| 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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| 04/21/1987 | US4659750 Fluid loss control in oil field cements |
| 04/21/1987 | US4659486 Use of certain materials as thinners in oil-based drilling fluids |
| 04/21/1987 | US4658899 Clays, bauxite, dust fines, alumina |
| 04/21/1987 | US4658898 Heteropolysaccharide from alcaligenes culture, crosslinking; heat stable |
| 04/14/1987 | US4658036 Invert emulsifiers for oil-base drilling muds |
| 04/14/1987 | US4657948 Polyallylamine or salts, naphthalene sulfonates, lignosulfonates, sulfonated aromatic vinyl polymers, crosslinking |
| 04/14/1987 | US4657944 CO2 -induced in-situ gelation of polymeric viscosifiers for permeability contrast correction |
| 04/14/1987 | US4657943 Thickeners |
| 04/14/1987 | US4657593 Modifying surface tension of finely-divided materials in a liquid |
| 04/14/1987 | US4657081 Hydraulic fracturing method using delayed crosslinker composition |
| 04/14/1987 | US4657080 Method of fracturing a subterranean formation using delayed crosslinker compositions containing organic titanium complexes |
| 04/14/1987 | CA1220415A1 High sweep efficiency steam drive oil recovery method |
| 04/09/1987 | WO1987002093A1 Process for plugging a subterranean formation |
| 04/08/1987 | EP0217608A2 Cementing boreholes using salt-containing cement compositions |
| 04/08/1987 | EP0217485A2 Acrylic-methylene succinic ester emulsion copolymers for thickening aqueous systems |
| 04/07/1987 | US4655943 Thickeners having two ionic components and use thereof in aqueous compositions |
| 04/07/1987 | US4655942 Heat resistant |
| 04/07/1987 | US4655287 Composition and method for corrosion inhibition |
| 04/01/1987 | EP0216661A1 Process for preventing the flow of water in oil and/or gas wells |
| 04/01/1987 | EP0216591A2 Temporary permeability reduction of subterranean formations |
| 04/01/1987 | EP0216091A2 Inverse emulsions |
| 03/31/1987 | US4654266 Durable, high-strength proppant and method for forming same |
| 03/31/1987 | US4653585 Oil reservoir permeability control |
| 03/31/1987 | US4653584 Maleimide-modified bioresistant polymers and enhanced oil recovery method employing same |
| 03/30/1987 | EP0163698A4 Method for controlled introduction of reagent into a liquid. |
| 03/26/1987 | WO1987001758A1 Hydraulic fracturing process and compositions |
| 03/26/1987 | WO1987001757A1 Process for strengthening geological formations |
| 03/26/1987 | EP0162910A4 Polymer article of manufacture. |
| 03/25/1987 | EP0215692A1 Process for preparing a modified polysaccharide |
| 03/25/1987 | EP0215565A1 Dispersing agents |
| 03/25/1987 | CN85106790A Aqueous drilling and packer fluids |
| 03/24/1987 | US4652623 Polymers for use as filtration control aids in drilling muds |
| 03/24/1987 | US4652621 Novel water-soluble copolymer |
| 03/24/1987 | US4652606 Water-based drilling fluids having enhanced fluid loss control |
| 03/24/1987 | US4652384 Crosslinked starch |
| 03/17/1987 | US4650596 Pour point depressants for paraffin solutions |
| 03/17/1987 | US4650594 Composition and method for corrosion inhibition |
| 03/17/1987 | US4650593 Water-based drilling fluids having enhanced fluid loss control |
| 03/17/1987 | US4650520 Slurry for cementing, especially cementing of lining pipes in drill holes, and method for production of such a slurry |
| 03/17/1987 | US4650000 Acidizing method using microemulsion |
| 03/17/1987 | US4649999 Method for treating subterranean formations with temporarily thickening solutions |
| 03/17/1987 | US4649998 Sand consolidation method employing latex |
| 03/12/1987 | WO1987001377A1 A method of producing polymers and copolymers of amido-sulfonic acid containing monomers and salts thereof |
| 03/11/1987 | EP0213594A2 Polymerflood process |
| 03/11/1987 | EP0213321A2 Method for injection enhancement at injection well drilling for the recovery of oil by water flooding |
| 03/11/1987 | EP0213245A1 High temperature stable aqueous brine fluids viscosified by water-soluble copolymers of acrylamidomethylpropanesulfonic acid salts |
| 03/10/1987 | US4649183 Calcium-tolerant N-substituted acrylamides as thickeners for aqueous systems |
| 03/10/1987 | US4648456 Method for acidizing siliceous formations |
| 03/10/1987 | US4648453 Casings in oil wells |
| 03/10/1987 | US4648452 Injection of oil wells |
| 03/10/1987 | US4648451 Enhanced oil recovery process by injecting a micellar solution of surfactants having a solubility gradient in water |
| 03/05/1987 | EP0186663A4 Gel and process for retarding fluid flow. |
