| 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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| 04/11/2001 | CN1291253A Foam compsoite oil drive method |
| 04/11/2001 | CN1290804A Method for preparing controlled size microgel |
| 04/10/2001 | US6214773 High temperature, low residue well treating fluids and methods |
| 04/10/2001 | US6214091 Ammonium and phosphonium hydration inhibitors such as the diester of dibutyldiethanol ammonium bromide and coconut fatty acid; for transport of hydrocarbon fluids |
| 04/10/2001 | US6213214 Pipeline treatment composites |
| 04/10/2001 | US6213213 Methods and viscosified compositions for treating wells |
| 04/10/2001 | US6213211 Using of stokes law cement slurries for improved well cementation |
| 04/10/2001 | US6213209 Methods of preventing the production of sand with well fluids |
| 04/05/2001 | WO2001023703A1 A method of improving the permeability of an underground petroleum-containing formation |
| 04/05/2001 | WO2000078891A8 Oil based drilling fluid and copolymer based on styrene, lauryl methacrylate and (meth)acrylic acid |
| 04/04/2001 | EP0951612B1 Method for drying out rock containing immobile formation water within the encroachment area of natural gas deposits and gas reservoirs |
| 04/03/2001 | US6211120 Application of aluminum chlorohydrate in viscosifying brine for carrying proppants in gravel packing |
| 04/03/2001 | US6211119 Multiphase lubricant concentrates for use in water based systems in the field of exploratory soil drilling |
| 04/03/2001 | US6210476 The foamed cement with improved properties are comprised of hydraulic cement, amorphous silica surface treated with a mixture of organosilane coupling agents, water, gas and a mixture of foam stabilizer and foaming surfactants |
| 04/03/2001 | US6209646 Causing liquid chemical additive to be absorbed into porous solid material whereby liquid chemical is encapsulated thereby and combining said encapsulated liquid chemical additive with treating fluid, introducing into well |
| 04/03/2001 | US6209643 Method of controlling particulate flowback in subterranean wells and introducing treatment chemicals |
| 04/03/2001 | CA2058636C Use of selected ester oils in water-based drilling fluids of the o/w emulsion type and corresponding drilling fluids with improved ecological acceptability |
| 04/03/2001 | CA2009689C Oleophilic basic amine compounds as an additive for invert drilling muds |
| 03/29/2001 | WO2001021726A1 Emulsified gelant |
| 03/29/2001 | CA2388455A1 Emulsified gelling disproportionate permeability reducers |
| 03/28/2001 | EP1086976A1 Process for preparing microgels of controlled size |
| 03/27/2001 | US6207620 Injecting into said open fractures a formation treating composition including an encapsulated formation etching agent and a carrier fluid |
| 03/27/2001 | US6206113 Non-cryogenic nitrogen for on-site downhole drilling and post drilling operations apparatus |
| 03/27/2001 | US6206103 Solid, self sustaining body including nonylphenol ethoxylate having at least 50 moles of ethylene dioxide per mole of nonylphenol; low solubility, high specific gravity, and high melting point |
| 03/27/2001 | US6206102 Injecting a dispersion of an organosilicon compound, a hydrophilic water-miscible dispersion medium, and a dispersant |
| 03/27/2001 | CA2090306E Oil and gas well operation fluid used for the solvation of waxes and asphaltenes, and method of use thereof |
| 03/27/2001 | CA2057005C Use of selected oleophilic alcohols in water-based drilling fluids of the o/w emulsion type and corresponding drilling fluids with improved ecological acceptability |
| 03/27/2001 | CA2023215C Hydrophobically modified hydroxybutyl ethers of polygalactomannan |
| 03/22/2001 | CA2320620A1 Hydraulic fracturing using non-ionic surfactant gelling agent |
