| 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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| 03/20/2003 | WO2003023177A2 Methods for controlling screenouts |
| 03/20/2003 | US20030054963 Mixing fast-hydrating high-viscosity guar powder to hydrating liquid to prepare well-treating fluid, hydrating guar powder, mixing cross-linker to well-treating fluid, introducing well-treating fluid to wellbore |
| 03/20/2003 | US20030054962 Methods for stimulating hydrocarbon production |
| 03/20/2003 | US20030054961 Methods of drilling well bores using invertible oil external-water internal drilling fluids |
| 03/20/2003 | US20030051872 In situ thermal processing of a coal formation with heat sources located at an edge of a coal layer |
| 03/20/2003 | US20030051395 Oil production additive formulations |
| 03/19/2003 | EP1293550A2 Drilling using invertible emulsion drilling fluids |
| 03/19/2003 | EP1292759A1 Process for altering the relative permeability of a hydrocarbon-bearing formation |
| 03/19/2003 | EP1292756A2 Composition for controlling wellbore fluid and gas invasion and method for using same |
| 03/19/2003 | EP1292651A2 Viscoelastic surfactants and compositions containing same |
| 03/18/2003 | US6534449 Removing oil-containing residue that impairs hydrocarbon-production in an open-hole reservoir by injecting a wellbore fluid composition comprising a terpene composition, a viscosifier, and a surfactant |
| 03/18/2003 | US6534448 Composition and method for acidizing wells and equipment without damaging precipitation |
| 03/18/2003 | CA2274875C Process for stablizing the gas flow in water-bearing natural gas fields and natural gas reservoirs |
| 03/14/2003 | CA2403079A1 Methods of drilling well bores using invertible oil external-water internal drilling fluids |
| 03/13/2003 | WO2003021078A1 Method for inhibiting hydrate formation |
| 03/13/2003 | WO2003021031A1 Phosphorus compounds |
| 03/13/2003 | WO2003020845A1 LOST CIRCULATION MATERIALS (LCM's) EFFECTIVE TO MAINTAIN EMULSION STABILITY OF DRILLING FLUIDS |
| 03/13/2003 | WO2003020844A1 Drilling fluid, apparatus, and method |
| 03/13/2003 | CA2458999A1 Drilling fluid, apparatus, and method |
| 03/12/2003 | EP1291489A2 Method for increasing the permeability of a subterranean formation |
| 03/12/2003 | EP1290310A1 Composition and method for recovering hydrocarbon fluids from a subterranean reservoir |
| 03/12/2003 | CN1402698A Use of metathesis products of Fischer-Tropsch process products |
| 03/12/2003 | CN1102953C Chemically induced stimulations of subterranean carbonaceous formations with aqueous oxidizing solutions |
| 03/11/2003 | US6531427 Preflushing with hydroxycarboxylic acid solution; contacting with hydrogen fluoride |
| 03/11/2003 | CA2058856C Drilling fluid |
| 03/06/2003 | WO2003018709A1 Electrically conductive oil-based mud |
| 03/06/2003 | WO2003018708A2 Alkali metal tungstate compositions and uses thereof |
| 03/06/2003 | WO2003018508A1 Aqueous fluorochemical polymer composition for water and oil repellent treatment of masonry and wellbores |
| 03/06/2003 | US20030045605 Ester/monoester copolymer compositions and methods of preparing and using same |
| 03/06/2003 | US20030045434 Oil based compositions and method for temporarily sealing subterranean zones |
| 03/06/2003 | US20030041778 Sodium or potassium ferrocyanide and mixtures thereof, and a phosphonic acid compound or salt thereof such as Dequest" 2066A; mud additive |
| 03/06/2003 | CA2459494A1 Aqueous fluorochemical polymer composition for water and oil repellent treatment of masonry and wellbores |
| 03/06/2003 | CA2456351A1 Electrically conductive oil-based mud |
| 03/05/2003 | EP1288274A1 Foamable drilling fluid |
| 03/05/2003 | EP1287226A1 Microcapsule well treatment |
| 03/04/2003 | US6528157 Proppants with fiber reinforced resin coatings |
| 03/04/2003 | US6527051 Encapsulated chemicals for use in controlled time release applications and methods |
| 02/28/2003 | CA2393977A1 Drilling fluid, apparatus, and method |
| 02/27/2003 | WO2003016432A1 Method and composition to decrease iron sulfide deposits in pipe lines |
| 02/27/2003 | WO2003016426A1 Thermally stable, substantially water-free well fluid |
| 02/27/2003 | WO2003016425A1 Blends of esters with isomerized olefins and other hydrocarbons as base oils for invert emulsion oil muds |
| 02/27/2003 | WO2003015523A2 Methods for dewatering shaly subterranean formations |
| 02/27/2003 | WO2002042392A3 Environmentally acceptable fluid polymer suspension for oil field services |
| 02/27/2003 | US20030040546 Viscoelastic surfactant fluids and related methods of use |
| 02/27/2003 | US20030040441 Methods for dewatering shaly subterranean formations |
| 02/27/2003 | CA2456208A1 Blends of esters with isomerized olefins and other hydrocarbons as base oils for invert emulsion oil muds |
| 02/26/2003 | EP1285147A1 Method of oil/gas well stimulation |
| 02/25/2003 | US6525116 Butadiene-styrene copolymer; lightweight, high strength |
| 02/25/2003 | US6525011 Methods and acidizing compositions for reducing metal surface corrosion and sulfide precipitation |
| 02/25/2003 | US6524384 Used for use in cementing wells |
