C09K 8 - Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations

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)
01/1995
01/03/1995	US5377760 Fiber reinforced gel for use in subterranean treatment processes
01/03/1995	US5377759 Forming a barriers around a well
01/03/1995	US5377758 Method for effective placement of a long life scale inhibitor
01/03/1995	US5377757 Low temperature epoxy system for through tubing squeeze in profile modification, remedial cementing, and casing repair
01/03/1995	CA2126938A1 Drilling fluid additive and method for inhibiting hydration
01/03/1995	CA2107487A1 Cement set retarding additives, compositions and methods
01/03/1995	CA2025541C Non-aqueous viscosified carbon dioxide and method of use
01/02/1995	CA2125452A1 Anionic sulfonated thickening composition
12/1994
12/28/1994	EP0541606B1 Use of Surface-Active Alkyglycoside Compounds in Oil-Based Bore-Flushing Agents and other Borehole-Treatment Fluids
12/28/1994	EP0472557B1 Use of selected oleophilic ethers in water-based drilling fluids of the o/w emulsion type and corresponding drilling fluids with improved ecological acceptability
12/27/1994	US5376629 A hydrophobic coated clay selected from the group of barite, ilmenite, haematite, siderite, calcium magnisium carbonate and carbonate; enhanced oil recovery, free of emulsifiers
12/27/1994	US5375660 Dissolving minerals by treating with fluoride containing compound in presence of organic acid
12/22/1994	WO1994029566A1 Non-cryogenic production of nitrogen for on-site injection in downhole drilling
12/22/1994	WO1994029222A3 Fluid chlorination, for example, employed in a water injection system
12/22/1994	WO1994029222A2 Fluid chlorination, for example, employed in a water injection system
12/22/1994	CA2149244A1 Non-cryogenic production of nitrogen for on-site injection in downhole drilling
12/21/1994	EP0629649A1 Rheofluidifying polymers, their synthesis and their applications particularly in the oil industry
12/20/1994	US5374361 Well cleanout using caustic alkyl polyglycoside compositions
12/20/1994	US5373901 Encapsulated breakers and method for use in treating subterranean formations
12/14/1994	EP0628576A2 A fluid loss agent comprising polymers or copolymers of amido-sulfonic acid containing monomers or salts thereof
12/14/1994	EP0628130A1 Enzyme breaker for galactomannan based fracturing fluid
12/14/1994	EP0628129A1 Novel enzyme complex for breaking blocking gels
12/13/1994	US5373086 Inhibits precipitation of calcium carbonate and/or calcium phosphate and scale formation in cooling and boiler water treatment, reverse osmosis, flash evaporators, oil field recovery operation, plaque and tartar control and desalting
12/13/1994	US5372732 Fracturing fluid prepared on-site by dissolving borate-crosslinked polysaccharide granules into an aqueous polysaccharide gel
12/13/1994	US5372641 Microfine andf conventional slag cement forming a cementitious oil-containing slurry; controlling lost circulation
12/13/1994	US5372462 Placing foam comprising uncrosslinked polymer, surfactant, aqueous solvent, gas in soil treatment region
12/13/1994	US5372194 Method of and means for operating geothermal wells
12/12/1994	CA2098221A1 Stable nonagglomerating aqueous suspensions of oil soluble polymeris friction reducers
12/08/1994	WO1994028087A1 Invert drilling fluids
12/08/1994	WO1994028086A1 White mineral oil-based drilling fluid
12/08/1994	WO1994028085A1 Plugging liquid for plugging a subterranean formation zone
12/07/1994	EP0627481A1 Invert drilling fluids
12/07/1994	EP0627480A1 Organoclay thickener compatible with system to be thickened
12/07/1994	EP0627450A1 Copolymers containing carboxyl groups in the form of aqueous dispersions or in the form of redispersible powders and their water-soluble salts, process for their preparation and their use as thickewer in aqueous compositions
12/07/1994	EP0495786B1 Universal lubricant based on a solution of synthetic oil
12/06/1994	US5371244 Controlling process conditions to avoid substantial undesirable degeneration
12/06/1994	US5370799 Elevated temperature-pressure flow simulator
12/06/1994	US5370188 Borehole assembly, method and composition therefor
12/06/1994	US5370185 Mud solidification with slurry of portland cement in oil
12/06/1994	US5370184 Method of treating formations
12/06/1994	US5370181 Anti gas-migration cementing
12/06/1994	CA2016110C Non-damaging workover and completion fluid
11/1994
11/30/1994	EP0626418A1 Stable nonagglometrating aqueous suspensions of oil soluble polymeric friction reducers
11/30/1994	EP0626348A1 Method of decontaminating earth and/or natural gas processing equipment
11/30/1994	EP0626002A1 High density aqueous compositions.
