| Patent application number | Description | Published |
|---|
| 20100240802 | WATER-SOLUBLE AND BIODEGRADABLE COPOLYMERS ON A POLYAMIDE BASIS AND USE THEREOF - Copolymers based on a polyamide containing at least one graft lateral chain consisting of ethylenic unsaturated compounds, in construction chemistry, as well as with the prospecting, exploiting and completion of oil-and gas deposits and with deep bore holes. | 09-23-2010 |
| 20100305007 | COPOLYMER BASED ON A SULFONIC ACID-CONTAINING COMPOUND - A copolymer containing, as monomer components, a) at least one sulfonic acid-containing compound, b) at least one nitrogen-containing N-vinylamide, one acrylamide or methacrylamide and c) at least one bifunctional or higher-functional vinyl ether is proposed. These copolymers are suitable in particular as thixotropic agents, antisegregation agents and water retention agents and overall as an additive in cement-containing but also gypsum-based systems. Such copolymers having a molecular weight of >40 000 g/mol can be used in particular as admixtures in the exploration of mineral oil and natural gas deposits. | 12-02-2010 |
| 20110083846 | PROCESS FOR TERTIARY MINERAL OIL PRODUCTION USING SURFACTANT MIXTURES - A process for mineral oil production, especially Winsor type III microemulsion flooding, in which an aqueous surfactant formulation which comprises at least one nonionic surfactant having 8 to 30 ethoxy units, which has a polydispersity of from 1.01 to 1.12, and at least one further surfactant is forced through injection wells into a mineral oil deposit and crude oil is removed from the deposit through production wells. | 04-14-2011 |
| 20110083847 | PROCESS FOR TERTIARY MINERAL OIL PRODUCTION USING SURFACTANT MIXTURES - A process for mineral oil production, especially Winsor type III microemulsion flooding, in which an aqueous surfactant formulation which comprises at least one alkylpolyalkoxysulfate comprising propoxy groups, and at least one further surfactant differing therefrom is used, is forced through injection wells into a mineral oil deposit and crude oil is removed from the deposit through production wells. The alkylpolyalkoxysulfate comprising propoxy groups is prepared in this case by sulfating an alkoxylated alcohol, the alkoxylated alcohol being prepared by alkoxylating an alcohol using double metal cyanide catalysts or double hydroxide clays. | 04-14-2011 |
| 20110083848 | PROCESS FOR MINERAL OIL PRODUCTION USING SURFACTANT MIXTURES - A process for mineral oil production especially Winsor type III microemulsion flooding, in which an aqueous surfactant formulation which comprises at least one nonionic surfactant having 11 to 40 ethoxy units and a hydrophobic radical having 8 to 32 carbon atoms and at least one further surfactant differing therefrom is forced through injection wells into a mineral oil deposit and crude oil is removed from the deposit through production wells. | 04-14-2011 |
| 20110152134 | METHOD FOR BINDING NON-SOLID OXIDIC INORGANIC MATERIALS WITH ETHERIFIED AMINOPLAST RESINS AND CURED COMPOSITIONS OF SAID MATERIALS AND ETHERIFIED AMINOPLAST RESINS - The present invention relates to a process for binding non-consolidated oxidic inorganic materials with curable formulations which comprise etherified amino resins, and to cured compositions obtainable by the process. A preferred embodiment of the invention comprises a process for stabilizing underground formations composed of oxidic inorganic materials, wherein the curable composition is injected into the underground formation and cured at the temperatures which exist in the formation. | 06-23-2011 |
| 20110160336 | METHOD OF USE OF A POLYVINYL ALCOHOL-BASED COMPOSITION - A composition based on polyvinyl alcohol and a sulfonated ketone/formaldehyde condensate in the preferred mixing ratio of 1:1 as a further component, is provided as a fluid loss additive in mixtures containing hydraulic binders. | 06-30-2011 |
| 20110220353 | USE OF SURFACTANT MIXTURES OF POLYCARBOXYLATES FOR MICROEMULSION FLOODING - The present invention relates to processes for tertiary mineral oil production with the aid of a surfactant mixture and to the use of a surfactant mixture for tertiary mineral oil production by means of Winsor type III microemulsion flooding, by injecting a surfactant mixture through at least one aqueous injection borehole into a mineral oil deposit, and withdrawing crude oil from the deposit through at least one production borehole, wherein the surfactant mixture, for the purpose of lowering the interfacial tension between oil and water to <0.1 mN/m, comprises at least the following components: (a) one or more polycarboxylate(s) comprising at least 50 mol % of acrylic acid units and/or methacrylic acid units and/or maleic acid units and/or itaconic acid units or salts thereof, and (b) one or more anionic and/or nonionic surfactant(s). | 09-15-2011 |
| 20110220364 | PROCESS FOR MINERAL OIL PRODUCTION USING CATIONIC SURFACTANTS HAVING A HYDROPHOBIC BLOCK WITH A CHAIN LENGTH OF 6 TO 10 CARBON ATOMS - The invention relates to a process for mineral oil production by means of Winsor type III microemulsion flooding, in which an aqueous surfactant formulation comprising at least one ionic surfactant of the general formula R | 09-15-2011 |
| 20110220365 | PROCESS FOR PRODUCING MINERAL OIL USING SURFACTANTS BASED ON C16C18-CONTAINING ALKYL PROPOXY SURFACTANTS - The invention relates to a process for mineral oil production by means of Winsor Type III microemulsion flooding, in which an aqueous surfactant formulation comprising at least one ionic surfactant of the general formula R | 09-15-2011 |
| 20110220366 | PROCESS FOR EXTRACTING MINERAL OIL USING SURFACTANTS BASED ON BUTYLENE OXIDE-CONTAINING ALKYL ALKOXYLATES - The invention relates to a process for mineral oil extraction by means of Winsor Type III microemulsion flooding, in which an aqueous surfactant formulation comprising at least one ionic surfactant of the general formula R | 09-15-2011 |
