| 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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| 09/16/1993 | WO1993018278A1 Novel enzyme complex for breaking blocking gels |
| 09/16/1993 | WO1993018111A1 Materials incorporating cellulose fibres, methods for their production and products incorporating such materials |
| 09/15/1993 | EP0559783A1 Encapsulations for treating subterranian formations and methods for the use thereof. |
| 09/15/1993 | CN1022122C Improved technique for filling water |
| 09/15/1993 | CN1022121C Altering subterranean formation permeability |
| 09/15/1993 | CN1022119C Method for preventing lost circulation fluid for oil field drilling operations |
| 09/14/1993 | US5244937 Stable nonagglomerating aqueous suspensions of oil soluble polymeric friction reducers |
| 09/14/1993 | US5244936 Enhanced oil recovery profile control with crosslinked anionic acrylamide copolymer gels |
| 09/14/1993 | US5244878 Process for delaying the formation and/or reducing the agglomeration tendency of hydrates |
| 09/14/1993 | US5244877 Rheologically stable water-based high temperature drilling fluids |
| 09/14/1993 | US5244043 Controlled quantities of brine to precipitate scale; scale inhibitor to delay precipitation |
| 09/14/1993 | US5244042 Lanthanide-crosslinked polymers for subterranean injection |
| 09/12/1993 | CA2091417A1 Oil recovery process using mobility control fluid comprising alkylated diphenyloxide sulfonates and foam forming amphoteric surfactants |
| 09/08/1993 | EP0559418A2 Process for decomposing polysaccharides in alkaline aqueous systems |
| 09/07/1993 | USRE34371 Mixture of compacted and sintered kaolin clay and silica not containing mullite and crystabolite |
| 09/07/1993 | US5243190 Radioactive tracing with particles |
| 09/07/1993 | US5242899 Emulsfiying agent, reverse emulsions produced using this emulsifying agent and use of these emulsions in drilling wells |
| 09/07/1993 | US5242021 Method and device for consolidation a formation crossed by a well |
| 09/02/1993 | WO1993017218A1 Enzyme breaker for galactomannan based fracturing fluid |
| 09/02/1993 | WO1993017217A1 Fluid system for controlling fluid losses during hydrocarbon recovery operations |
| 09/01/1993 | EP0558232A1 Well cement methods and compositions |
| 08/31/1993 | US5240654 Calcination of ultrafine bauxite particles |
| 08/25/1993 | EP0557146A1 Compositions based on gels and their use for the selective reduction of the water permeability in warm and salt reservoirs |
| 08/25/1993 | EP0556246A1 Additive for a drilling fluid |
| 08/24/1993 | US5238068 Methods of fracture acidizing subterranean formations |
| 08/24/1993 | US5238067 Improved means of fracture acidizing carbonate formations |
| 08/24/1993 | US5238065 Process and composition to enhance removal of polymer-containing filter cakes from wellbores |
| 08/24/1993 | US5238064 Squeeze cementing |
| 08/24/1993 | CA1321673C Low weight acrylamide acrylate copolymer and process to hinder at least partially the formation of salt deposits from aqueous media |
| 08/20/1993 | CA2089854A1 Acid removable low density well cement compositions and methods |
| 08/19/1993 | WO1993016145A1 Functional fluid |
| 08/18/1993 | EP0556113A1 Composition used as a cement slurry containing scleroglucane |
| 08/18/1993 | EP0555349A1 Breaker system for high viscosity fluids and method of use |
| 08/18/1993 | EP0555210A1 Microbiocidal combinations of materials and their use |
| 08/17/1993 | US5236046 Heteropolysaccharide preparation and use thereof as a mobility control agent in enhanced oil recovery |
| 08/16/1993 | WO1993016144A1 High density aqueous compositions |
| 08/16/1993 | CA2130103A1 High density aqueous compositions |
| 08/14/1993 | WO1993016268A1 Method of maintaining subterranean formation permeability and inhibiting clay swelling |
| 08/13/1993 | CA2089340A1 Compositions based on scleroglucane and their use as cementation buffer |
| 08/11/1993 | EP0323952B1 Family of xanthan-based polysaccharide polymers including non-acetylated and/or non-pyruvylated gum and acetylated or non-acetylated polytetramer gum |
| 08/10/1993 | US5234602 Method for regenerating scale solvent |
| 08/10/1993 | US5234054 Method for foam emplacement in gas flooding for enhanced oil recovery |
| 08/06/1993 | CA2088897A1 Low temperature well cementing compositions and methods |
| 08/05/1993 | WO1993015164A1 Method for inhibiting reactive argillaceous formations and use thereof in a drilling fluid |
| 08/05/1993 | WO1993015094A1 Product of modification of vegetable raw material and method for obtaining it and its use |
| 08/05/1993 | DE4216472C1 Investigation of heavy metal contaminated soils - includes sealing walls of borehole using mixts. of polymeric pyrrolidinium salts with alkali silicate(s) or with bentonite-modified montan wax emulsions an limiting boring speed |
| 08/04/1993 | CA2088735A1 Gel based compositions and their use in selective reduction of water permeability in hot and dirty storage tanks |
| 08/03/1993 | US5233055 Copolymerization of polyethercyclicpolyols with epoxy resins |
| 08/03/1993 | US5233032 Hydrophobically modified hydroxybutyl ethers of polygalactomannan |
| 08/03/1993 | US5232955 Process for producing a high strength artificial (cast) stone with high permeability and filter effect |
