Synthesis, characterization, and performance evaluation of the AM/AMPS/DMDAAC/SSS quadripolymer as a fluid loss additive for water-based drilling fluid
Synthesis, characterization, and performance evaluation of the AM/AMPS/DMDAAC/SSS quadripolymer as a fluid loss additive for water-based drilling fluid
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DOI：
10.1002/app.41762
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发表时间：
2015-04-10
影响因子：
3
通讯作者：
Wang, Xu
中科院分区：
文献类型：
--
作者：
Bai, Xiaodong;Yang, Yi;Wang, Xu
根据耐高温降失水剂的分子结构设计要求，选择了2-丙烯酰胺-2-甲基丙磺酸(AMPS)、丙烯酰胺(AM)、二甲基二烯丙基氯化铵(DMDAAC)和苯磺酸钠(SSS)作为结构单体。以过硫酸铵为引发剂，通过自由基水溶液聚合合成了一种新型四元共聚物。以含0.5wt%四元聚合物的清水基钻井液滤失量最小为目标，通过正交试验优化了合成条件：AMPS/AM/DMDAAC/SSS的摩尔比为5/7/2/1，单体浓度为30wt%，引发剂浓度为0.8wt%，反应温度为75℃，pH值为10。结果表明，所合成的四元聚合物含有所有设计的官能团。用热重法、差示热重法和差示扫描量热法测试了四聚物的热稳定性。结果表明，该四元聚合物在272.3℃以前热降解不明显，并对其流变性和滤失量进行了评价。结果表明，在180℃热老化16h前后，滤失量随四元共聚物加入量的增加而减小，且热老化前的滤失量小于热老化后的滤失量。高温高压降滤失剂(FL(HTHP))实验结果也表明，该四元聚合物降滤失剂具有优良的耐温性能。(C)2014年威利期刊公司J.Appl。波兰姆。SCI。2015年，132.41762。
According to the molecular structure design requirements of the fluid loss additive resistant to high temperature, 2-acrylamide-2-methyl propane sulfonic acid (AMPS), acrylamide (AM), dimethyl diallyl ammonium chloride (DMDAAC) and sodium styrene sulfonate (SSS) are selected as the structure monomers. Using ammonium persulfate as initiator, a new quadripolymer is synthesized through free radical aqueous solution polymerization. According to the minimum filtration loss of the fresh water-based drilling fluid with 0.5 wt % quadripolymer, The synthesis conditions are optimized by orthogonal test: the mole ratio of AMPS/AM/DMDAAC/SSS is 5/7/2/1, the monomer concentration is 30 wt %, the initiator concentration is 0.8 wt %, the reaction temperature is 75 degrees C and the pH is 10. The structure of the quadripolymer is characterized by Fourier transform infrared spectroscopy and nuclear magnetic resonance hydrogen spectroscopy. The results show that the quadripolymer contains all the designed functional groups. The thermal stability of the quadripolymer is tested by thermogravimetry, differential thermogravimetry, and differential scanning calorimetry. The results show that the thermal degradation of the quadripolymer is not obvious before 272.3 degrees C. The rheological performance and filtration loss of the quadripolymer are evaluated. The results indicate that the filtration loss decreases with the increasing dosage of the quadripolymer before and after thermal aging test at 180 degrees C for 16 h, and the filtration loss before the thermal aging test is smaller than that after the thermal aging test. The high temperature high pressure filtration loss (FL(HTHP)) experiment results also show that the quadripolymer fluid loss additive has excellent temperature-resistant performance. (c) 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41762.