MOPBG-AMPS共聚物阻垢剂的合成及硫酸钡阻垢性能评价

化工进展

MOPBG-AMPS共聚物阻垢剂的合成及硫酸钡阻垢性能评价

魏晓飞，王明刚

山东大学特种功能聚集体材料教育部重点实验室，山东大学化学与化工学院，山东济南 250100

出版日期:2012-09-05 发布日期:2012-09-05

Synthesis of MOPBG-AMPS copolymer and evaluation of inhibition of barium sulfate scale

WEI Xiaofei，WANG Minggang

Key Laboratory of Special Functional Aggregated Materials，Ministry of Education，School of Chemistry and Chemical Engineering，Shandong University，Jinan 250100，Shandong，China

Online:2012-09-05 Published:2012-09-05

摘要/Abstract

摘要： 以水为溶剂，过硫酸铵为引发剂，以2-（N,N-二亚甲基羧基）胺甲基-丙烯酰胺基二乙酸（MOPBG）和2-丙烯酰胺-2-甲基丙磺酸（AMPS）为单体，制备了一种针对油气田使用的新型共聚物阻垢剂。通过红外光谱和热重分析测定了共聚物的结构和不同配比共聚物的热稳定性能；采用静态阻垢法研究了共聚物浓度对硫酸钡阻垢率的影响。结果表明：单体配比为n(MOPBG)∶n(AMPS)=3∶(1.5～2)时，共聚物具有最佳的耐热性能。阻垢效果最优共聚物添加量分别为：共聚物[n(MOPBG)∶n(AMPS)=3∶1.5]为20 mg/L，阻垢率为 98.9%；共聚物[n(MOPBG)∶n(AMPS)=3∶2]为15 mg/L，阻垢率为 96.4%。利用扫描电子显微镜，探讨了共聚物的阻垢机理。

关键词: 聚合物阻垢剂, 油气田, 硫酸钡, 聚合物阻垢剂, 油气田, 硫酸钡

Abstract: A water-soluble MOPBG-AMPS scale inhibition agent was prepared from N，N-(2-methylene-1-oxo-1,3-propanediyl)-bis-glycine (MOPBG) and 2-acrylamido-2-methyl propane sulfonic acid (AMPS) in aqueous solution using persulfate as initiator. The structure and thermal stability of the copolymer was characterized by FTIR and TGA. Using the static experiment method，the inhibition of BaSO4 scale was studied. The results showed that the copolymer [n(MOPBG)∶n(AMPS)=3∶(1.5—2)] showed the best heat resistance. As an excellent scale inhibitor，the inhibition capability of copolymer [n(MOPBG)∶n(AMPS)=3∶1.5] reached 98.9% at the dose of 20 mg/L，the inhibition capability of copolymer [n(MOPBG)∶n(AMPS)=3∶2] reached 96.4% at the dose of 15 mg/L. Formation of BaSO4 crystals was determined by SEM，and the mechanism of scale inhibition was discussed.

Key words: polymer scale inhibitor, oil gas field, barium sulfate, polymer scale inhibitor, oil gas field, barium sulfate

魏晓飞，王明刚. MOPBG-AMPS共聚物阻垢剂的合成及硫酸钡阻垢性能评价[J]. 化工进展.

WEI Xiaofei，WANG Minggang. Synthesis of MOPBG-AMPS copolymer and evaluation of inhibition of barium sulfate scale[J]. Chemical Industry and Engineering Progree.