| 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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| 01/01/1985 | US4491524 Lubricating additive for drilling muds |
| 01/01/1985 | US4491181 Method of freeing stuck drill string using spotting fluid |
| 12/27/1984 | CA1179915A Method of breaking an emulsion and an emulsion- emulsion breaker composition |
| 12/25/1984 | US4490536 Salt free phosphobetaines |
| 12/25/1984 | US4490263 N,N-Disubstituted amide cosurfactants in enhanced oil recovery processes |
| 12/25/1984 | US4490262 High density fluid containing calcium and zinc bromide |
| 12/25/1984 | US4490261 Acidic high temperature stable aqueous brine fluids viscosified by basic N-heterocyclic polymers |
| 12/25/1984 | US4489785 Epoxy resin cured with an imidazole |
| 12/20/1984 | WO1984004927A1 Drilling mud containing clays and lignin from bark |
| 12/19/1984 | EP0128661A1 Polymer suspensions |
| 12/18/1984 | US4489180 Drag reduction agent utilizing water soluble interpolymer complexes |
| 12/18/1984 | US4488976 Olefin sulfonate-improved steam foam drive |
| 12/18/1984 | US4488975 High temperature stable crosslinked gel fracturing fluid |
| 12/18/1984 | US4488602 Process for emulsion flooding of petroleum reservoirs |
| 12/18/1984 | US4488601 Control of aluminum cross-linked polyacrylamides for sweep improvement |
| 12/18/1984 | US4488578 Prevention of hydrogen embrittlement of metals in corrosive environments |
| 12/18/1984 | CA1179621A1 Compound and process for the production and enrichment of petroleum products |
| 12/18/1984 | CA1179571A1 Modified organophilic clay complexes |
| 12/11/1984 | US4487867 Mixing with a cationic or amphoteric polymer and potassium chlorid; hydration |
| 12/11/1984 | US4487866 Method of improving the dispersibility of water soluble anionic polymers |
| 12/11/1984 | US4487837 Radiation method for determining brine tolerant surfactants in complex mixtures |
| 12/11/1984 | US4487835 Plasmid having temperature dependent plasmid copy number |
| 12/11/1984 | US4487703 Surfactant and process for enhanced oil recovery |
| 12/11/1984 | US4487702 Substituted heterocyclic methane sulfonates as sacrificial agents in enhanced oil recovery |
| 12/11/1984 | US4487634 Suspensions containing microfibrillated cellulose |
| 12/11/1984 | US4487265 Acidizing a subterranean reservoir |
| 12/11/1984 | US4487262 Silica, sodium hydroxide, sodium bicarbonate, sodium silicate, carbon dioxide, viscosity |
| 12/11/1984 | CA1179115A1 Method for recovering oil from subterranean deposits by emulsion flooding |
| 12/11/1984 | CA1179114A1 Method for recovering oil from a subterranean deposit |
| 12/04/1984 | US4486340 Treatment of water thickened systems |
| 12/04/1984 | US4486335 Carboxymethyl hydroxyethyl cellulose composition |
| 12/04/1984 | US4486318 High temperature stable viscosifier and fluid loss control system |
| 12/04/1984 | US4486316 Acrylic acid-acrylic ester copolymer |
| 12/04/1984 | US4485875 Process for selectively plugging permeable zones in a subterranean formation |
| 12/04/1984 | US4485874 Injection of chelating agent |
| 12/04/1984 | US4485873 Emulsion-free crude oil |
| 12/04/1984 | US4485872 Sulfone cosurfactants in enhanced oil recovery processes |
| 12/04/1984 | US4485871 Injection of alcohol, displacement with aqueous alkaline solution |
| 11/28/1984 | EP0126363A1 Use of copolymer from esters and amides of acrylic and/or methacrylic acids as pour point depressants in paraffin solutions |
| 11/28/1984 | EP0126141A1 Viscosity increasing additive for non-aqueous fluid systems |
| 11/27/1984 | USRE31748 Hydroxy-containing aluminum component, polyvinyl acetal, drilling, |
| 11/27/1984 | US4485224 Acrylamide polymerization |
| 11/27/1984 | US4485021 12-amino-2-methylpropanol, soap formation |
| 11/27/1984 | US4485020 Flow control agents for enhanced oil recovery |
| 11/27/1984 | US4484631 Use of polyampholytes to enhance oil and/or gas recovery |
| 11/27/1984 | CA1178578A1 Cyclic amidine based corrosion inhibitors which inhibit corrosion caused by co.sub.2 and h.sub.2s |
| 11/21/1984 | EP0125957A1 Process to control the swelling of clays upon contact with sea water |
| 11/21/1984 | EP0125680A2 Process for making an under ground layer of sand or gravel sand water-tight |
| 11/20/1984 | US4483848 Dentrifice composition comprising microbial heteropolysaccharide |
