三元复合驱采出液导电特性测试与分析  

Test and Analysis of Electrical Conductivity for ASP Flooding Produced Fluid

作　　者：陈曦 王金龙[2] 王瀛[3] 

机构地区：[1]辽宁石油化工大学石油天然气工程学院 [2]大庆油田工程有限公司 [3]大庆油田力神泵业有限公司

出　　处：《油气田地面工程》2018年第2期17-19,23,共4页Oil-Gas Field Surface Engineering

摘　　要：为有效解决电脱水器运行不平稳问题,需掌握三元复合驱采出液的导电特性,为此选择了一个有代表性的三元复合驱试验区定期取样,测试采出水的电导率、乳化原油的击穿场强和电脱水泄漏电流。结果表明:试验区采出水的电导率由3.22 m S/cm最高升至9.87 m S/cm;乳化原油的击穿场强由2.32 k V/cm降至0.81 k V/cm;原油电脱水的电流由简单的单峰波形变为复杂的多峰波形。分析三元复合驱采出液导电性增强的原因和对原油脱水的不利影响,提出了优选电脱水工艺参数、改进电脱水器本体设计及研制大容量高性能电脱水器供电装置的应对措施。In order to effectively solve the problem that the electric dehydrator cannot operate smoothly, it is necessary to master the electrical conductivity of the ASP flooding produced fluid.Therefore, the conductivity of the produced water, the breakdown field strength of emulsified crude oil and the leakage current of electric dehydration are tested through regular sampling in a representative ASP flooding experiment block. Results showed that the conductivity of the produced water is increased from 3.22 m S/cm to 9.87 m S/cm, the breakdown field strength of emulsified crude oil is reduced from 2.32 k V/cm to 0.81 k V/cm, and the current of the crude oil electric dehydration is changed from simple single-peak waveform into complex multi-peak waveform. The reasons for the high conductivity of ASP flooding produced fluid and its adverse effects on the crude oil dehydration are analyzed. Then counter measures are recommended to optimize the process parameters of electric dehydration, improve the design of the electric dehydrator and develop the crude oil dehydration power supply device with large capacity and high performance.

关 键 词：三元复合驱 采出液 电脱水器 脱水 导电性 电流 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]