| 03/21/2001 | EP1083986A1 Dispersions containing homopolymers or copolymers of hydroxy carboxylic acids as a rheological additive |
| 03/21/2001 | EP0995012B1 Ether carboxylic acids as asphalt dispersants in crude oils |
| 03/21/2001 | EP0912633B1 Additivation of cellulose nanofibrils with carboxyl cellulose with low degree of substitution |
| 03/21/2001 | CN1063474C Plugging liquid for plugging a subterranean formation zone |
| 03/21/2001 | CN1063417C Method for inhibiting hydrate formation |
| 03/21/2001 | CN1063416C Method for inhibiting hydrate formation |
| 03/20/2001 | US6204420 Synergistic mixtures of phosphoric esters with carboxylic acids or carboxylic acid derivatives as asphaltene dispersants |
| 03/20/2001 | US6204224 Polyalkyl methacrylate copolymers for rheological modification and filtration control for ester and synthetic based drilling fluids |
| 03/16/2001 | CA2318703A1 Compositions and methods for cementing using elastic particles |
| 03/15/2001 | WO2001018147A1 Quaternary ammonium salts as thickening agents for aqueous systems |
| 03/13/2001 | CA2199169C Delayed breaking of gelled hydrocarbon fracturing fluid |
| 03/08/2001 | WO2001016187A1 Aqueous gelled composition comprising a block copolymer including at least a water soluble block and a hydrophobic block |
| 03/07/2001 | EP1081112A1 Dispersant and fluid loss control additive for well cement |
| 03/07/2001 | EP1080067A1 Biodegradable corrosion inhibitors |
| 03/07/2001 | CN1062835C Method of activation of clay and activated clay |
| 03/06/2001 | US6197730 Thermostable enzyme breakers for hydrolysis of galactomannans in hydraulic fracturing fluids |
| 03/06/2001 | US6197100 Dispersible water soluble polymers |
| 03/06/2001 | US6196320 Method of cleaning a well bore prior to installing a water based fluid system |
| 03/06/2001 | US6196317 Method and compositions for reducing the permeabilities of subterranean zones |
| 03/06/2001 | US6196316 Compositions for use in well construction, repair and/or abandonment |
| 03/06/2001 | US6196315 Methods for treating underground formations |
| 03/06/2001 | US6196314 Insoluble salt control system and method |
| 02/28/2001 | EP1078897A1 Early enhanced strength cement composition |
| 02/28/2001 | EP0699269B1 Method for placement of a scale inhibitor in a formation |
| 02/28/2001 | CN1285862A Invert emulsion drilling fluid containing mixture of secondary esters obtained by conversion of olefins, and preparation thereof |
| 02/27/2001 | US6194622 Method for inhibiting hydrate formation |
| 02/27/2001 | US6194361 Lubricant composition |
| 02/27/2001 | US6194356 Gelling composition for wellbore service fluids |
| 02/27/2001 | US6194355 Use of alkoxylated surfactants and aluminum chlorohydrate to improve brine-based drilling fluids |
| 02/27/2001 | US6194354 Anionic surfactant, 0 to 70% by weight, based on surfactant, of an alkanolamide, and 0 to 20% by weight of other non-ionic and/or amphoteric surfactants, copolymeric chain comprising 3 to 20 ethoxy and propoxy units |
| 02/27/2001 | US6194216 Isolating additive from sample, placing into cuvette, exposing to ultraviolet light, and measuring count value of fluorescence spectrum at its peak using a spectrometer |
| 02/27/2001 | US6192987 Metal corrosion inhibitors, inhibited acid compositions and methods |
| 02/27/2001 | US6192986 Blocking composition for use in subterranean formation |
| 02/27/2001 | US6192985 Fluids and techniques for maximizing fracture fluid clean-up |
| 02/26/2001 | CA2316711A1 Early-enhanced strength cement compositions and methods |
| 02/24/2001 | CA2316059A1 Methods and compositions for use in cementing in cold environments |
| 02/22/2001 | WO2001012952A1 Tunnel boring method |
| 02/22/2001 | WO2001012951A1 Recovery of oil |
| 02/22/2001 | WO2001012878A1 Mercaptoalcohol corrosion inhibitors |
