Patent application number | Description | Published |
20130005616 | ENHANCED OIL RECOVERY PROCESS USING WATER SOLUBLE POLYMERS HAVING IMPROVED SHEAR RESISTANCE - An enhanced oil recovery process using high molecular weight water soluble polymer consisting in: —dispersing said polymer in injection brine, —and then injecting the dispersed polymer in the subterranean formation, characterized in that the high molecular weight water soluble polymer contains at least a non-ionic monomer and at least an amphiphilic monomer containing at least a side chain having an HLB above 4.5, said high molecular weight water soluble polymer having a molecular weight of more than 10 000 000. | 01-03-2013 |
20130072405 | WATER-SOLUBLE POLYMERS FOR OIL RECOVERY - The present invention refers to the use of anionic water-soluble polymers being partially or totally neutralized with an organic counter-ion for oil filed application, especially tertiary oil recovery steps. | 03-21-2013 |
20130255954 | NOVEL AQUEOUS FRACTURING FLUID COMPOSITION AND FRACTURING PROCESS USING THE COMPOSITION - Fracturing fluid comprising, in solution in water, a proppant and an associative amphoteric polymer, the said polymer having a molecular weight of at least 1 000 000 g/mol and comprising:
| 10-03-2013 |
20130277055 | METHOD FOR THE ASSISTED RECOVERY OF PETROLEUM - The invention relates to a method for the assisted recovery of petroleum in a deposit by means of the introduction of an aqueous solution of a hydrosoluble polymer into the deposit, said method being characterised in that said aqueous solution is prepared by dissolving a polymer-based composition containing at least one hydrosoluble polymer, at least one radical capturing agent, and at least one sacrificial agent, in an aqueous solution subjected to a step of treatment with at least one deoxygenating agent, prior to the introduction of the polymer-based composition. | 10-24-2013 |
20140134749 | SAMPLING PROCEDURE FOR POLYMER-BASED SOLUTIONS USED IN UNDERGROUND FORMATIONS - This invention concerns a sampling procedure for an aqueous hydrosoluble polymer solution flowing in a main circuit, enabling a sample to be collected to undergo at least one analysis under ambient air giving at least one property of the hydrosoluble polymer characterised in that a stabilizing solution is added to the aqueous hydrosoluble polymer solution, according to a discontinuous addition method, before or after sampling from the main circuit, so as to obtain a sample comprising a mixture of aqueous hydrosoluble polymer solution and stabilizing solution in which the hydrosoluble polymer is protected against attacks it may undergo in an atmosphere containing at least 10% by volume of oxygen. | 05-15-2014 |
20140238943 | Method For Treating Suspensions Of Solid Particles In Water Using Post Hydrolyzed Polymers - A method for treating a suspension of mineral particles in water, such as mineral tailings, includes the step of contacting the suspension of mineral particles in water with a specific water-soluble polymer. This polymer is preferably a water-soluble polymer having an anionicity of between 10 to 55 mol %, and more preferably 20 to 50 mol %. Furthermore, this polymer has preferably a molecular weight between 15 and 40 million daltons, and more preferably between 18 and 30 million. The method involves adding the specific polymer into a thickener containing the tailings to treat, and/or during transport of the suspension to a deposition area for dewatering and solidification, or to the tailings to treat followed by a mechanical treatment such as centrifugation, screw press and filtration. | 08-28-2014 |
20140287967 | WATER-SOLUBLE POLYMERS FOR OIL RECOVERY - The present invention refers to the use of anionic water-soluble polymers being partially or totally neutralized with an organic counter-ion for oil filed application, especially tertiary oil recovery steps. | 09-25-2014 |
20140311950 | Method For Recovering Bitumen From Tar Sands - Method for recovering bitumen from tar sands, according to which sands are brought into contact with at least one partially hydrolyzed poly(vinyl acetate) (co)polymer A. | 10-23-2014 |
20140319070 | Composition For Treating Suspensions Of Solid Particles In Water And Method Using Said Composition - A composition for treating an aqueous suspension of mineral particles includes at least one water soluble polymer and at least one calcium salt, magnesium salt or both a Calcium salt and a Magnesium salt. The composition is in powder form. | 10-30-2014 |
20140326457 | Process For The Enhanced Recovery Of Oil By Injection Of A Polymer Solution - Process for the enhanced recovery of oil comprising introducing into the injection fluid at least one linear or structured water-soluble copolymer obtained by polymerization of:
| 11-06-2014 |
20140326458 | PROCESS FOR THE ENHANCED RECOVERY OF OIL BY INJECTION OF A POLYMER SOLUTION - Process for enhanced oil recovery employing an aqueous solution comprising at least one linear or structured water-soluble copolymer obtained by polymerization:
| 11-06-2014 |
20150065614 | Functionalized Polyamines For Clay Mitigation - The present invention provides methods and compositions for treating clay-bearing aggregates, particularly those used for construction purposes, whereby inclusion of fines is maximized due to minimization of clay washing which tends to remove such fines, and whereby performance of the aggregate-containing construction material is enhanced. Exemplary methods comprise introducing to clay a water-soluble, functionalized polyamine comprising a water-soluble polyamine formed by reacting an amine compound with an epoxy compound, the polyamine thus reacted being functionalized through the use of certain halide, sulfate, or epoxy compounds. | 03-05-2015 |