| 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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| 06/21/1993 | CA2085393A1 Metering of two-phase fluids using flow homogenizing devices and chemicals |
| 06/18/1993 | CA2101172A1 Drilling fluid composition and process for the filtrate reduction of drilling fluid compositions containing mixed metal hydroxides |
| 06/17/1993 | CA2057750A1 Process for producing a high strength artificial (cast) stone with high permeability and filter effect |
| 06/16/1993 | EP0528909A4 Lubricant composition |
| 06/15/1993 | US5219479 Self-emulsifying ester compounds |
| 06/15/1993 | US5219476 Gellable aqueous composition and its use in enhanced petroleum recovery |
| 06/15/1993 | US5219475 Water-soluble polymer crosslinkable with chromium ions |
| 06/10/1993 | WO1993011205A1 Fire retarded solvents |
| 06/10/1993 | WO1993011202A1 Drilling mud additive |
| 06/09/1993 | EP0545677A1 Well drilling fluids and methods |
| 06/09/1993 | CN1072989A Underground petroleum-containing formations and equipment associated therewith |
| 06/09/1993 | CN1021115C Polyalky leneoxyamine catalysts for dialkyl disulfides and/or polysulfides used in dissolving sulfur |
| 06/08/1993 | US5218038 Phenolic resin coated proppants with reduced hydraulic fluid interaction |
| 06/08/1993 | US5217632 Stirring a mixture of alpha hydroxy carboxylate, a polyol and water to uniformity, adding boric acid or borax to farm chelate and basification |
| 06/08/1993 | US5217531 Using acrylamide-vinylpyrrolidone copolymer |
| 06/08/1993 | US5217074 Method of fracturing formations |
| 06/07/1993 | CA2084638A1 Well drilling fluids and methods |
| 06/02/1993 | EP0544377A1 Aqueous gellable composition containing an anti-syneresis agent |
| 06/02/1993 | EP0544158A1 Use of homo- or co-polymers based on quaternised 1-vinyl imidazoles as organic polyelectrolyte |
| 06/02/1993 | EP0530204A4 Dispersant compositions for subterranean well drilling and completion |
| 06/02/1993 | EP0525037A4 Dispersant compositions for subterranean well drilling and completion |
| 06/01/1993 | US5215681 Thickeners for aqueous fluids |
| 06/01/1993 | US5215147 Positioning drillable packer in wellbore, adding first resin, hardening, adding second resin |
| 06/01/1993 | US5215146 Method for reducing startup time during a steam assisted gravity drainage process in parallel horizontal wells |
| 06/01/1993 | CA1318621C Heteropolysaccharide s-657 |
| 05/25/1993 | US5213166 Pile driving and pile removing method |
| 05/25/1993 | US5213161 Well cementing method using acid removable low density well cement compositions |
| 05/25/1993 | US5213160 Cementing a well with a water setting hydraulic slurry, displacement and hardening |
| 05/25/1993 | CA1318242C Method for plugging lost circulation areas and lost circulation material to be used therefor |
| 05/25/1993 | CA1318124C Drilling mud additives based on a polymer mixture, their use, and a process for their production |
| 05/25/1993 | CA1318123C Inhibition of reservoir scale |
| 05/25/1993 | CA1318122C Reducing sludging during oil well acidizing |
| 05/25/1993 | CA1318121C Inhibition of hydrate formation |
| 05/19/1993 | EP0542645A1 Aqueous soluble polymers and/or copolymers with enhanced biodegradability and their use |
| 05/19/1993 | EP0542397A2 Improved phenolic resin coated proppants with reduced hydraulic fluid interaction |
| 05/19/1993 | EP0542266A2 Organoclay compositions prepared with a mixture of two organic cations and their use in non-aqueous systems |
| 05/19/1993 | EP0541606A1 Use of Surface-Active Alkyglycoside Compounds in Oil-Based Bore-Flushing Agents and other Borehole-Treatment Fluids. |
| 05/19/1993 | CN1072192A Enhanced solubility of welan gum in ethylene glycol |
| 05/19/1993 | CA2079945A1 Formation treating |
| 05/18/1993 | US5211859 Low pH fracturing compositions |
| 05/18/1993 | US5211858 Lanthanide-crosslinked polymers for subterranean fluid containment |
| 05/18/1993 | US5211250 Potassium salt, polymer of high moecular weight |
| 05/18/1993 | US5211239 Method of maintaining subterranean formation permeability and inhibiting clay swelling |
| 05/18/1993 | US5211238 Method using micro-sphere cement slurries for deviated wells |
| 05/18/1993 | US5211237 Precipitation of scale inhibitors |
| 05/18/1993 | US5211236 Sand control agent and process |
| 05/18/1993 | US5211235 Sand control agent and process |
| 05/18/1993 | US5211232 In-situ silica cementation for profile control during steam injection |
| 05/18/1993 | US5211231 Enhanced oil recovery |
| 05/18/1993 | CA1317755C Stabilizing clayey formations |
