| 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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| 04/03/1996 | EP0704410A2 Cementitious compositions for downhole use |
| 04/03/1996 | EP0690899A4 Non toxic, biodegradable well fluids |
| 04/02/1996 | US5504063 Asphaltene removal composition and method |
| 04/02/1996 | US5504062 Injecting aqueous mixture containing calcium carbonate having graded particle sizes, nonionic scleroglucan type polysaccharide and a starch having its molecular weight increased by polymerization, enhanced oil recovery |
| 04/02/1996 | US5504061 Drilling fluid composition and process for the filtrate reduction of drilling fluid compositions containing mixed metal hydroxides |
| 04/02/1996 | US5503672 High temperature retarders for oil field cements, cement slurries and corresponding cementing processes |
| 04/02/1996 | US5503671 High temperature retarders for oil field cements, cement slurries and corresponding cementing processes |
| 03/27/1996 | EP0702745A1 Non-cryogenic production of nitrogen for on-site injection in downhole drilling |
| 03/27/1996 | EP0702718A1 An enzyme exhibiting mannanase activity |
| 03/27/1996 | EP0460067B1 Water-wettable drilling mud additives containing uintaite |
| 03/26/1996 | US5502030 Liquid additive comprising a sulfonated asphalt and processes therefor and therewith |
| 03/26/1996 | US5501277 Combating lost circulation during the drilling of wells |
| 03/26/1996 | US5501276 Drilling fluid and filter cake removal methods and compositions |
| 03/26/1996 | US5501275 Control of particulate flowback in subterranean wells |
| 03/26/1996 | US5501274 Thermoplastic particles, ribbons or flakes |
| 03/26/1996 | CA2056007C Nutrient injection method for subterranean microbial processes |
| 03/22/1996 | CA2158674A1 Dispersion of solid particles in water |
| 03/21/1996 | WO1996008673A1 A method for inhibiting hydrate formation |
| 03/21/1996 | WO1996008672A1 A method for inhibiting hydrate formation |
| 03/21/1996 | WO1996008636A1 Surface active agents as gas hydrate inhibitors |
| 03/21/1996 | WO1996008543A1 Wellbore fluids |
| 03/21/1996 | WO1996008456A1 A method for inhibiting hydrate formation |
| 03/21/1996 | CA2175923A1 Wellbore fluids |
| 03/20/1996 | EP0702127A1 Downhole drilling fluid and filter cake removal |
| 03/20/1996 | EP0702074A1 Use of mixtures containing acetal |
| 03/20/1996 | EP0702073A1 Shale stabilising drilling fluid employing saccharide derivatives |
| 03/20/1996 | EP0701593A1 Drilling fluids comprising mostly linear olefins |
| 03/19/1996 | US5499679 Method of improving oil and gas well productivity |
| 03/19/1996 | US5499677 Emulsion in blast furnace slag mud solidification |
| 03/16/1996 | CA2158323A1 Use of acetal-containing mixtures |
| 03/14/1996 | WO1996007763A1 Method for removing alkaline sulfate scale |
| 03/14/1996 | WO1996007710A1 Stabilising emulsions |
| 03/13/1996 | EP0700987A2 Method of inhibiting corrosion in aqueous systems |
| 03/13/1996 | CN1118617A Application of N,N-dialkylamides to reduce precipitation of asphalt from crude oil |
| 03/13/1996 | CN1118616A Method for drilling and cementing a well |
| 03/13/1996 | CN1118615A pH dependent process for retarding the gelation rate of a polymer gel utilized to reduce permeability in or near a subterranean hydrocarbon-bearing formation |
| 03/13/1996 | CA2158117A1 Method of inhibiting corrosion in aqueous systems using poly(amino acids) |
| 03/12/1996 | US5498596 Olefins, polyolefins, paraffins |
| 03/12/1996 | US5497830 Coated breaker for crosslinked acid |
| 03/06/1996 | EP0699729A1 Non-hydrocarbon invert emulsions for use in well drilling operations wherein the external phase comprises poly(1,4-oxybutylene)glycol |
| 03/06/1996 | EP0699269A1 Method for placement of a scale inhibitor in a formation |
| 03/05/1996 | US5495891 Foamed gel employed as a drilling fluid, a lost circulation fluid, or a combined drilling/lost circulation fluid |
| 02/28/1996 | EP0698091A1 Process for the preparation of immunogens or diagnostic reagents, and immunogens or diagnostic reagents thereby obtainable |
| 02/28/1996 | CN1031151C Underground petroleum-containing formations and equipment associated therewith |
| 02/27/1996 | USRE35163 Preparing additive by mixing high and low softening point uintaite solids, causticized lignite, strongly lipophilic nonionic surfactant |
| 02/27/1996 | US5494607 Alkyl substituted phenol-polyethylenepolyamine-formaldehyde resins as asphaltene dispersants |
| 02/27/1996 | US5494120 Glycoside-in-oil drilling fluid system |
| 02/27/1996 | CA2007965C Suppression of the evolution of hydrogen sulfide gases from petroleum residua |
| 02/25/1996 | CA2156810A1 Non-hydrocarbon invert emulsions for use in well drilling operations wherein the external phase comprises poly (1-4,oxybutylene) glycol |
| 02/21/1996 | EP0697059A1 Hydrocarbon gels useful in formation fracturing |
