| 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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| 08/12/1998 | CN1190385A Method for inhibiting hydrate formation |
| 08/11/1998 | US5792727 Spherical particles of ceramic material dispersed in supporting vehicle |
| 08/11/1998 | US5792420 Metal corrosion inhibitor for use in aqueous acid solutions |
| 08/11/1998 | US5791415 Injecting hardenable resin into portion of formation, creating fracture, depoisting hardenable resin coated proppant in fracture and hardening; prevents migration of formation sand with fluids |
| 08/11/1998 | CA2013469C Gellable buffered aqueous composition and its use in enhanced petroleum recovery |
| 08/11/1998 | CA2013468C Method and composition for reducing the permeability of a high-permeability zone in an oil reservoir |
| 08/11/1998 | CA2013467C Gellable aqueous composition and its use in enhanced petroleum recovery |
| 08/11/1998 | CA2013461C Gellable aqueous composition and its use in enhanced petroleum recovery |
| 08/11/1998 | CA1339989C Process for the dissolving of sulfur |
| 08/06/1998 | WO1998033953A1 Corrosion inhibition through the use of a quaternary pyridine salt-hydrocarbon combination |
| 08/06/1998 | WO1998033846A1 Ester polymer dispersion |
| 08/04/1998 | US5789635 With polymer |
| 08/04/1998 | US5789352 Water, magnesium silicate clay, silica, organic polymer |
| 08/04/1998 | US5789351 Compositions useful for treating oil-bearing formation |
| 08/04/1998 | US5789350 Compositions and processes for treating hydrocarbon-bearing formations |
| 08/04/1998 | US5789349 Water-based drilling fluids with high temperature fluid loss control additive |
| 08/04/1998 | US5788781 Contacting with mixture of surfactants having specified hydrophilic-lipophilic balance in nonpolar diluent oil, rinsing with water |
| 08/04/1998 | US5787986 Control of particulate flowback in subterranean wells |
| 08/04/1998 | CA2124825C Fiber reinforced gel for use in subterranean treatment processes |
| 08/03/1998 | CA2196650A1 Corrosion inhibition through the use of a quaternary pyridine salt-hydrocarbon combination |
| 07/29/1998 | EP0855493A1 Process for moving heavy crude oils with water having a high content of salts |
| 07/29/1998 | EP0854897A1 Improved oil-based drilling fluid |
| 07/28/1998 | US5785895 Biodegradable corrosion inhibitors of low toxicity |
| 07/28/1998 | US5785747 Viscosification of high density brines |
| 07/23/1998 | WO1998031917A1 On-line, thermo-chemical process for the dewaxing of oil export pipelines |
| 07/22/1998 | EP0853651A1 Cleaning compositions for oil and gas wells, lines, casings, formations and equipment and methods of use |
| 07/21/1998 | US5783822 Traceable well cement compositions and methods |
| 07/21/1998 | US5783527 Well drilling and servicing fluids which deposit an easily removable filter cake |
| 07/21/1998 | US5783526 Process to enhance removal of adhering solids from the surface of wellbores and sand control devices therein |
| 07/21/1998 | US5783525 Heat resistance; mixture of nonionic surfactant and anionicsurfactant |
| 07/21/1998 | US5783524 Use of glycine-N,N-diacetic acid derivatives as complexing agents for alkaline earth metal and heavy metal ions in the production and transport of petroleum and natural gas |
| 07/21/1998 | US5782300 Suspension and porous pack for reduction of particles in subterranean well fluids, and method for treating an underground formation |
| 07/16/1998 | WO1998030784A1 Method of controlling asphaltene precipitation in a fluid |
| 07/16/1998 | WO1998030783A1 A process and a formulation to inhibit scale in oil field production |
| 07/15/1998 | EP0853186A2 Treatment of subterranean formation to control particulate flowback |
| 07/15/1998 | EP0736130B1 A method for inhibiting the plugging of conduits by gas hydrates |
| 07/14/1998 | US5780407 Includes a surfactant and a diluent oil; useful in cleaning oil-contaminated substrates |
| 07/14/1998 | US5780395 Acrylamide polymer, chromium-containing crosslinking agent, surfactant, liquid solvent, and gas; enhanced oil recovery |
| 07/14/1998 | US5779787 Well cement compositions containing rubber particles and methods of cementing subterranean zones |
| 07/14/1998 | CA2145627C Polymer enhanced foams for reducing gas coning |
| 07/08/1998 | EP0852235A2 High temperature stable modified starch polymers and well drilling fluids employing same |
| 07/08/1998 | EP0800613A4 Acid treatment method for siliceous formations |
| 07/08/1998 | CN1187182A Method for inhibiting hydrate formation |
| 07/08/1998 | CN1187181A Method for inhibiting hydrate formation |
| 07/07/1998 | US5776865 Drilling fluids |
| 07/07/1998 | US5775425 Control of fine particulate flowback in subterranean wells |
| 07/07/1998 | CA2068765C Method for the control of biofouling |
| 07/01/1998 | EP0850287A1 Glycol based drilling fluid |
| 07/01/1998 | CN1186480A Production of cesium compounds |
| 06/30/1998 | US5773638 Reaction of aldehyde or dialdehyde with zirconium carbonate for organozirconium compound and carbon dioxide |
| 06/30/1998 | US5773546 Process for polymerization of water-soluable and water-insoluable carboxylic acid polymers and copolymers in a silicone oil solvent |