| 11/20/1984 | US4483782 Biopolymers |
| 11/20/1984 | CA1178194A1 Stimulation and cleanup of oil-and/or gas-producing wells |
| 11/20/1984 | CA1178040A1 Enhanced oil displacement processes and compositions |
| 11/14/1984 | EP0125191A2 Improved acidic compositions for use in acidizing hydrocarbon bearing subterranean formations and method for using same |
| 11/13/1984 | US4482704 Method and apparatus for multiple recycle polymer dilution |
| 11/13/1984 | US4482634 Chemical flood testing method |
| 11/13/1984 | US4482383 Polyamine fluid loss additive for oil well cements |
| 11/13/1984 | US4482381 Solid polyamine-based fluid loss control additives |
| 11/13/1984 | US4482379 Cold set cement composition and method |
| 11/13/1984 | US4482016 Acidizing with chemically heated weak acid |
| 11/13/1984 | US4482015 In situ formation of melamine-formaldehyde resin, enhanced oil recovery |
| 11/13/1984 | CA1177635A1 Process for the preparation of completion fluids and pastes used for developing said process |
| 11/13/1984 | CA1177634A1 Invert emulsions for well-drilling comprising a polydiorganosiloxane and method therefor |
| 11/07/1984 | EP0124303A2 Cement composition for sealing a subterranean formation |
| 11/07/1984 | EP0124227A2 Gasified cements for cementing wells |
| 11/07/1984 | EP0124194A2 Low toxicity oil-based drilling fluid |
| 11/07/1984 | EP0123690A1 Methods of using strong acids modified with acid solutions |
| 11/06/1984 | US4481121 Viscosifier for oil base drilling fluids |
| 11/06/1984 | US4481120 Drilling and completion of oil wells |
| 11/06/1984 | US4480696 Stabilized with surfactant |
| 11/06/1984 | US4480694 In situ hydrolysis of hydrohalic acid precursor |
| 11/06/1984 | US4480693 Aqueous slurry of copolymer of vinylpyrrolidone and styrenesulfonate |
| 11/06/1984 | US4480692 Phosphorus containing ester cosurfactants in enhanced oil recovery processes |
| 11/06/1984 | US4480691 Recycled fatty acid crude petroleum recovery process |
| 11/06/1984 | CA1177432A1 Removal of asphaltene depositions with amine- activated disulfide oil |
| 10/31/1984 | EP0123420A1 Intramolecular polymeric complexes - viscosifiers for acid, base and salt (aqueous) solutions |
| 10/30/1984 | US4479894 Oil recovery by surfactant-alcohol waterflooding |
| 10/30/1984 | US4479543 Method for deeper penetrating acidizing of siliceous formations |
| 10/30/1984 | US4479542 Enhanced oil recovery process utilizing a lignosulfonate as a _solubilizing agent in an afterflush |
| 10/23/1984 | US4478727 Drilling muds for oil and gas wells |
| 10/23/1984 | US4478640 Well treating process and composition |
| 10/23/1984 | US4478283 Process for improving waterflood performance in heterogeneous clay-sensitive formations |
| 10/23/1984 | US4478281 Process for extracting oil from a subterranean reservoir |
| 10/23/1984 | US4478269 Furan Resin coated aggregate |
| 10/23/1984 | CA1176630A1 Drilling fluid additives |
| 10/23/1984 | CA1176443A1 Petroleum sulfonate adjuvants in epoxy resin corrosion-inhibiting composition |
| 10/23/1984 | CA1176442A1 Method of increasing the rate of hydration of activated hydroethyl cellulose compositions |
| 10/23/1984 | CA1176441A1 Well cementing process and gasified cements useful therein |
| 10/17/1984 | EP0122073A1 Intramolecular polymer complexes - viscosifiers for high ionic strength drilling fluids |
| 10/17/1984 | EP0121964A1 Process for preparing an alkyl aryl sulphonate concentrate composition |
| 10/16/1984 | US4477360 Method and compositions for fracturing subterranean formations |
| 10/16/1984 | US4476931 Injecting an amphoteric polymer, solvent, surfactant and carrier; permeability |
| 10/16/1984 | US4476930 A nitrogen-containing salt to prevent deposition |
| 10/16/1984 | US4476929 Sulfoxide cosurfactants in enhanced oil recovery processes |
| 10/09/1984 | US4476033 Method and compositions for acidizing and fracturing wells |
| 10/09/1984 | US4476032 Zinc bromide, calcium chloride or bromide |
| 10/09/1984 | US4476029 Polyacrylic acid bentonite, weighting agent |
| 10/09/1984 | US4475597 Enhanced oil recovewry |
| 10/09/1984 | US4475595 With ammonium compound |
| 10/09/1984 | US4475594 Adding water in oil emulsion of amine and polyamine surfactant and clay |
| 10/09/1984 | US4475593 Acidified hydrocarbon resin emulsion, demulsification |