11/29/1994	US5368843 Thickening system
11/29/1994	US5368642 Modified polyallyl or polyvinyl amine
11/29/1994	US5368102 Consolidatable particulate material and well treatment method
11/29/1994	US5368101 Using brines for displacement of hydrocarbons
11/29/1994	US5368099 Injection of dextrins for subterranean microbial processes
11/24/1994	WO1994027025A1 Cementing composition and method using phosphonated polymers to improve cement slurry properties
11/24/1994	WO1994026886A2 Process for the preparation of immunogens or diagnostic reagents, and immunogens or diagnostic reagents thereby obtainable
11/23/1994	EP0625563A1 Polyglycerol esters as functional fluids and functional fluid modifiers
11/23/1994	EP0625512A1 N-Alkyl-N'-poly(oxyalkyl)hexahydropyrimidine
11/22/1994	US5366643 Method and composition for acidizing subterranean formations
11/22/1994	US5366016 Use of variable density carrier fluids to improve the efficiency of scale dissolution
11/17/1994	EP0624710A1 A foamable oil well-treatment-fluid
11/17/1994	DE4338870C1 Polymer flooding process for the recovery of oil from underground deposits
11/15/1994	US5364960 Process for preparing sulfonated paraffins with a larger content of polysulfonated species
11/15/1994	US5363928 Method of drilling with fluid including bees wings and fluid loss additive therefor
11/15/1994	US5363918 Combining drilling fluid consists of metal oxide and water with polymerizable monomer in presence of peroxide to form cementitious slurry to cement the well
11/15/1994	US5363916 Using gel of polymer of hydroxyalkyl cellulose prepared by a redox reaction with vinyl phosphonic acid
11/15/1994	US5363915 Enhanced oil recovery technique employing nonionic surfactants
11/15/1994	US5363914 Injection procedure for gas mobility control agents
11/15/1994	US5363913 Injection of sequestering agents for subterranean microbial processes
11/15/1994	CA1333109C Method and composition for thickening or stabilizing electrolyte containing aqueous media with polyamphoteric polysaccharides
11/10/1994	WO1994025731A1 Acidising underground reservoirs
11/10/1994	WO1994025730A1 Stimulation of coalbed methane production
11/10/1994	WO1994025728A1 Method for placement of a scale inhibitor in a formation
11/10/1994	WO1994025727A1 Hydrate inhibition
11/10/1994	WO1994025576A1 An enzyme exhibiting mannanase activity
11/10/1994	CA2162024A1 Stimulation of coalbed methane production
11/09/1994	EP0623663A1 Aqueous drilling muds fluidified by means of zirconium and aluminium complexes
11/08/1994	US5362713 Forming by dispersing water-insoluble reticulated bacterial cellulose in aqueous transport medium to make mud having plastic viscosity of at least 5 cp; adding drill solids, bentonite and/or soda ash
11/08/1994	US5362415 Acrylic copolymer which is water-soluble or moderately water-soluble and may be crosslinked; and its use
11/08/1994	US5362408 Gelled oilfield fluid composition suitable as high temperature fracturing fluid comprising water, soluble or dispersible polymer as water thickener, crosslinker, oxime gel stabilizer
11/08/1994	US5362312 Carrier fluid for the suspension and delivery of water soluble polymers
11/08/1994	US5361842 Drilling and cementing with blast furnace slag/silicate fluid
11/08/1994	US5361841 Drilling and cementing with blast furnace slag/polyalcohol fluid
11/08/1994	CA2122808A1 Organoclay thickener compatible with system to be thickened
11/08/1994	CA1332937C Chrome humates as drilling mud additives
11/06/1994	CA2122695A1 Foamable oil well-treatment-fluid
11/02/1994	CN1094418A Water dispersible thickeners comprising hydrophilic polymers coated with particulate fatty acids or the salts thereof
11/01/1994	US5360787 Dispersant compositions comprising sulfonated isobutylene maleic anhydride copolymer for subterranean well drilling and completion
11/01/1994	US5360560 Universal lubricant based on a synthetic oil solution
11/01/1994	US5360558 Slurried polymer foam system and method for the use thereof
11/01/1994	US5360074 Method and composition for preserving core sample integrity using an encapsulating material
11/01/1994	US5360065 Contacting aqueous fluid in subterranean formation with copolymer of sodium vinyl sulfonate and polyalkylene glycol mono- or di-methacrylate
11/01/1994	US5360064 Injecting carbon-free nutrient solution containing organic phosphate followed by phosphorus-free nutrient solution containing carbon nutrient; enhanced oil recovery
11/01/1994	CA2017517C Surfactant-stabilized foams
11/01/1994	CA1332785C Oil recovery
10/1994
10/27/1994	WO1994024413A1 Method for inhibiting solids formation and blends for use therein
10/27/1994	WO1994024224A1 Removing fines from a spent aqueous well treating fluid
10/26/1994	EP0621396A2 Method and composition for preserving core sample integrity using an encapsulating material
10/26/1994	EP0621330A1 Fluids for oilfield industry their preparation and their use in drilling, completion and well treatment operations, and in fracturing and matrix treatment operation
10/26/1994	EP0621329A1 Removing fines from a spent aqueous drilling fluid
10/26/1994	EP0621247A2 Oil-wells cement slurries, their preparation and their use in well cementing operation
10/25/1994	US5358565 Steam injection profile control agent and process
10/25/1994	US5358564 In situ reaction product of alkali/ammonium and organoammonium silicate and polyalkylsilicate; used to close higher permeability zone to fluid flow
10/25/1994	US5358563 In-situ silica cementation for profile control during steam injection

1 ... 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 ... 318