Patents
Sitemap › C09 - Dyes; Paints; Polishes; Natural resins; Adhesives; Compositions not otherwise provided for; Applications of materials not otherwise provided for › C09K - Materials for applications not otherwise provided for; Applications of materials not otherwise provided for › 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)
05/1998
05/22/1998WO1998016718A3 Use of alkanesulphonic acids as asphaltene dispersants
05/20/1998DE19647598A1 Verwendung ausgewählter Fettalkohole und ihrer Abmischungen mit Carbonsäureestern als Schmiermittelkomponente in wasserbasierten Bohrspülsystem zum Erdreichaufschluß Use of selected fatty alcohols and their blends with carboxylic acid esters as lubricant component in water-based Bohrspülsystem for geological exploration
05/20/1998DE19647585A1 Additive zur Inhibierung der Gashydratbildung Additive for inhibiting gas hydrate formation
05/20/1998DE19647565A1 Mehrphasige Schmiermittelkonzentrate für den Einsatz in wasserbasierten Systemen aus dem Bereich der Erdreicherbohrung A multiphase lubricant concentrates for use in water-based systems in the field of Erdreicherbohrung
05/19/1998US5753596 With additive of thiophosphate or pyrophosphate containing both oxygen and sulfur atoms in mixture with other corrosion inhibitors
05/14/1998WO1998020234A1 Method of remediation of contaminants in porous media through minimization of buoyancy effects
05/14/1998WO1998020230A1 Method for improved stimulation treatment
05/14/1998WO1998020088A1 Preparation of hydrocarbon gels from ferric sources, polycarboxylic acid compounds, and optional amines, in combination with phosphate esters
05/14/1998WO1998019980A1 A method for preventing or retarding the formation of gas hydrates
05/14/1998WO1998019976A1 A cement slurry and a method for the production of such a cement slurry, as well as a use for a light weight filling material as an additive in a cement slurry
05/14/1998CA2270920A1 Method of remediation of contaminants in porous media through minimization of buoyancy effects
05/13/1998EP0840769A1 Non-toxic, inexpensive synthetic drilling fluid
05/12/1998US5749418 Mixing hydraulic cement, water, iron chloride to form pumpable slurry, pumping into well bore, allowing to solidify
05/07/1998WO1998019043A1 Use of biodegradable alcoxylation products for cleaning boreholes, boring instruments or borings
05/07/1998WO1998018882A1 Process for the facilitated waste disposal of working substances based on water-in-oil invert emulsions
05/07/1998WO1998018881A1 Enhanced multicomponent mixtures for soil decomposition
05/07/1998DE19643857A1 Verwendung biologisch abbaubarer Alkoxylierungsprodukte zum Reinigen von Bohrlöchern, Bohrgeräten oder Bohrklein The use of biodegradable alkoxylation products for cleaning boreholes, drilling equipment or drill cuttings
05/07/1998DE19643840A1 Verbesserte Mehrkomponentengemische für den Erdreichaufschluß Improved multi-component mixtures for geological exploration
05/07/1998CA2271040A1 A process for the simplified disposal of working fluids based on w/o invert emulsions
05/07/1998CA2270716A1 Improved multicomponent mixtures for use in geological exploration
05/06/1998EP0839932A1 Propargyl alcohol, its homologs and oxyethylated derivative as carbon dioxide corrosion inhibitors for iron
05/06/1998EP0699269A4 Method for placement of a scale inhibitor in a formation
05/05/1998US5747619 Water-soluble, carboxyl-containing copolymers, the preparation thereof and the use thereof as scale inhibitor
05/05/1998US5746923 Antideposit agents for pumping systems and feeding chlorinated water with surfactants
05/05/1998CA2088291C Process for decomposing polysaccharides in alkaline aqueous systems
04/1998
04/29/1998EP0838518A2 Detergent mixtures
04/29/1998EP0838514A1 Drilling fluid additive and method for inhibiting hydration
04/29/1998EP0708746B1 Graft polymers of keto-aldehyde condensation or co-condensation products
04/29/1998EP0618995B1 Use of selected inhibitors against the formation of solid organic-based incrustations from fluid hydrocarbon mixtures
04/28/1998US5744665 Clathrate formation prevention in oil and gas pipelines
04/28/1998US5744428 Controlling permeability of walls when drilling through geological formations
04/28/1998CA2135226C Process for treating oil-bearing formation
04/23/1998WO1998016719A1 Method of preventing gas hydrates
04/23/1998WO1998016718A2 Use of alkanesulphonic acids as asphaltene dispersants
04/23/1998WO1998016595A1 Use of sarcosinates as asphaltene dispersants
04/23/1998WO1998016592A1 Corrosion inhibitor for wellbore applications
04/23/1998DE19642656A1 Verfahren zur Verhinderung von Gashydraten A method of preventing gas hydrates
04/23/1998CA2268821A1 Use of alkanesulphonic acids as asphaltene dispersants
04/22/1998EP0836669A1 Use of a high purity imidazoline based amphoacetate surfactant as foaming agent in oil wells
04/22/1998EP0724564B1 Use of terminal group capped fatty acid amide alkoxylates
04/21/1998US5741761 Polymer-surfactant fluids for decontamination of earth formations (LAW181)
04/21/1998US5741759 Skeletally isomerized linear olefins