| 02/21/1996 | EP0615539B1 Drilling mud additive |
| 02/20/1996 | US5492828 Enhanced oil recovery by grwoing thermophilic microbial strains in a medium where crude oil is supplemented with carbon source, isolation, growing them in a medium contaning crude oil and carbon source in lower amount, |
| 02/20/1996 | US5492178 Well treating methods and devices using particulate blends |
| 02/20/1996 | US5492177 Catalytic polymerization of allyl monomer, enhanceing bonding with silane coupler |
| 02/20/1996 | US5492176 Blocking by solidification a coupling allyl polymer forming in situ at high temperature |
| 02/15/1996 | WO1996004464A1 Lightweight proppants and their use in hydraulic fracturing |
| 02/15/1996 | WO1996004462A1 Hydrate inhibition |
| 02/15/1996 | WO1996004350A1 Foamed drilling fluids, their process for preparation and the corresponding drilling method |
| 02/15/1996 | WO1996004349A1 Water-based drilling fluid |
| 02/15/1996 | WO1996004348A1 Drilling fluid additives for hydrate prone environments having water-sensitive materials, drilling fluids made thereof, and method of drilling hydrate prone environments having water-sensitive materials |
| 02/14/1996 | EP0696335A1 Acidising underground reservoirs |
| 02/13/1996 | US5491269 Method for inhibiting hydrate formation |
| 02/13/1996 | US5490877 Low-viscosity cement composition |
| 02/08/1996 | WO1996003474A1 Drilling fluid additives for improved shale stabilization, the drilling fluid formed therefrom and method of using same |
| 02/07/1996 | EP0695795A1 Foamed drilling fluids, their process for preparation and the corresponding drilling method |
| 02/07/1996 | EP0695392A1 Stimulation of coalbed methane production |
| 02/07/1996 | EP0695333A1 Removing fines from a spent aqueous well treating fluid |
| 02/06/1996 | US5489735 Cleaning surface to remove radioactive materials with a mixture consisting of oxalic acid, citric acid, polyaminocarboxylic acid, alkali metal and ammonium salts |
| 02/06/1996 | US5489574 Cementitious composition for the cementation of oil wells |
| 02/06/1996 | US5488991 Including a polyacrylic acid phosphinate to inhibit gelation |
| 02/06/1996 | CA2130022A1 Well treatment fluid and method of production and use thereof |
| 02/01/1996 | WO1996002608A1 Method of controlling production of excess water in oil and gas wells |
| 01/30/1996 | US5488083 Method of gelling a guar or derivatized guar polymer solution utilized to perform a hydraulic fracturing operation |
| 01/30/1996 | US5487425 Composition and method for recovery of petroleum and gas |
| 01/29/1996 | CA2154850A1 Fluid loss control |
| 01/25/1996 | DE4425951A1 Poly:succinimide, poly:aspartic acid and maleamic acid prepn. without extraneous additives |
| 01/23/1996 | US5486312 High temperature stable gels |
| 01/18/1996 | WO1996001358A1 A chemical additive and process for removing solids from a well drilling system |
| 01/17/1996 | EP0692459A1 Means for water treatment |
| 01/17/1996 | CN1030709C Water-dispersity polymer composite and preparing method thereof |
| 01/16/1996 | US5484895 Graft copolymers of vascular plants, method of making same and uses therefore |
| 01/16/1996 | US5484488 Add acid and neutralizer to react to generate heat to melt wax deposit, forming salt dispersing in oil |
| 01/16/1996 | US5484478 Polymer containing phosphinate group in backbone, repair and completion of oil and gas wells |
| 01/16/1996 | US5484028 Method of drilling with fluid including nut cork and drilling fluid additive |
| 01/16/1996 | US5484020 Remedial wellbore sealing with unsaturated monomer system |
| 01/16/1996 | US5483986 Cementing in well bores, forming separator plug in situ by vulcanization of rubber |
| 01/11/1996 | WO1996000762A1 Thermally stable oil-base drilling fluid |
| 01/10/1996 | EP0691454A1 Fluid systems for controlling fluid losses during hydrocarbon recovery operations |
| 01/10/1996 | EP0691315A1 Process for manufacturing of aqueous, pumpable compositions containing clay |
| 01/10/1996 | EP0690899A1 Non toxic, biodegradable well fluids |
| 01/09/1996 | US5482123 Method and apparatus for pressure coring with non-invading gel |
| 01/09/1996 | US5482118 Process for recovering hydrocarbon |
| 01/09/1996 | CA2153460A1 Process for preparing pumpable aqueous clayey blends |
| 01/04/1996 | WO1996000253A1 A surface active composition containing an acetal or ketal adduct |
| 01/02/1996 | US5480933 In oil wells, enhanced oil recovery |
| 01/02/1996 | US5480863 Brine viscosification |
| 01/02/1996 | US5480860 Methods for reducing sulfides in sewage gas |
| 01/02/1996 | US5479987 Drilling and cementing with glycoside-blast furnace slag-drilling fluid |
| 01/02/1996 | CA2058869C Primary cementing |
| 12/27/1995 | EP0688848A1 Concentrated system based on a thickening agent, said system being dispersible and thickenable by dilution in aqueous media |