| 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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| 09/18/1990 | US4957646 Steam foam surfactants enriched in alpha olefin disulfonates for enhanced oil recovery |
| 09/18/1990 | US4957639 Reaction product or silicon metal, metal oxide or hydroxide and polyamine |
| 09/18/1990 | US4957555 Cementing compositions and method |
| 09/18/1990 | US4957174 Method of controlling lost circulation in well drilling |
| 09/18/1990 | US4957166 Lost circulation treatment for oil field drilling operations |
| 09/18/1990 | US4957165 Well treatment process |
| 09/18/1990 | US4957163 Method of stabilizing polymer solutions in a subterranean formation |
| 09/16/1990 | CA2008826A1 Pulsed in situ exothermic shock wave and retorting process for hydrocarbon recovery |
| 09/12/1990 | WO1990010780A1 Aqueous resin preparations for consolidating rock and filling cavities and process therefor |
| 09/12/1990 | EP0387002A2 Well treatment fluid comprising crosslinkable cellulose derivative |
| 09/12/1990 | EP0386638A1 Use of selected lower carboxylic-acid ester oils in drilling fluids |
| 09/12/1990 | EP0386636A1 Esters of medium chain size carboxylie acids as components of the oil phase of invert emulsion drilling fluids |
| 09/12/1990 | EP0385991A1 Process for the production of iron oxide having high reactivity and high specific surface. |
| 09/11/1990 | US4956160 Corrosion resistance |
| 09/11/1990 | US4956104 Organophilic polymers |
| 09/11/1990 | US4956099 Methods for treating hydrocarbon recovery operations and industrial waters |
| 09/07/1990 | WO1990010138A1 Well forming process |
| 09/05/1990 | EP0364543A4 Viscosity-modifiers for aqueous-based functional products |
| 09/05/1990 | CN1045148A Altering subterranean formation permeability |
| 09/04/1990 | US4953635 Method for improving the steam splits in a multiple steam injection process |
| 09/04/1990 | US4953621 Organic titanium compositions useful as cross-linkers |
| 09/04/1990 | US4953620 Washing with formate compound; well completion |
| 09/03/1990 | CA2010167A1 Consolidated proppant pack for producing formations |
| 08/29/1990 | EP0282575B1 Method for inhibiting sulfide stress corrosion cracking and hydrogen induced stepwise cracking |
| 08/29/1990 | EP0266234B1 Acrylate acryl amide copolymers with a low molecular weight, and process for reducing the deposition of salt in aqueous systems |
| 08/29/1990 | EP0194254B1 High-density brine fluid and use in servicing wellbores |
| 08/28/1990 | US4952738 Composition and method for friction loss reduction |
| 08/28/1990 | US4951921 Water soluble polymers for subterranean wellbores |
| 08/28/1990 | US4951751 Diverting technique to stage fracturing treatments in horizontal wellbores |
| 08/28/1990 | CA1273362A1 Quaternary oxalkylated polycondensates, a process for their preparation and their use |
| 08/25/1990 | WO1990010043A1 Water-wettable drilling mud additives containing uintaite |
| 08/25/1990 | CA2046879A1 Water-wettable drilling mud additives containing uintaite |
| 08/23/1990 | WO1990009417A1 Oleophilic basic amine compounds as additives in invert mineral oil muds |
| 08/23/1990 | WO1990009416A1 Monocarboxylic methyl esters in invert mineral oil muds |
| 08/23/1990 | WO1990009357A1 Thinned cement slurry for use in the cementation of wells for producing hydrocarbons |
| 08/22/1990 | EP0383499A2 Suppression of the evolution of hydrogen sulfide gases from petroleum residua |
| 08/22/1990 | EP0383337A2 Methods for altering subterranean formation permeability |
| 08/22/1990 | EP0383163A1 Process for the stimulation of oil and gas probes in the recovery of oil and gas from substerranean formations, and stimulation agents therefor |
| 08/22/1990 | CN1044844A Stabilized sulfur dissolving compositions |
| 08/21/1990 | US4950995 Method of treating a well bore in connection with electric logging of subsurface formation |
| 08/21/1990 | US4950748 Polysaccharides |
| 08/21/1990 | US4950747 Adding low molecular weight electrolyte before drying to improve viscosity |
| 08/21/1990 | US4950698 Composition for selective placement of polymer gels for profile control in thermal oil recovery |
| 08/21/1990 | US4950411 Corrosion inhibitor compositions |
| 08/21/1990 | US4949790 Compositions and method for controlling precipitation when acidizing sour wells |
| 08/21/1990 | CA1272875A1 Sacrificial agents for enhanced oil recovery |
| 08/16/1990 | EP0382318A1 Surfactant composition |
| 08/16/1990 | EP0382071A1 Monocarboxylic-acid methyl ester for invert emulsion drilling fluids |
| 08/16/1990 | EP0382070A1 Oleophilic basic amine derivatives as additives for invert emulsion drilling fluids |
| 08/16/1990 | EP0381853A2 Stabilized sulfur dissolving compositions |
| 08/16/1990 | EP0381734A1 Improved method of forming stable dispersions of particulate matter. |
| 08/16/1990 | CA2009117A1 Altering subterranean formation permeability |