| 05/18/1993 | CA1317754C Cementing composition and aqueous hydraulic cementing solution comprising water-soluble, nonionic hydrophobically modified hydroxyethyl cellulose |
| 05/18/1993 | CA1317753C Fracturing with a mixture of carbon dioxide and alcohol |
| 05/13/1993 | WO1993009332A1 Cement slurries for deviated wells |
| 05/13/1993 | WO1993009201A1 Thermally stable oil-base drilling fluid |
| 05/11/1993 | US5210324 Making polyalkyleneoxy allyl ethers by dissolving alcohol in solvent capable of forming azeotrope with water, azeotroping mixture to remove water, adding alkali metal alkoxide, removing alkanol, reacting alcoholate with allyl halide |
| 05/11/1993 | US5209859 Inhibited acid system for acidizing wells |
| 05/11/1993 | US5209297 Adding highly viscous thixotropic agent to water based fluid, gelation of alkali metal silicate in acid |
| 05/11/1993 | US5209296 Dissolving sand and fines with acid, consolidation to cement |
| 05/11/1993 | US5209295 In-situ reduction of oil viscosity during steam injection process in EOR |
| 05/11/1993 | CA1317540C Oil recovery process using microbial combinations |
| 05/11/1993 | CA1317453C Oil recovery process using a treated polymer solution (880002 can 000) |
| 05/11/1993 | CA1317452C Fluid loss additives for well cementing compositions |
| 05/11/1993 | CA1317451C Hydrolyzed co-polymers of n-vinylamide and acrylamide for use as waterloss control additives in drilling mud |
| 05/11/1993 | CA1317448C Drilling fluid thinner |
| 05/07/1993 | CA2055011A1 Thermally stable hydrophobically associating rheological control additives for water-based drilling fluids |
| 05/05/1993 | EP0540204A2 Method of fracturing formations |
| 05/05/1993 | EP0539810A1 Drilling fluid additive and method for inhibiting hydration |
| 05/05/1993 | EP0539582A1 Adducts of clay and activated mixed metal oxides. |
| 05/04/1993 | US5208216 Acrylamide terpolymer shale stabilizing additive for low viscosity oil and gas drilling operations |
| 05/04/1993 | US5207953 Mixture with acyclic brominated hydrocarbon; oil and gas well fluids |
| 05/04/1993 | US5207934 Crosslinked hydroxyethylcellulose and its uses |
| 05/04/1993 | US5207919 Copper Complex of Ethylenediaminetetrakis/methylenephosphonic Acid/ |
| 05/04/1993 | US5207832 Lightened cement grout suitable for the cementation of hydrocarbon production wells |
| 05/04/1993 | US5207831 Cement fluid loss reduction |
| 05/04/1993 | US5207778 Method of matrix acidizing |
| 05/04/1993 | US5207282 Method for inhibiting the initiation and propagation of formation fractures while drilling and casing a well |
| 05/04/1993 | CA1317099C Compositions for freeing jammed drill pipes |
| 05/04/1993 | CA1317098C Viscous oil recovery by removing fines |
| 04/30/1993 | CA2079296A1 Method of fracturing formations |
| 04/29/1993 | WO1993008230A1 Cellulose ether thickening compositions |
| 04/29/1993 | WO1993008131A1 Method for removing calcium sulfate scale |
| 04/29/1993 | CA2070694A1 Drilling fluid additive and method for inhibiting hydration |
| 04/28/1993 | EP0539289A1 Use of weak gels containing a polyacrylamide and glyoxale for selectively reducing water permeability |
| 04/28/1993 | EP0538989A2 Well cement compositions and their use |
| 04/28/1993 | CN1071436A Graft capolymers of lignin (2-propenamide)-1-(phenylethene), method of making same and uses therefor |
| 04/27/1993 | CA1316684C Process for secondary oil recovery utilizing propoxylated ethoxylated surfactants in seawater |
| 04/27/1993 | CA1316683C Aqueous surfactant mixtures, and the use thereof in the recovery of crude oil |
| 04/27/1993 | CA1316682C Inhibition of reservoir scale |
| 04/27/1993 | CA1316681C Process for recovering oil |
| 04/21/1993 | CN1071146A Method for control of biofouling |
| 04/20/1993 | US5204444 Polycondensation of epoxy alcohols with polyhdric alcohols and thermal condensation to form polyethercyclicpolyols |
| 04/20/1993 | US5204320 Drilling mud additive comprising ferrous sulfate and poly(N-vinyl-2-pyrrolidone/sodium 2-acrylamido-2-methylpropane sulfonate) |
| 04/20/1993 | US5204183 Composition comprising polymer encapsulant for sealing layer encapsulated substrate |
| 04/20/1993 | US5203834 Enhanced recovery of nonaqueous fluids from subterranean formations |
| 04/20/1993 | US5203413 Product and process for acid diversion in the treatment of subterranean formations |
| 04/20/1993 | US5203411 Enhanced oil recovery |
| 04/20/1993 | CA1316340C Saturated brine well treating fluids and additive therefor |
| 04/15/1993 | WO1993007307A1 Derivatives of polyalkylenepolyamines as corrosion inhibitors |
| 04/15/1993 | CA2119574A1 Derivatives of polyalkylenepolyamines as corrosion inhibitors |
| 04/14/1993 | EP0536950A1 Method for inhibiting hydrate formation |