| 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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| 09/20/1989 | EP0333473A2 Micro-tunnelling method |
| 09/20/1989 | EP0333458A2 Shale-stabilizing drilling fluid additives |
| 09/20/1989 | EP0246234B1 Method for the consolidation of geological formations |
| 09/19/1989 | US4868293 Free of glucuronic acid groups |
| 09/19/1989 | US4867888 Corrosion inhibiting system containing alkoxylated alkylphenol amines |
| 09/19/1989 | US4867256 Injection of polymer chemicals into drilling mud |
| 09/19/1989 | US4867239 Oil recovery process using a treated polymer solution |
| 09/19/1989 | US4867238 Recovery of viscous oil from geological reservoirs using hydrogen peroxide |
| 09/19/1989 | CA1259721A1 Inverse emulsions |
| 09/19/1989 | CA1259481A1 Process and composition for inhibiting iron and steel corrosion |
| 09/19/1989 | CA1259479A1 Method and composition for acidizing subterranean formations |
| 09/19/1989 | CA1259478A1 Method and composition for protecting metal surfaces from oxidative environments |
| 09/19/1989 | CA1259477A1 Steam foam process |
| 09/19/1989 | CA1259476A1 Alkali-enhanced steam foam oil recovery process |
| 09/19/1989 | CA1259475A1 Steam-foaming surfactant mixtures which are tolerant of divalent ions |
| 09/13/1989 | EP0332098A2 Aqueous surfactant mixtures and their use in oil recovery |
| 09/12/1989 | US4865129 High temperature profile modification agents and methods for using same |
| 09/12/1989 | CA1259183A1 Composition and method for corrosion inhibition |
| 09/12/1989 | CA1259182A1 Drilling fluids |
| 09/08/1989 | WO1989008148A2 Process for preparing aqueous suspensions or slurries from cellulose microfibrils, cellulose microfibril aqueous suspension or slurry and its use |
| 09/06/1989 | EP0331472A2 Dialkylaminoalkyl-hydroxyalkyl ethers of polygalactomannans |
| 09/06/1989 | EP0331277A2 Saturated brine well treating fluids and additives therefor |
| 09/06/1989 | EP0331158A2 Drilling fluid thinner |
| 09/06/1989 | EP0331046A1 Drilling mud compositions containing high molecular weight poly(vinylamines) |
| 09/06/1989 | EP0331045A1 Cement composition for oil well drilling holes containing high molecular weight poly(vinylamines) |
| 09/06/1989 | EP0331044A1 Completion fluids containing high molecular weight poly(vinylamines) |
| 09/05/1989 | US4864075 Dithiocarbamates for treating hydrocarbon recovery operations and industrial waters |
| 09/05/1989 | US4863980 Adduct of polysaccharides and phosphatides |
| 09/05/1989 | US4863618 Oil recovery with water containing carbonate salt, CO2, and surfactant |
| 09/05/1989 | US4862975 Drilling fluid additive |
| 09/05/1989 | US4862963 Adding alkali metal or ammonium sulfate |
| 09/05/1989 | CA1258964A1 Composition and method for corrosion inhibition |
| 08/30/1989 | EP0330489A2 Method for reducing the viscosity of aqueous fluids |
| 08/29/1989 | US4861500 Delayed crosslinker composition containing organic titanium complexes and hydroxycarboxylic acids |
| 08/29/1989 | US4861499 Water-dispersible hydrophobic thickening agent |
| 08/29/1989 | US4861380 Composition |
| 08/29/1989 | US4860829 Inhibition of reservoir scale |
| 08/29/1989 | US4860828 Gas flooding processing for the recovery of oil from subterranean formations |
| 08/29/1989 | CA1258947A1 Water-soluble copolymers and their use as dispersing agents for solids |
| 08/24/1989 | WO1989007698A1 Delayed in situ crosslinking of acrylamide polymers for oil recovery applications in high-temperature formations |
| 08/23/1989 | EP0329409A2 Backfilling process |
| 08/22/1989 | US4859717 Cross-linked polyvinyl alcohols and oil reservoir permeability control therewith |
| 08/22/1989 | US4858693 Compositions and methods for reducing the permeability of underground strata |
| 08/22/1989 | CA1258734A1 Gel and process for preventing loss of circulation and combination process for enhanced recovery |
| 08/16/1989 | EP0328279A1 Preparation of halogenated organic compounds |
| 08/15/1989 | US4856593 Inhibition of hydrate formation |
| 08/15/1989 | US4856589 Gas flooding with dilute surfactant solutions |
| 08/15/1989 | US4856588 Selective permeability reduction of oil-free zones of subterranean formations |
| 08/15/1989 | US4856586 Xanthan biopolymer and polyacrylamide crosslinked with bisacrylamide |
| 08/09/1989 | EP0326720A1 Method of removing polymer gels from a petroleum reservoir |
| 08/08/1989 | US4854385 Injecting surfactant, flow control agent, and drive fluid |
| 08/02/1989 | EP0326125A1 Flowability improving agent, process for the production thereof and use thereof |
