2016年第45卷第4期
石油化工
PETROCHEMICAL TECHNOLOGY
· 453 ·
DOl: 10.3969/j.issn.1000-8144.2016.04.013
抗高温钻并液降滤失剂的评价及其作用机理
马喜平，朱忠祥，侯代勇，石伟（西南石油大学化学化工学院，四川成都610500
[摘要］以甲基丙烯酰氧乙基三甲基氯化铵、2-内烯酰胺基-2-甲基丙磺酸、聚丙烯酰胺和对苯乙烯磺酸钠为原科合成了新型抗高温钻井液降滤失剂PAASD，利用FTIR、HNMR、泥浆失水仪等方法对PAASD进行了表征并研究了其流变性能和降滤失性能。表征结果显示，合成的PAASD为目标产物，其有良好的增黏性和耐温抗盐性能。PAASD钻并液具有良好的耐温抗盐性能和抗钙侵能力。在三磺化（SMP-1/SMC/SMK）钻井液体系加入PAASD后，在150℃，3.5MPa下的高温高压滤失量为16.2 mL，说明PAASD与三磺化钻并液体系具有良好的协同增效作用。PAASD在高温含盐的钻井液中可对黏土颗粒进行有效吸
附。增强了黏土颗粒在高温含盐环境中的水化分散能力。【关键词】钻井液；抗高温降滤失剂；性能评价；作用机理
[文章编号］ 1000 8144(2016)04045308
【中图分类号］TE254.4
［文献标志码］A
Evaluation and action mechanism of heat-resistant filtrate reducer-PAASD used in
drilling fluids
Ma Xiping, Zhu Zhongxiang, Hou Daiyong, Shi Wei
(Chemistry and Chemical Engineering Department, Southwest Petroleum University . Chengdu Sichuan 610500, China)
[Abstract J A filtrate reducer, PAASD, was synthesized from methacryloyloxyethyltrimethyl ammonium chloride, 2-acryloylamino-2-methyl-1-propanesulfonic acid, acrylamide and sodium p-styrenesulfonate, and was characterized by means of FTIR, 'H NMR and mud loss tester. The results showed that PAASD was the target product with good tackability, heat resistance and salt tolerance, and could control the fluid loss of drilling fluid systems efficiently. When PAASD was added into a sulfonated drilling fluid system, the fluid loss of the system was 16.2 mL under the condition of 150 C and 3.5 MPa. It was demonstrated that PAASD and the sulfonated drilling fluid system had a good synergism. In drilling fluids with high temperature and salinity, PASSD could efficiently absorb the clay particles to enhance the dispersity of the clay particles.
[Keywords J drilling fluid; heat-resistant filtrate reducer; performance evaluation; action mechanisn
降滤失剂作为水基钻井液重要的处理剂之主要通过吸附在黏土颗粒表面及增强黏土的水
化能力而在井壁上形成低渗透率、柔韧及薄而致密的滤饼，从而降低钻并液体系的滤失量[1-2]。与常规钻井相比，深井和超深井钻井对钻井液处理剂的要求更高，尤其需要具有良好抗高温耐盐性能的钻并液用降滤失剂[3-]。常规的聚合物类降滤失剂在
【收稿日期］2015-11-25；［修改稿日期］201602-04。
高温下易分解导致性能降低，不能很好地满足实际的钻并要求。目前，国内外开发了很多合成聚合物和改性天然聚合物用作抗高温降滤失剂[7-11]。
基于国内深并和超深并钻并技术对于抗高温处理剂的需求，本工作以甲基丙烯酰氧乙基三甲基氯化铵（DMC）、2-内烯酰胺基-2-甲基内磺酸（AMPS）、聚内烯酰胺（AM）和对苯乙烯磺酸钠
［作者简介］马喜平（1963一），男，四川省成都市人，硕土，教授，电话13880871556，电邮mxp@163.com。联系人：宋忠祥，电话 18328072093.电邮 zzx3705@163.com。