| 02/25/2003 | CA2081270C Thin gels containing polyacrylamides and glyoxal for use in water permeability selective reduction |
| 02/25/2003 | CA2050935C Use of selected ethers of monofunctional alcohols in drilling fluids |
| 02/20/2003 | WO2003014520A1 Shear-sensitive plugging fluid for plugging and a method for plugging a subterranean formation zone |
| 02/20/2003 | WO2003014253A1 Biodegradable surfactant for invert emulsion drilling fluid |
| 02/20/2003 | WO2003014252A1 Process fluid |
| 02/20/2003 | US20030036484 Fluids are able to meet environmental regulations while maintaining acceptable oil mud rheology and overall oil mud performance. |
| 02/19/2003 | EP1098950B1 Method for using biodegradable drilling fluids |
| 02/13/2003 | WO2003012253A2 Method of controlling asphaltene precipitation in a fluid |
| 02/13/2003 | WO2003012004A1 Hydrophobe associative polymers and compositions and methods employing them |
| 02/13/2003 | WO2003012003A1 High density thermally stable well fluids |
| 02/13/2003 | WO2003011751A1 Method for decomposing hydrogen peroxide under pressure and device for heating an equipment |
| 02/13/2003 | US20030032683 Ionic/nonionic surfactants for preventing or resolving oil-in-water emulsions formed in brines used as completion fluids |
| 02/13/2003 | US20030032562 Compositions for controlled release |
| 02/13/2003 | US20030032561 Comprising: water; and a salt, a formate salt, wherein a weight-to- volume ratio of the salt in the well fluid is within a range of greater than 120% to about 400%. |
| 02/13/2003 | US20030031788 Water-based system for altering wettability of porous media |
| 02/13/2003 | US20030029616 For sealing a lost circulation zone in a wellbore |
| 02/13/2003 | US20030029615 For sealing a lost circulation zone in a wellbore |
| 02/13/2003 | CA2455901A1 Hydrophobe associative polymers and compositions and methods employing them |
| 02/12/2003 | EP1282675A1 Biodegradable lubricating composition and uses thereof, in particular in a bore fluid |
| 02/12/2003 | EP1282674A1 Drilling fluids and method of drilling |
| 02/12/2003 | CN1396189A Aldehyde modified polymer and its preparation method and usage |
| 02/11/2003 | US6519501 Method of determining optimum exposure threshold for a given photolithographic model |
| 02/11/2003 | US6518224 Drilling fluids |
| 02/11/2003 | US6518223 Drilling fluid, apparatus, and method |
| 02/11/2003 | US6516885 Reducing water flow |
| 02/11/2003 | US6516884 Stable well cementing methods and compositions |
| 02/11/2003 | US6516883 Using low density cement having enhanced compressive, tensile and bond strengths on setting comprised of hydraulic cement, sufficient water to form slurry and hollow glass microspheres surface treated with mixture of organosilane coupling agents |
| 02/08/2003 | CA2354906A1 Production optimization using dynamic surface tension reducers |
| 02/07/2003 | CA2397043A1 Compositions for controlled release |
| 02/06/2003 | US20030024703 Method and composition for cleaning and inhibiting solid, bitumin tar, and viscous fluid accretion in and on well equipment |
| 02/06/2003 | US20030024699 In situ production of synthesis gas from a coal formation, the synthesis gas having a selected H2 to CO ratio |
| 02/05/2003 | EP1280975A1 Invert well service fluid and method |
| 02/04/2003 | US6514916 Process for making sulfonated uintaite and well fluid additives including sulfonated uintaite |
| 02/04/2003 | US6514915 Synthetic base fluid for enhancing the results of crude oil characterization analyses |
| 01/30/2003 | WO2003008759A1 Buffered well fluids |
| 01/30/2003 | WO2003008758A1 Method and composition for cleaning and inhibiting solid, bitumin tar, and viscous fluid accretion in and on well equipment |
| 01/30/2003 | WO2003008757A1 Additives for inhibiting the formation of gas hydrates |
| 01/30/2003 | WO2003008668A1 Corrosion inhibitors with improved water solubility and improved film persistence |
| 01/30/2003 | WO2002055831A3 Improved method for stimulation of liquid flow in a well |
| 01/30/2003 | US20030022987 For use in hair, skin and nail conditioning; papermaking; subterranean well drilling and well cementing operations |
| 01/30/2003 | US20030022796 Using polyols together with an enzyme for breaking the viscosity of aqueous treatment fluids gelled with borate crosslinked polymers used in hydrocarbon recovery operations |
| 01/30/2003 | US20030020047 Method of increasing pH of high-density brines |
| 01/30/2003 | US20030019640 Compositions including a recycled paper by-product and method for using the compositions |
| 01/30/2003 | US20030019627 Compositions containing aqueous viscosifying surfactants and methods for applying such compositions in subterranean formations |
| 01/30/2003 | US20030019626 In situ thermal processing of a coal formation with a selected hydrogen content and/or selected H/C ratio |
| 01/30/2003 | CA2453521A1 Additives for inhibiting the formation of gas hydrates |
| 01/29/2003 | EP1278939A2 Well treatment fluids comprising chelating agents |
| 01/29/2003 | EP1278937A1 Scale removal |
| 01/28/2003 | US6511944 Methods and compositions for treating subterranean formations with gelled hydrocarbon fluids |
| 01/28/2003 | US6511613 Corrosion inhibitor |