High-temperature high-pressure (HTHP) stable synthetic polymer for water based oil-well servicing fluids
申请人:ISP INVESTMENTS INC.
公开号:US10202533B2
公开(公告)日:2019-02-12
Stable water based High-Temperature-High-Pressure (HTHP) and/or Non-HTHP crosslinked copolymers for oil and gas applications consist of (i) a crosslinked, linear polyvinyl amide/polymerizable carboxylic acid) copolymer, having a composition, by weight, of 25-75 wt. % of a vinyl amide monomer selected from vinyl pyrrolidone, vinyl caprolactam, N-vinyl-N-methylacetamide and mixtures thereof, and 25-75 wt. % of a polymerizable carboxylic acid monomer selected from acrylic acid, (meth)acrylic acid, crotonic acid, itaconic acid, maleic acid and mixture thereof; and (ii) a crosslinker in an amount of 0.01-5% based on weight of total monomers. Also discloses relevant compositions comprising said copolymer and method of use thereof.
用于石油和天然气应用的稳定水基高温高压(HTHP)和/或非高温高压交联共聚物包括:(i) 交联的线性聚乙烯酰胺/可聚合羧酸共聚物,其成分(按重量计)为 25-75 wt.%的乙烯基酰胺单体(选自乙烯基吡咯烷酮、乙烯基己内酰胺、N-乙烯基-N-甲基乙酰胺及其混合物)和 25-75 重量%的可聚合羧酸单体(选自丙烯酸、(甲基)丙烯酸、巴豆酸、衣康酸、马来酸及其混合物);以及 (ii) 一种交联剂,其用量为总单体重量的 0.01-5%。还公开了包含所述共聚物的相关组合物及其使用方法。