| 03/05/1987 | DE3628240A1 Allyl ethers of galactopyranose, process for their preparation and polymerisation and use of the polymers |
| 03/04/1987 | EP0213095A2 Peroxygen breaker systems for well completion fluids |
| 03/04/1987 | EP0212671A2 Method for emplacement of a gelatinous foam in gas flooding enhanced recovery |
| 03/04/1987 | EP0212265A1 Quaternized alkoxylated polycondensates, process for their preparation and their use |
| 03/04/1987 | EP0212019A1 Method of stabilizing fines |
| 03/04/1987 | CN86105387A Hydrauliccement |
| 03/04/1987 | CN86105351A Improved method for pressing-in water into fluidum-storing rocks containing clay minerals, in particular into hydrocarbon sites formed by sandstones, sands, marlaceous sandstones |
| 03/03/1987 | US4647859 Method for effecting electric well logging with introduction of a fluid composition to minimize the effect of interfering ions |
| 03/03/1987 | US4647603 Anionic polymer, vinylpyridine cationic polymer |
| 03/03/1987 | US4647385 Hypochlorite, tertiary amine |
| 03/03/1987 | US4647384 Aqueous drilling fluids containing fluid loss additives |
| 03/03/1987 | US4647312 Oil recovery process employing a complexed polysaccharide |
| 03/03/1987 | US4646837 Mixture of surfactant and hydrocarbon |
| 03/03/1987 | US4646835 Aqueous acid component and water-soluble organosilicon compound |
| 03/03/1987 | US4646834 Aqueous treatment fluid and method of use |
| 03/03/1987 | US4646833 Flooding to recover oil from subterranean formations and employing injection of hot, low-viscosity polymer solution that becomes more viscous than the oil out in the formation |
| 03/03/1987 | CA1218519A1 Low toxicity oil-based drilling fluid |
| 02/26/1987 | WO1987001058A1 Method for clearing deposits from the inner surface of a pipeline and applying protective coating thereto |
| 02/25/1987 | EP0211288A2 A polysaccharide polymer made by xanthomonas |
| 02/24/1987 | US4645609 Sulfonated asphalt/causticized lignite blend |
| 02/24/1987 | CA1218498A1 Water-soluble polymers of controlled low molecular weight |
| 02/24/1987 | CA1218229A1 PROCESS FOR THE RECOVERY OF HYDROCARBONS USING ANIONIC SURFACTANTS OF THE .alpha.-SULFOCARBOXYLIC ACIDS ESTERS GROUP |
| 02/24/1987 | CA1218228A1 Method and compositions for fracturing subterranean formations |
| 02/24/1987 | CA1218227A1 Sulfonate dimer surfactant additives for steam foam drives and a process of stimulating hydrocarbon recovery from a subterranean formation |
| 02/18/1987 | CN86103051A High temp. oil well repairing agent and the uses thereof |
| 02/17/1987 | US4644073 Permeability contrast correction employing a sulfate-free propionate-sequestered chromium (III) solution |
| 02/17/1987 | US4644035 Imidation of styrene-maleicanhydaide copolymer |
| 02/17/1987 | US4644020 Production of high molecular weight vinyl lactam polymers and copolymers |
| 02/17/1987 | US4643256 Steam-foaming surfactant mixtures which are tolerant of divalent ions |
| 02/17/1987 | US4643255 Gel and process for preventing loss of circulation, and combination process for enhanced recovery |
| 02/17/1987 | US4643254 Injected dilute hydrochloric acid and sodium silicate then shutting well |
| 02/17/1987 | US4643253 Oil recovery process |
| 02/17/1987 | CA1217933A1 Fluid composition for drilling |
| 02/17/1987 | CA1217932A1 Compositions and methods for reducing the permeability of underground strata |
| 02/17/1987 | CA1217931A1 Process for stimulating petroleum production wells |
| 02/17/1987 | CA1217930A1 Composition and method for treating a subterranean formation |
| 02/17/1987 | CA1217929A1 Composition and method for treating a subterranean formation |
| 02/17/1987 | CA1217928A1 Micellar slug for oil recovery |
| 02/11/1987 | CN86105280A Process for preparation of modified polysaccharide and composition containing the polysaccharide |
| 02/10/1987 | US4642289 Process for cell disruption |
| 02/10/1987 | CA1217629A Process for conformance control using a polymer flucculate |
| 02/04/1987 | EP0210427A1 Process for retarding and controlling the formation of gels or precipitates derived from aluminium and corresponding compositions, plus the corresponding applications - in particular regarding oil wells |
| 02/04/1987 | CN86104606A Mixed metal hydroxides for thickening water or hydrophylic fluids |
| 02/03/1987 | US4640942 Acrylamidopropanesulfonic acid copolymers and carboxymethyl-hydroxyethyl cellulose |
| 02/03/1987 | US4640786 High temperatures |
| 02/03/1987 | US4640361 Thermally responsive aqueous silicate mixtures and use thereof |
| 02/03/1987 | US4640358 Oil recovery process employing a complexed polysaccharide |
| 02/03/1987 | US4640357 Blocking fractures, flushing, flooding |