| 08/03/1993 | US5232910 Emulsion having continuous oil phase containing mono- or polyunsaturated monocarboxylic ester from fatty acid and mono-alcohol, disperse aqueous phase with emulsifier, lime, weighting agents, thickeners, fluid-loss additives |
| 08/03/1993 | US5232627 Thickening aqueous caly dispersion by stirring a mixed metal oxide compound therein |
| 08/03/1993 | US5232497 With quaternary ammonium alkyl substituted salts |
| 08/03/1993 | US5232050 Conditioning of formation for sandstone acidizing |
| 08/03/1993 | US5232049 Sequentially flooding a subterranean hydrocarbon-bearing formation with a repeating cycle of immiscible displacement gases |
| 07/28/1993 | EP0552838A1 Inhibition of steel corrosion |
| 07/28/1993 | EP0552330A1 Drilling, completion, and workover fluids comprising ground peanut hulls |
| 07/27/1993 | US5230814 Hydrocarbon recovery comprising injecting a slug comprising oil soluble alkoxylated surfactants from lignin |
| 07/27/1993 | CA1320635C Flowability improving agent, process for the production thereof and use thereof |
| 07/21/1993 | CN1021661C Stabilized sulfur dissolving compositions |
| 07/20/1993 | US5229449 Copolymer of polymerizable components in naphtha oil and maleic anhydride, process for producing said copolymer, and derivatives thereof |
| 07/20/1993 | US5229019 Low fluid leakoff cementing compositions and filtration control additive for cement |
| 07/20/1993 | US5229018 Drilling slurry for bore hole circulation containing fluids and sealing agents |
| 07/20/1993 | US5229017 Method of enhancing methane production from coal seams by dewatering |
| 07/20/1993 | US5228915 Fluid loss control additives for oil well cementing compositions |
| 07/20/1993 | US5228524 Fluid system for controlling fluid losses during hydrocarbon recovery operations |
| 07/20/1993 | CA1320502C Polyalkyleneoxyamine catalysts for dialkyl disulfides and/or polysulfides used in dissolving sulfur |
| 07/20/1993 | CA1320435C Method for reducing selectively water infiltrations in gas or oil bearing wells |
| 07/14/1993 | EP0551021A1 Method of gelling hydrocarbons and treatment of subterranean formations therewith |
| 07/14/1993 | CN1021585C Kill fluid for oil field operation |
| 07/13/1993 | US5226961 High temperature wellbore cement slurry |
| 07/13/1993 | US5226481 Method for increasing the stability of water-based fracturing fluids |
| 07/13/1993 | US5226480 Well stimulation, enhanced oil recovery, subterranean fluid containment |
| 07/13/1993 | US5226479 Fracturing subterranean formations |
| 07/13/1993 | CA1320303C Aminoalkylated polyacrylamide aldehyde gels, their preparation and use in oil recovery |
| 07/08/1993 | WO1993013294A1 Use of selected inhibitors against the formation of solid organic-based incrustations from fluid hydrocarbon mixtures |
| 07/08/1993 | WO1993013029A1 Fluid loss additives for cementing compositions |
| 07/08/1993 | DE4200139A1 New poly-1,1-tetra-methylene- 3,3,4,4'-tetra:methylene-pyrrolidinium salts - useful as viscosifier(s) and sacrificial agents in enhanced oil recovery |
| 07/07/1993 | EP0549770A1 Methods of drilling well boreholes and compositions used therein |
| 07/07/1993 | EP0549693A1 Process for producing bentonite clays exhibiting enhanced solution viscosity properties |
| 07/06/1993 | US5225090 Visible gels prepared using stainless steel as a crosslinking agent |
| 07/06/1993 | US5224988 Precipitation in coagulum with a surfactant for improving dispersibility and filterability |
| 07/06/1993 | US5224546 Method of breaking metal-crosslinked polymers |
| 07/06/1993 | US5224544 Blending water and polymer with crosslinking, pumping and adding an enzyme breaker to degrade the polymer for blocking |
| 07/06/1993 | US5224543 Use of scale inhibitors in hydraulic fracture fluids to prevent scale build-up |
| 07/06/1993 | CA1319929C Water-in-oil emulsions |
| 07/06/1993 | CA1319819C Formation fracturing process |
| 07/01/1993 | DE4143056A1 Verwendung ausgewaehlter inhibitoren gegen die ausbildung fester inkrustationen auf organischer basis aus fliessfaehigen kohlenwasserstoffgemischen Use of selected inhibitors against the education of solid incrustations on an organic basis of fliessfaehigen hydrocarbon mixtures |
| 06/29/1993 | US5223592 Process for polymerization of itaconic acid |
| 06/29/1993 | US5223175 Dispersed aqueous solution of glyoxal and acetic acid or sodium acetate buffer, saturated liquid hydrocarbon, emulsifier |
| 06/29/1993 | US5223159 Delayed breaking metal crosslinked polymer compositions |
| 06/29/1993 | US5223127 Hydrogen sulfide scavengers in fuels, hydrocarbons and water using amidines and polyamidines |
| 06/29/1993 | US5222556 Acidizing method for gravel packing wells |
| 06/29/1993 | CA1319673C Water-in-oil emulsions |
| 06/29/1993 | CA1319604C Recovery of heavy crude oil or tar sand oil or bitumen from underground formations |
| 06/24/1993 | WO1993012194A1 Drilling mud composition and process for reducing the filtrate of metal hydroxide mixtures-containing drilling mud compositions |
| 06/24/1993 | DE4141605A1 Verfahren zur filtratreduzierung von gemischte metallhydroxide enthaltenden bohrspuelungen Method for drilling fluids containing filtrate reduction of mixed hydroxides |
| 06/23/1993 | EP0500664B1 Improved method for transporting particles in a porous medium |
| 06/22/1993 | US5221489 Sulfonated polymeric dispersant compositions for subterranean well drilling, completion, and cementing |
| 06/22/1993 | US5220960 Pumping aqueous acid solution to remove by dissolution |