04/21/1998US5741758 Method for controlling gas hydrates in fluid mixtures
04/16/1998DE19642494A1 Verwendung von Sarkosinaten als Asphalten-Dispergatoren Use of a sarcosinate as asphaltene dispersants
04/16/1998DE19642493A1 Verwendung von Alkansulfonsäuren als Asphalten-Dispergatoren Use of alkane sulfonic acids as asphaltene dispersants
04/15/1998EP0835983A2 Methods of fracturing subterranean formations
04/15/1998EP0835296A1 Drilling compositions and methods
04/15/1998EP0686138B1 2-methylbutoxy ethoxyethanol
04/15/1998CN1179196A Oil and gas field chemicals
04/14/1998US5739212 Polyoxyalkylene oxide graft polymers with unsaturated acids or anhydrides; dispersants for inorganic binders
04/14/1998US5739190 Process for the preparation of stable water-in-oil emulsions of hydrolyzed polymers of N-vinyl amides and the use thereof
04/14/1998CA2102769C Encapsulated acid composition and process for preparing and using same
04/09/1998WO1998014690A2 Setting composition for well operations
04/09/1998WO1998014687A1 Novel method of drilling well bores
04/08/1998EP0834644A2 Treating subterranean formation to control particulate flowback
04/08/1998EP0834543A1 Lubricant compositions
04/08/1998EP0834541A1 Method of decomposing gas hydrates
04/08/1998EP0833802A1 Slag cement and process using hydrophobically modified galactomannans as filtrate reductants
04/08/1998EP0715635B1 Water-soluble copolymerizates containing carboxyl groups, methods of producing said copolymerizates, and use thereof as scale inhibitors
04/07/1998US5736594 For well bores
04/07/1998US5735349 Compositions and methods for modifying the permeability of subterranean formations
04/07/1998CA2030694C Functional fluids
04/02/1998WO1998013577A1 Permeability reduction in a hydrocarbon-bearing formation using a stabilized polymer gel
04/02/1998CA2251035A1 Permeability reduction in a hydrocarbon-bearing formation using a stabilized polymer gel
04/01/1998EP0832861A1 Cementing slurry and method of designing a formulation
04/01/1998EP0832049A1 Curable gypsum-containing composition and method for stabilization of unconsolidated core
03/1998
03/30/1998CA2216750A1 Cementing slurry and method of designing a formulation
03/26/1998WO1998012416A1 Control of proppant flowback in hydraulically fractured wells
03/26/1998WO1998012415A1 Blocking composition for use in subterranean formation
03/26/1998CA2266662A1 Blocking composition for use in subterranean formation
03/25/1998EP0830328A1 Stable suspension of hydrocolloids and superplasticizer
03/25/1998EP0830327A1 Stable suspension of hydrocolloids
03/19/1998WO1998011277A1 Corrosion inhibitor
03/19/1998DE19637160A1 Synergistic corrosion inhibitor composition
03/18/1998EP0829616A1 Process for the consolidation of sand
03/18/1998EP0828778A1 Clathrate hydrate inhibitor and method of inhibiting the formation of clathrate hydrates using it
03/18/1998EP0668958B1 Method for controlling clathrate hydrates in fluid systems
03/17/1998US5728658 Biodegradable synthetic ester base stocks formed from branched oxo acids
03/17/1998US5728654 Dissolved in brines, water soluble salts, viscosifiers, fluid loss control additive and zinc carbonate; drilling fluids for oil/gas wells
03/17/1998US5728653 Placing argillaceous rocks in contact with an aqueous solution containing a polymer with hydrophilic and hydrophobic groups so that the polymer is adsorbed by the rocks
03/17/1998US5728652 Brine fluids having improved rheological charactersitics
03/17/1998US5728210 Composition and method to control cement slurry loss and viscosity
03/11/1998CN1175591A Method of producing hydrosolubles polymers, polymers thus obtained and uses of same
03/10/1998US5726341 Hydrolysis, desalting
03/05/1998WO1998009056A1 Aqueous external crystal modifier dispersion
03/05/1998WO1998008914A1 Well servicing fluids
03/04/1998EP0826865A1 Unconsolidated formation stimulation and sand migration prevention methods
03/04/1998EP0826750A1 Pumpable organophilic clay/polyamide compositions useful as rheological additives
03/04/1998EP0696335B1 Acidising underground reservoirs
03/04/1998CN1174817A Method for metal sulfate scale control in Harsh oilfield conditions
03/03/1998US5723524 Method for preventing or retarding the formation of gas hydrates
03/03/1998US5723423 Solvent soaps and methods employing same
03/03/1998US5723416 Well servicing fluid for trenchless directional drilling
02/1998
02/25/1998EP0824632A1 Carboxyalkyl substituted polygalactomannan fracturing fluids
02/25/1998EP0824631A1 Method for inhibiting the plugging of conduits by gas hydrates
02/24/1998US5721198 Containing crystalline mixed metal hydroxide uniformly distributed in fluid system
02/24/1998US5720350 Method for recovering oil from a gravity drainage formation
02/24/1998US5720347 Flow control agent for controlling filtrate permeability through walls; enhanced oil recovery
02/19/1998WO1998006929A2 Compositions and methods for modifying the permeability of subterranean formations
02/19/1998WO1998006792A1 Composition and method for viscosifying brines
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