石油学报 ›› 2011, Vol. 32 ›› Issue (3): 470-473.DOI: 10.7623/syxb201103014

• 油田开发 • 上一篇    下一篇

抗高温耐盐 AMPS/AM/AA 降失水剂的合成及其性能表征

郭锦棠 1  周贤明 1  靳建洲 2  于永金 2   

  1. 1天津大学化工学院  天津  300072; 2中国石油集团钻井工程技术研究院  北京  100089
  • 收稿日期:2010-07-30 修回日期:2010-10-14 出版日期:2011-05-25 发布日期:2011-07-19
  • 通讯作者: 郭锦棠
  • 作者简介:郭锦棠,女,1968年2月生,1998年获天津大学化工学院博士学位,现为天津大学化工学院高分子科学与工程系副教授,主要从事油田化学品、环境友好高分子材料的开发。
  • 基金资助:

    国家科技重大专项(2008ZX05021和2008ZX05021-004)资助。

The synthesis and performance characterization of the AMPS/AM/AA terpolymer as a temperature-resistance,salt-tolerance fluid-loss additive

GUO Jintang 1  ZHOU Xianming 1  JIN Jianzhou 2  YU Yongjin 2   

  • Received:2010-07-30 Revised:2010-10-14 Online:2011-05-25 Published:2011-07-19

摘要:

以2-丙烯酰胺基-2-甲基丙磺酸(AMPS)、丙烯酰胺(AM)、丙烯酸(AA)为单体,采用新型偶氮类引发剂(V50)合成了AMPS/AM/AA三元抗高温耐盐油井水泥降失水剂,通过设计正交实验,确定了共聚物的最佳合成条件为:AMPS/AM/AA的摩尔比为45∶45∶10,聚合反应温度为60℃,单体质量百分数为9%,引发剂摩尔百分比为0.60%,反应介质pH值为8;反应时间4 h。通过红外光谱分析验证了三元共聚物的结构;采用DSC与TG证实了三元共聚物在300℃具有较好的热稳定性;水泥浆性能测试表明,该降失水剂能够在180℃/6.9 MPa、饱和盐水中,控制水泥浆API失水量小于100 mL。

关键词: AMPS/AM/AA三元共聚物, 抗高温, 耐盐, 降失水剂, 转化率

Abstract:

The present paper dealt with the synthesis of the AMPS/AM/AA terpolymer as a temperature-resistance, salt-tolerance fluid-loss additive, which used 2-acrylamido-2-methylpropanesulphonic acid(AMPS), acrylamide(AM) and acrylic acid(AA) monomers and initiated by a new type of the azoic initiator, V50. Optimal conditions of the synthesis determined through orthogonal experiments were proposed as a 45∶45∶10 mole ratio for AMPS, AM and AA, respectively, 60℃ for polymerization temperature, 9% for the weight fraction of monomers, 0.60% for the initiator dosage, pH 8 for the medium and 4 hours for polymerization time. The structure of the terpolymer was confirmed by infrared spectrum(IR) analysis. Differential scanning calorimetry(DSC) and thermogravimetry(TG) tests showed that a good thermo-stabilization of the terpolymer could be maintained at 300℃. The performance tests of cement slurry demonstrated that this terpolymer fluid-loss additive could control the API fluid-loss amount below 100 mL under the condition of 180℃/6.9 MPa saturated brine.

Key words: AMPS/AM/AA terpolymer, temperature-resistance, salt-tolerance, fluid-loss additive, conversion rate