polysaccharidmediums to increase its filterability and use of the purified medium for tool supported by erdoelfoerderung |
| 05/24/1989 | CN1033042A Slurry for effectively controlling loss |
| 05/23/1989 | US4832123 Removing fracture fluid via chemical blowing agents |
| 05/23/1989 | CA1254376A1 Thickeners |
| 05/18/1989 | WO1989004292A1 Process for the production of iron oxide having high reactivity and high specific surface |
| 05/17/1989 | EP0315987A2 Improved organophilic clay suspension medium |
| 05/16/1989 | US4831176 Ether phosphonate surfactants having branched hydrophobic tails and their use in an enhanced oil recovery process |
| 05/16/1989 | US4830828 Pipeline transportation of oil and/or gas |
| 05/16/1989 | US4830827 For metals |
| 05/16/1989 | US4830765 Modified non-polluting liquid phase shale swelling inhibition drilling fluid and method of using same |
| 05/16/1989 | US4830112 Method and apparatus for treating wellbores |
| 05/16/1989 | US4830108 Amino resin modified xanthan polymer foamed with a chemical blowing agent |
| 05/16/1989 | CA1254337A1 Gel and process for retarding fluid flow |
| 05/16/1989 | CA1254026A1 Polymers useful in the recovery and processing of natural resources |
| 05/16/1989 | CA1254025A1 Microbiocidal anionic sequesterants with polyvalent metal cations for permeability correction process |
| 05/10/1989 | EP0315243A1 Oil-well cement slurries with good fluid-loss control |
| 05/09/1989 | US4829100 Continuously forming and transporting consolidatable resin coated particulate materials in aqueous gels |
| 05/09/1989 | US4828726 Stabilizing clayey formations |
| 05/09/1989 | US4828725 Completion fluids containing high molecular weight poly(vinylamines) |
| 05/09/1989 | US4828724 Drilling fluid to minimize solids disintegration |
| 05/09/1989 | US4828034 Method of hydrating oil based fracturing concentrate and continuous fracturing process using same |
| 05/09/1989 | US4828032 Oil recovery process using alkyl hydroxyaromatic dianionic surfactants as mobility control agents |
| 05/09/1989 | US4828031 In situ chemical stimulation of diatomite formations |
| 05/09/1989 | US4828030 Viscous oil recovery by removing fines |
| 05/09/1989 | US4828029 Enhanced oil recovery, cosolvents, carobn dioxide, nitrogen, light hydrocarbons |
| 05/03/1989 | EP0314242A1 Additives for oilfield cements and corresponding cement slurries |
| 05/03/1989 | EP0314118A2 Cementing composition comprising water-soluble, nonionic hydrophobically modified hydroxyethyl cellulose and its use |
| 05/03/1989 | EP0130891B1 Biopolymer compositions and process for their preparation |
| 05/02/1989 | US4826625 Demulsification |
| 05/02/1989 | US4826611 Stable rheology |
| 05/02/1989 | US4825952 Enhanced oil recovery |
| 05/02/1989 | US4825951 Process for recovery of oil from a subsurface reservoir by surfactant flooding |
| 05/02/1989 | US4825950 Method of enhanced oil recovery using a stabilized polymer combination in chemical flood |
| 05/02/1989 | US4825949 Enhanced oil recovery |
| 05/02/1989 | CA1253332A1 Aqueous drilling and packer fluids |
| 04/26/1989 | EP0313243A2 Method for providing coated particulate materials suspended in aqueous gels |
| 04/26/1989 | EP0168479B1 Particulate ceramic useful as a proppant |
| 04/25/1989 | US4824916 Water-insoluble, crosslinked, sulfonated aromatic polyamide |
| 04/25/1989 | US4823874 Reducing sludging during oil well acidizing |
| 04/25/1989 | US4823873 Steam mediated fluorochemically enhanced oil recovery |
| 04/25/1989 | US4823826 Process and apparatus for introducing aqueous chloride dioxide into high pressure water injection wells |
| 04/19/1989 | EP0311799A1 Water dispersible hydrophobic thickening agent |
| 04/18/1989 | US4822842 Delaying the gelation of water soluble polymers |
| 04/18/1989 | US4822501 Use of lignin/amine/surfactant blends in enhanced oil recovery |
| 04/18/1989 | US4822500 With xanthan gum and epichlorohydrin-crosslinked hydroxypropyl starch, also suspended salt particles; enhanced oil recovery |
| 04/18/1989 | US4822422 Geothermal wells |
| 04/18/1989 | US4821803 Ethoxylated phenols and ethoxysulfated phenols; enhanced oil recovery |
| 04/18/1989 | US4821802 Aqueous sulfomethylated melamine gel-forming compositions and methods of use |