| 08/02/1989 | EP0269630B1 Process for strengthening geological formations |
| 08/01/1989 | USRE33008 Acrylic emulsion copolymers for thickening aqueous systems and copolymerizable surfactant monomers for use therein |
| 08/01/1989 | US4853474 Cross-linked organopolysiloxanes and emulsions based thereon |
| 08/01/1989 | US4853465 Organophilic polyphenolic acid adducts |
| 08/01/1989 | US4853447 Polymerization of cationic N,N-dimethylalkylamine type monomers |
| 08/01/1989 | US4853138 C-branched zwitterionic surfactants and enhanced oil recovery method using same |
| 08/01/1989 | US4852653 Using a sulfonate surfactant |
| 08/01/1989 | US4852652 Using an acrylamide polymer |
| 08/01/1989 | US4852651 Polydialkylsilalkylene polymer useful in enhanced oil recovery using carbon dioxide flooding |
| 08/01/1989 | CA1258147A1 Rigid popyurethane foams with constant or slightly decreasing strain with an increasing stress in compression |
| 07/27/1989 | WO1989006676A1 The use of polyalphaolefin in downhole drilling |
| 07/26/1989 | EP0325466A2 The use of polyalphaolefin in downhole drilling |
| 07/26/1989 | EP0324887A2 Compositions for freeing stuck drill pipes |
| 07/26/1989 | CN1034190A Cementing composition and aqueous hydraulic cementing solution comprising water-soluble nonionic hydrophobically modified hydroxyethyl cellulose |
| 07/25/1989 | US4851143 Amino resin modified xanthan polymer gels for permeability profile control |
| 07/25/1989 | US4851142 Reaction product of a metal alcoholate, humic acid derivative and a modified polyoxyalkylene glycol; heat resistance |
| 07/25/1989 | CA1257861A1 Organic titanium compositions useful as cross-linkers |
| 07/19/1989 | EP0324568A2 Water soluble polymers for detergent compositions |
| 07/19/1989 | EP0324003A1 Method and apparatus for cleaning wells |
| 07/19/1989 | CN1034018A Oil-based well bore fluids and gellants |
| 07/18/1989 | US4849484 Sustained release, crossslinked polymer matrix, water soluble anionic polymer |
| 07/18/1989 | US4848487 Method for minimizing mud solids invasion of core samples obtained during subsurface coring |
| 07/18/1989 | US4848470 Separation using a solvent |
| 07/18/1989 | US4848467 Degradation of hydroxyacetic acid condensation product |
| 07/18/1989 | US4848465 Use of alkali metal silicate foam with a chemical blowing agent |
| 07/18/1989 | US4848464 Injection solidifiable gel mixture |
| 07/13/1989 | DE3842747A1 Verfahren zur bestimmung der konzentration von polyacrylsaeure in einer loesung mit mehrwertigen kationen Method for the determination of the concentration of polyacrylic acid in a spoon with polyvalent cations |
| 07/12/1989 | EP0323775A1 Process to delay the formation and/or to reduce the tendency to agglomerate of hydrates |
| 07/12/1989 | EP0323774A1 Process to delay the formation and/or to reduce the tendency to agglomerate of hydrates |
| 07/12/1989 | EP0323627A2 Modified galactomannans and process for their preparation |
| 07/12/1989 | EP0187074B1 Thermal stabilisation process for aqueous polysaccharide solutions |
| 07/11/1989 | US4846981 Method of restoring permeability around wellbores |
| 07/11/1989 | US4846980 Corrosion inhibiting system containing alkoxylated dialkylphenol amines |
| 07/11/1989 | US4846888 Lignosulfonate formed from coupling diazonium, salt of sulfanilic acid or amino benzoic acid |
| 07/11/1989 | US4846277 In situ nitrogen foaming |
| 07/11/1989 | US4846275 Recovery of heavy crude oil or tar sand oil or bitumen from underground formations |
| 07/11/1989 | US4846274 Process for recovering hydrocarbon |
| 07/11/1989 | CA1257424A1 Chemically modified lignite |
| 07/04/1989 | US4845134 Acrylic amide polymer, phenolic resin crosslinker, plugging permeable zones |
| 07/04/1989 | US4844756 Salt derived from hydrocarbyl-substituted carboxylic acid or anhydride or derivative, and ammonia, an amine, or alkali or alkaline earth metal |
| 07/04/1989 | US4844169 Nitrogen stimulation of a potassium hydroxide wellbore treatment |
| 07/04/1989 | US4844168 Enhanced oil recovery |
| 07/04/1989 | US4844164 Injecting a water solution of lime and compound that increases solubility of lime |
| 07/04/1989 | US4844163 Closing pores; enhanced oil recovery |
| 07/04/1989 | US4844155 Process for increasing the yield of oil reservoirs |
| 07/04/1989 | CA1256688A1 Corrosion inhibitor for brines |
| 07/04/1989 | CA1256686A1 Process for consolidating and sealing coal and/or rock, soil and brick formations in mining, tunnelling and construction |
| 06/29/1989 | WO1989005848A1 Water-in-oil emulsions |