抗高温高密度低毒油包水钻井液的乳化剂优选和研制  

OPTIMIZATION AND DEVELOPMENT OF EMULSIFIERS USED IN INVERT OIL- EMULSION DRILLING FLUID WITH HIGH TEMPERATURE,HIGH DENSITY AND LOW TOXICITY

作　　者：梁大川[1] 黄进军[1] 崔茂荣[1] 李春霞[1] 侯勤立[1] 

机构地区：[1]西南石油学院石油工程学院,四川南充637001

出　　处：《西南石油学院学报》2000年第3期74-77,共4页Journal of Southwest Petroleum Institute

基　　金：国家 8 63高科技项目!"高性能优质钻井液及完井液研制"( 82 0 0 7 0 1)的部分内容

摘　　要：为了成功地钻探高温超压复杂地层和满足环境保护的需求 ,研究使用抗高温高密度低毒油包水乳化钻井液是非常必要的 ,其中乳化剂的优选和研制是决定钻井液稳定性和抗温能力的关键。利用破乳电压法和离心法评价了乳化剂的乳化效果 ,通过高温陈化评价了乳化液的高温稳定性 ,用自制高温高压电稳定仪测定了乳状液在高温高压下的稳定性。实验确定了以有机酸和有机酰胺为主乳化剂 ,十二烷基苯磺酸纳为辅乳化剂的乳化剂组成 ,并优选了其加量。结果表明所确定的乳化剂配制的乳状液及高密度乳化钻井液具有良好的稳定性和抗温能力。In order to penetrate the formation with high temperature and pressure successfully and protect the environment,it is necessary to study an invert oil-emulsion drilling fluid which can withstand high temperature and has high density and low toxicity. Optimum seeking and development of emulsifiers are very important in stabilizing the drilling fluids and enhancing its property of resisting elevated temperature. In this paper,the emulsification was tested by electrical stability and centrifugal method. Aging or measuring its electrical stability in high temperature and pressure evaluated the temperature stability. It was determined that the emulsifiers are composed of organic acids,amides and alkyl benzene sulfonates(ABS). Results show that the emulsion and high-density emulsion drilling fluid have good stability in elevated temperature.

关 键 词：钻井液 乳化剂 高温 高密度 油包水 低毒性 

分 类 号：TE254.4[石油与天然气工程—油气井工程]