| 08/14/1990 | US4948733 Zoogloea transformation using exopoly saccharide non-capsule producing strains |
| 08/14/1990 | US4948494 From a water-in-oil emulsion by treating with sulfur dioxide for conversion to elemental sulfur |
| 08/14/1990 | US4948428 Water swellable clay, aqeous mixture of hectorite, tetraborate, carbonate and chloride of alkali metals |
| 08/14/1990 | US4948394 Introduction of a polar solvent and compression of gas-liquid mixture, separation and transportation |
| 08/14/1990 | US4947935 Kill fluid for oil field operations |
| 08/14/1990 | US4947934 Method of increasing retention of scale inhibitor in subterranean formations |
| 08/14/1990 | US4947933 In situ gelation of phenolic resin |
| 08/14/1990 | US4947932 Phosphate compound that is used in a microbial profile modification process |
| 08/14/1990 | CA1272588A1 Reduction of viscosity of aqueous fluids |
| 08/11/1990 | CA2009732A1 Process for stimulating oil and gas wells in oil and gas production from subterranean formations, and stimulant for this purpose |
| 08/09/1990 | CA2008561A1 Stabilized sulfur dissolving compositions |
| 08/08/1990 | CA2009360A1 Surfactant composition |
| 08/07/1990 | US4946606 Producing oil-in-water microemulsions from a microemulsion concentrate |
| 08/07/1990 | US4946605 Thinners of water soluble copolymers of an unsaturated sulfonate and an unsaturated carboxylate in the free acid or salt form |
| 08/07/1990 | US4946604 Injecting with a non-reducing sugar, polysaccharide and a crosslinking agent; viscosity reduction |
| 08/07/1990 | US4946578 Process for treating hydrocarbons |
| 08/07/1990 | US4945992 Injecting an aqueous solution of chlorine dioxide under pressure into a well |
| 08/07/1990 | US4945990 Polymer containing pendant vinyl ether groups useful in enhanced oil recovery using CO2 flooding |
| 08/07/1990 | US4945989 Polymer containing pendant tertiary alkyl amine groups useful in enhanced oil recovery using CO2 flooding |
| 08/07/1990 | US4945984 Igniter for detonating an explosive gas mixture within a well |
| 08/07/1990 | CA1272458A1 Reducing paraffin deposits on paraffin contaminated surfaces |
| 08/01/1990 | EP0380151A1 Delayed rigid foam systems and applications in particular for plugging - selective treatments in the oil industry |
| 08/01/1990 | EP0380150A1 Delayed rigid foam systems and applications in particular for selective plugging treatments in the oil industry |
| 08/01/1990 | EP0285608B1 Water-in-oil emulsions |
| 08/01/1990 | CN1009002B Process for preparation of modified polysaccharide and composition contg. the polysaccharide |
| 07/31/1990 | US4944905 Particulate ceramic useful as a proppant |
| 07/31/1990 | US4944634 Lubricating tunnel walls around pipe to be installed with aqueous slurry of smectite clay and magnesium oxide |
| 07/31/1990 | US4944346 Ether sulfoxide compounds for enhanced oil recovery |
| 07/31/1990 | CA2005548A1 A polyurethane quasi prepolymer for proppant consolidation |
| 07/27/1990 | CA2008673A1 Delayed rigid foam systems and applications in particular for plugging-selective treatments in the oil industry |
| 07/27/1990 | CA2008672A1 Delayed rigid foam systems and applications in particular for selective plugging treatments in the oil industry |
| 07/25/1990 | EP0379236A1 Method for treating subterranean formations |
| 07/25/1990 | EP0379101A1 Aqueous surfactant compositions based on condensates of a protein and a fatty acid, and their use in oil recuperation |
| 07/18/1990 | EP0377806A2 Method for setting well casing using a resin coated particulate |
| 07/18/1990 | EP0211065B1 Corrosion inhibitor for high density brines |
| 07/17/1990 | US4942186 Sand coated with resins as proppants |
| 07/17/1990 | US4941983 Fluid loss-reducing additives for oil-based well working fluids |
| 07/17/1990 | US4941982 Calcium-free clear high density fluids |
| 07/17/1990 | US4941981 Water soluble polymers polyhydric alcohols, blends, thickeners filtration control agents |
| 07/17/1990 | US4941537 Method for reducing the viscosity of aqueous fluid |
| 07/17/1990 | US4941536 Set retarded cement compositions and methods for well cementing |
| 07/17/1990 | US4941533 Subterranean permeability modification by using microbial polysaccharide polymers |
| 07/17/1990 | CA2007817A1 Aqueous surfactant formulations based on protein/fatty acid condensates and their use in crude oil production |
| 07/17/1990 | CA1271702A1 Chemical flooding and controlled pressure pulse fracturing process for enhanced hydrocarbon recovery from subterranean formations |
| 07/12/1990 | WO1990007467A1 Composition and method for sweetening hydrocarbons |
| 07/12/1990 | WO1990007337A1 Thickening agents for aqueous systems |
| 07/11/1990 | CN1008756B Restoring of permeability of faulted rock formation |
| 07/10/1990 | US4940091 Crosslinking polyvinyl alcohol with phenolic resin formed in situ |