AMPS共聚物类抗盐降失水剂HJS-Ⅱ室内评价
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摘要
AMPS共聚物是固井工程使用最广泛的聚合物类降失水剂,具有良好的耐温、抗盐和抗水解性能。降失水剂HJS-Ⅱ是以2-丙烯酰胺-2-甲基丙磺酸(AMPS)和丙烯酰胺(AM)为原料,过硫酸铵-亚硫酸氢钠氧化还原体系为引发剂,用水溶液聚合的方法合成一种AMPS/AM共聚物。实验结果表明:HJS-Ⅱ在中温区和高温区适宜掺量为1. 5%和2. 2%; HJS-Ⅱ具有良好的抗盐性能,在质量分数为25%的含盐水泥浆中掺量为3. 5%时可以控制滤失量在50 m L以下。
AMPS copolymer is the most widely used polymer filtrate reducer in well cementing engineering. It has good temperature resistance,salt resisting and hydrolysis resistance. AMPS copolymer HJS-Ⅱ was evaluated composed of2-acrylamide-2-methylpropylene sulfonic acid( AMPS) and acrylamide( AM) as raw materials,and ammonium persulfate-sodium bisulfite REDOX system as the initiator. Synthesized by aqueous solution polymerization,the results showed that the compliance dosage of HJS-Ⅱ was 1. 5% and 2. 2% in the moderate and the high temperature zones. HJS-Ⅱ had good salt resistance and can control the filter loss below 50 m L when the mass fraction was 3. 5% in the 25% NaCl salt-water cement slurry system.
AMPS copolymer is the most widely used polymer filtrate reducer in well cementing engineering. It has good temperature resistance,salt resisting and hydrolysis resistance. AMPS copolymer HJS-Ⅱ was evaluated composed of2-acrylamide-2-methylpropylene sulfonic acid( AMPS) and acrylamide( AM) as raw materials,and ammonium persulfate-sodium bisulfite REDOX system as the initiator. Synthesized by aqueous solution polymerization,the results showed that the compliance dosage of HJS-Ⅱ was 1. 5% and 2. 2% in the moderate and the high temperature zones. HJS-Ⅱ had good salt resistance and can control the filter loss below 50 m L when the mass fraction was 3. 5% in the 25% NaCl salt-water cement slurry system.
引文
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[2]刘学鹏,刘仍光.油井水泥降失水剂的作用机理研究[J].化学研究与应用,2017,29(12):1928-1932.
[3]郭小阳,刘崇建,俞平方.水泥浆对地层损害的研究[J].西南石油学院学报,1996,18(4):19-28.
[4]刘崇建,黄柏宗,徐同台,等.油气井注水泥理论与应用[M].北京:石油工业出版社,2001:90-106.
[5]秦伟堂,张宏军,郑成胜,等.国内外油井水泥降失水剂概述[J].钻井液与完井液,2005,22(2):54-58.
[6]王清顺.油井水泥用合成聚合物降失水剂现状及发展趋势[J].钻井液与完井液,2007,24(2):67-69.
[7]王展旭,孙伟,张科. AMPS共聚物固井降失水剂的合成及性能研究[J].青岛科技大学学报,2004,25(4):308-310.
[8]张竞. AM/AMPS共聚物的合成与降虑失性能研究[D].南京:南京工业大学,2006.