| 06/30/1998 | US5773390 Chemical additive for removing solids from a well drilling system |
| 06/30/1998 | US5771971 Using an organic amine |
| 06/30/1998 | CA2132664C Process for chemically treating reservoir pyrobitumen to improve permeability |
| 06/30/1998 | CA2107550C Gelling compositions useful for oil field applications |
| 06/25/1998 | WO1998027315A1 Method for stabilizing the gas flow in water-bearing natural gas deposits or reservoirs |
| 06/25/1998 | WO1998027314A1 Method for drying out rock containing immobile formation water within the encroachment area of natural gas deposits and gas reservoirs |
| 06/25/1998 | WO1998026864A1 Water based foaming composition - method for making same |
| 06/25/1998 | DE19653140A1 Verfahren zur Austrocknung von immobiles Formationswasser enthaltendem Gestein im Einzugsradius von Erdgas- und Gasspeicherbohrungen Method for drying of immobile formation water containing rocks in the catchment radius of gas and gas storage wells |
| 06/25/1998 | DE19653136A1 Verfahren zur Stabilisierung des Gasflusses in wasserführenden Erdgaslagerstätten und Erdgasspeichern A method for stabilizing the gas flow in water-bearing deposits of natural gas and natural gas storage |
| 06/23/1998 | CA2094088C Gas well treatment compositions and methods |
| 06/20/1998 | CA2218205A1 Well drilling and servicing fluids and methods of reducing fluid loss and polymer concentration thereof |
| 06/18/1998 | WO1998002415A3 Method for inhibiting corrosion and process for preparing 1-amidoalkylimidazoles |
| 06/17/1998 | CN1185191A Method for inhibiting the plugging of conduits by gas hydrates |
| 06/16/1998 | US5766612 Use of endgroup-capped fatty amide alkoxylates |
| 06/10/1998 | EP0846842A1 Hydrocolloids and hydrocolloid mixtures as additives for underground construction eg tunnels construction |
| 06/10/1998 | EP0846747A1 Process for preparation and use of gels as additives for mechanical shield driving |
| 06/10/1998 | EP0846193A1 Corrosion inhibition by ethoxylated fatty amine salts of maleated unsaturated acids |
| 06/10/1998 | EP0731776B1 Oil-in-water emulsions as microbicide (biocide) substitutes in water carrying systems |
| 06/09/1998 | US5763683 2-methylbutoxy ethoxyethanol |
| 06/09/1998 | US5763368 Corrosion inhibited well acidizing compositions and methods |
| 06/09/1998 | US5763367 Drilling fluid additive comprising comminuted pith or chaff from corn cobs, comminuted rice fraction and ground wood fiber, ground nut shells, ground paper and/or shredded cellophane |
| 06/09/1998 | US5762141 Ultra-high temperature stable gels |
| 06/09/1998 | US5762140 High viscosity low friction pressure loss well treating fluids and methods |
| 06/09/1998 | US5762138 Method of preventing incompatibility between aqueous well treating fluids and hydrocarbons |
| 06/04/1998 | WO1998023843A1 Additives for inhibiting formation of gas hydrates |
| 06/04/1998 | WO1998023792A1 Method for protecting metal surfaces against corrosion in liquid or gaseous media |
| 06/04/1998 | WO1998023704A1 Well fluid additive |
| 06/04/1998 | DE19649285A1 Verfahren zum Schutz von Metalloberflächen gegenüber Korrosion in flüssigen oder gasförmigen Medien A method for protecting metal surfaces against corrosion in liquid or gaseous media, |
| 06/04/1998 | CA2273268A1 Method for protecting metal surfaces against corrosion in liquid or gaseous media |
| 06/03/1998 | EP0845520A1 Stabilized fluids containing soluble zinc |
| 06/02/1998 | US5759964 High viscosity well treating fluids, additives and methods |
| 06/02/1998 | US5759963 Use of acetals |
| 06/02/1998 | US5759962 Method for inhibiting reactive argillaceous formations and use thereof in a drilling fluid |
| 06/02/1998 | US5759485 Amine salts |
| 06/02/1998 | US5758727 Enhanced petroleum fluid recovery method in an underground reservoir |
| 06/02/1998 | US5758725 Method and device for enhancing oil and gas flow in a well |
| 05/28/1998 | WO1998022557A1 Additives to inhibit the formation of gas hydrate |
| 05/28/1998 | WO1998022552A1 Multiphase lubricant concentrates for use in water based systems in the field of exploratory soil drilling |
| 05/28/1998 | WO1998022551A1 Use of selected fatty alcohols and their mixtures with carboxylic acid esters as lubricant components in water-based drilling fluid systems for soil exploration |
| 05/28/1998 | DE19725509A1 Use of polymers containing maleic acid anhydride |
| 05/28/1998 | CA2271733A1 Multiphase lubricant concentrates for use in water based systems in the field of exploratory soil drilling |
| 05/27/1998 | CN1182824A Method for consolidation of sand |
| 05/26/1998 | US5756594 Catalytic polymerization of aldehyde carboxylate monomer to form polyacetal and crosslinking with polyvinyl ethers, diesters, diepoxides, anhydrides, dinitriles and diacyl compounds |
| 05/26/1998 | US5756004 Quaternary ammonium compounds useful for inhibiting metal corrosion |
| 05/26/1998 | US5755972 Method for metal sulfate scale control in harsh oilfield conditions |
| 05/26/1998 | US5755295 Modular drilling fluid system and method |
| 05/22/1998 | WO1998021446A1 Inhibitors and their uses in oils |
| 05/22/1998 | WO1998021291A1 Clear brine drill-in fluid |
| 05/22/1998 | WO1998021290A1 Drilling, completion, and workover fluid comprising ground peanut hulls |