覃勇， 蒋官澄， 邓正强， 葛炼（.川庆钻探工程有限公司钻井液技术服务公司，成都6005；.中国石油大学（北京），北京000）

覃勇等.抗高温油基钻井液主乳化剂的合成与评价[J].钻井液与完井液，2016，33（1）：6-10.



抗高温油基钻井液主乳化剂的合成与评价

覃勇1， 蒋官澄2， 邓正强2， 葛炼1
（1.川庆钻探工程有限公司钻井液技术服务公司，成都610051；2.中国石油大学（北京），北京102200）

覃勇等.抗高温油基钻井液主乳化剂的合成与评价[J].钻井液与完井液，2016，33（1）：6-10.

摘要以妥尔油脂肪酸和马来酸酐为主要原料合成了一种油基钻井液抗高温主乳化剂HT-MUL，并确定了妥尔油脂肪酸单体的最佳酸值及马来酸酐单体的最优加量。对HT-MUL进行了单剂评价，结果表明HT-MUL的乳化能力良好，配制的油水比为60∶40的油包水乳液的破乳电压最高可达490 V，90∶10的乳液破乳电压最高可达1 000 V。从抗温性、滤失性、乳化率方面对HT-MUL和国内外同类产品进行了对比，结果表明HT-MUL配制的乳液破乳电压更大、滤失量更小、乳化率更高，整体性能优于国内外同类产品。应用主乳化剂HT-MUL配制了高密度的油基钻井液，其性能评价表明体系的基本性能良好，在220 ℃高温热滚后、破乳电压高达800 V，滤失量低于5 mL。HT-MUL配制的油基钻井液具有良好的抗高温性和乳化稳定性。

关键词抗高温；油基钻井液；主乳化剂

Synthesis and Evaluation of A Primary Emulsifier for High Temperature Oil Base Drilling Fluid

QIN Yong1, JIANG Guancheng2, DENG Zhengqiang2, GE Lian1(1. Drilling Fluid Service of CNPC Chuanqing Drilling Engineering Company Ltd., Chengdu Sichuan 610051,China; 2. China University of Petroleum-Beijing, Beijing 102200,China)

Abstract A primary emulsifier, HT-MUL, for high temperature oil base drilling fluid was developed using tall oil fatty acids and maleic anhydride, and the optimum acid value of tall oil fatty acids and optimum concentration of maleic anhydride for the reaction were determined. Evaluation of HT-MUL shows that HT-MUL performs very well as an emulsifier. Using HT-MUL, a water-in-oil emulsion (O/W ratio = 60∶40) was formulated, having electrical stability of 490 V, and another water-in-oil emulsion (O/W ratio = 90∶10), having electrical stability of 1,000 V. Comparison of HT-MUL with other primary emulsifiers demonstrates that emulsions formulated with HT-MUL have higher electrical stability voltage, lower filter loss and higher rate of emulsion, proving that HT-MUL has better general performance than other emulsifiers. A high performance high density oil base drilling fluid was formulated using HT-MUL, retaining electrical stability of 800 V and filter loss less than 5 mL after hot rolling at 220 ℃. Oil base drilling fluids formulated with HT-MUL have good high temperature performance and emulsion stability.

Key words High temperature resistant; Oil base drilling fluid; Primary emulsifier

油基钻井液具有抗高温、抑制性强、润滑性好和对油气层损害程度小的优点[1-3]。油基钻井液的基础液主要为油包水乳液，其整体性能的好坏主要取决于乳液是否稳定，使用的主乳化剂的效果是否良好[4]。……