MULTIFUNCTIONAL FOAMING COMPOSITION WITH WETTABILITY MODIFYING, CORROSION INHIBITORY AND MINERAL SCALE INHIBITORY/DISPERSANTS PROPERTIES FOR HIGH TEMPERATURE AND ULTRA HIGH SALINITY
申请人:Instituto Mexicano Del Petróleo
公开号:EP3023476A1
公开(公告)日:2016-05-25
The present invention is related to the obtaining and using of multifunctional foaming compositions with wettability modifying, corrosion inhibitory and inhibitory/dispersants mineral scale properties with high stability in environments of high temperature, high pressure and tolerance to high concentrations of divalent ions such as calcium , magnesium, strontium and barium. The multifunctional foaming compositions are obtained from the combination of supramolecular complexes resulting from interactions of alkyl amido propyl hydroxysultaines and/or alkyl amido propyl betaines and/or alkyl hydroxysultaines and/or alkyl betaines and anionic surfactant of type alkyl hydroxyl sodium sulfonate and alkenyl sulphonates of sodium, with cationic surfactants as tetraalkyl ammonium halides and copolymers derivatives of itaconic acid/sodium vinyl sulfonate and/or terpolymers derived from itaconic acid/sodium vinyl sulphonate/aconitic acid. These multinational foaming compositions control the gas channeling and favorably change the wettability and increase the recovery factor of crude oil in naturally fractured reservoirs of carbonate type and heterogeneous lithology. In addition to this, the multifunctional foaming compositions of this invention exhibit anti-corrosive properties in typical environments of production tubing of crude oil and antifouling/dispersants of mineral salts as calcium carbonate, calcium sulfate, barium and strontium in the reservoir and in the production and injection pipelines.
本发明涉及多功能发泡组合物的获得和使用,该组合物具有润湿改性、缓蚀和抑制/分散矿物垢的特性,在高温、高压环境中具有高稳定性,并能耐受高浓度的钙、镁、锶和钡等二价离子。多功能发泡组合物是由烷基酰胺丙基羟基磺烷和/或烷基酰胺丙基甜菜碱和/或烷基羟基磺烷和/或烷基甜菜碱与烷基羟基磺酸钠和烯基磺酸钠类型的阴离子表面活性剂相互作用产生的超分子复合物结合而成、阳离子表面活性剂,如四烷基卤化铵和衣康酸/乙烯基磺酸钠的共聚物衍生物和/或衣康酸/乙烯基磺酸钠/乌头酸的三元共聚物。这些多元发泡组合物能控制气体通道,并能在碳酸盐岩类型和异质岩性的天然裂缝储层中有效改变润湿性,提高原油采收率。此外,本发明的多功能发泡组合物在原油生产油管的典型环境中具有抗腐蚀性能,在储层和生产及注入管道中具有防污/分散碳酸钙、硫酸钙、钡和锶等矿物盐的作用。