文章摘要
徐彩霞,陈立宇.P(ST-g-ACA)/BT复合降滤失剂的合成与性能[J].精细化工,2020,37(8):
P(ST-g-ACA)/BT复合降滤失剂的合成与性能
Synthesis and performance of P(ST-g-ACA)/BT composites as filtrate reducing agents
投稿时间:2020-02-11  修订日期:2020-05-16
DOI:
中文关键词: 膨润土  复合降滤失剂  水基钻井液  高温  降滤失机理  油田化学品
英文关键词: bentonite  composite filter-loss reducer  water base drilling  high temperature  reduction of filtration mechanism  oil-field chemicals
基金项目:
作者单位E-mail
徐彩霞 西北大学 2569733937@qq.com 
陈立宇 西北大学 chenly@nwu.edu.cn 
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中文摘要:
      以玉米淀粉、丙烯酰胺、2-丙烯酰胺基-2-甲基丙磺酸、二甲基二烯丙基氯化铵和膨润土为原料,采用单体插层原位聚合法制备了一种复合降滤失剂P(ST-g-ACA)/BT。 采用FTIR、XRD、TGA和TEM对其进行表征,对降滤失剂的降滤失性能和流变性能进行了评价,并对其降滤失机理进行了推测。结果表明,该降滤失剂具有“鸡蛋卷”结构和良好的热稳定性。当P(ST-g-ACA)/BT加量为基浆的2%(质量分数)时,淡水基浆中滤失量为4 mL(常温中压),10%盐水基浆中滤失量为22 mL(150 ℃、3.5 MPa),表明降滤失剂能提高水基钻井液的热稳定性、耐盐性和降滤失性。在10%盐水基浆中,与其他降滤失剂相比,P(ST-g-ACA)/BT降滤失效果明显。
英文摘要:
      A composite filter-loss reducer, P(ST-g-ACA)/BT, was prepared with corn starch, acrylamide, 2-acrylamido-2-methylpropanesulfonic acid, diallyl dimethyl ammonium chloride and bentonite by monomer intercalation. The filter-loss reducer was characterized with FTIR, XRD , TGA and TEM, the rheological properties and filtration loss of the filter-loss reducer were evaluated. In addition, the mechanism of fluid loss was presented. The results indicated that the filter-loss reducer possessed a “egg coil ” structure and a good thermal stability. Evaluation of P(ST-g-ACA)/BT in a water base drilling fluid showed that, at 2% (mass fraction) concentration of P(ST-g-ACA)/BT, the filter loss of the fresh water-based drilling fluid is 4 mL(normal temperature and medium pressure). The HTHP filter loss of the 10% salt water-based drilling fluid is 22 mL (150 ℃、3.5 MPa). Evaluation results showed that the filter-loss reducer could improve the properties of the thermal stability, salt tolerance, and fluid loss control of water-based drilling fluids. In the 10% salt water-based drilling fluid, the P(ST-g-ACA)/BT is better than other filter-loss reducers in filtration control.
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