| 02/20/2001 | US6191076 Method of converting olefins into mixtures of secondary esters, products and uses thereof |
| 02/20/2001 | US6189615 Gelation solution which includes an acrylamide polymer, chromium(iii) complex crosslinking agent having one or more carboxylate anions; reducing the permeability of or fluid mobility within a carbonate-containing treatment region |
| 02/20/2001 | CA2197800C A method for inhibiting hydrate formation |
| 02/20/2001 | CA2044418C Aminoalkylphosphinates and phosphinic-acid-containing polymers therefrom |
| 02/15/2001 | WO2001010976A1 Divalent cation-containing well drilling and servicing fluids |
| 02/14/2001 | EP1076113A1 High performance phosphorus-containing corrosion inhibitors for inhibiting corrosion by drilling system fluids |
| 02/13/2001 | US6187839 Methods of sealing compositions and methods |
| 02/13/2001 | US6187720 Delayed release breakers in gelled hydrocarbons |
| 02/13/2001 | US6187719 Less temperature dependent drilling fluids for use in deep water and directional drilling and processes for providing less temperature dependent rheological properties to such drilling fluids |
| 02/13/2001 | US6186235 Stable breaker-crosslinker-polymer complex and method of use in completion and stimulation |
| 02/13/2001 | US6186231 Reducing the permeability of a region of an underground formation by injecting a gelant solution including an aqueous solvent, the title graft polymer and a crosslinker comprising a chromium-carboxylic acid salt/complex; stability; control |
| 02/13/2001 | CA2160486C Process for the preparation of immunogens or diagnostic reagents, and immunogens or diagnostic reagents thereby obtainable |
| 02/13/2001 | CA2022845C Method and composition for cementing in a wellbore |
| 02/09/2001 | CA2313877A1 Improved high performance phosphorus-containing corrosion inhibitors forinhibiting corrosion by drilling system fluids |
| 02/08/2001 | WO2001009482A1 Gelling system for hydrocarbon fluids |
| 02/08/2001 | WO2001009082A1 Process for preparing esterquats |
| 02/08/2001 | WO2001009056A1 A low-density and low-porosity cementing slurry for oil wells or the like |
| 02/08/2001 | WO2001009039A1 Method and composition for scavenging sulphide in drilling fluids |
| 02/08/2001 | CA2380357A1 Gelling system for hydrocarbon fluids |
| 02/08/2001 | CA2379897A1 Method and composition for scavenging sulphide in drilling fluids |
| 02/07/2001 | EP1074598A1 Divalent cation-containing well drilling and servicing fluids |
| 02/07/2001 | EP1073699A1 Methods and compositions for delaying the crosslinking of crosslinkable polysaccharide-based lost circulation materials |
| 02/07/2001 | EP1029149A4 Viscoelastic surfactant fracturing fluids and a method for fracturing subterranean formations |
| 02/06/2001 | US6184321 Dispersing mineral material in aqueous medium, by employing a polymer as a milling agent and/or dispersant |
| 02/06/2001 | US6184287 Polymeric latexes prepared in the presence of 2-acrylamido-2-methylpropanesulfonate |
| 02/06/2001 | US6184184 Comprising a hydrocarbon base, neutralized alkyl phosphate esters complexed with metallic cations to form a gel, in said hydrocarbon base |
| 02/06/2001 | US6182759 Process for treating water-containing natural gas wells and natural gas storage wells |
| 02/06/2001 | US6182758 Dispersant and fluid loss control additives for well cements, well cement compositions and methods |
| 02/06/2001 | CA2230018C Corrosion inhibition by ethoxylated fatty amine salts of maleated unsaturated acids |
| 02/06/2001 | CA2175900C Well cleanout system and method |
| 02/01/2001 | WO2001007750A1 Method for injecting dense additive into drilling wells and composition therefore |
| 02/01/2001 | WO2001006999A1 Low molecular weight water soluble polymer composition and method of use |