太原理工大学学报

2019, v.50;No.225(05) 611-615

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地下岩体的流动电位研究
Research on Streaming Potential of Underground Rock Mass

张峰;张海发;曾聪;
ZHANG Feng;ZHANG Haifa;ZENG Cong;College of Mining Engineering, Taiyuan University of Technology;Comprehensive Technology Center of Pearl River Water Resources Commission, Ministry of Water Resources;Faculty of Engineering, China University of Geosciences,Wuhan;

摘要(Abstract):

利用室内模拟地层条件下的岩心注液系统及流动电位测试仪,对某中砂岩试件进行了注液实验,研究不同注入压力和不同注入液矿化度下砂岩中流体流动电位的变化规律。为了解地层注水时产生的流动电位的实际情况,进行了小规模的野外中砂岩岩层注水监测实验。室内实验结果表明:砂岩试件注液过程中,流动电位伴随着流体的注入而产生;流体的注入压力越大,注入液矿化度越低,产生的流动电位就越大。野外小型验证实验表明,实际地层注液过程中也产生了流动电位。在石油注液中,可通过对流动电位的监测来实现对流体流态的监测,从而揭示储层地质结构。
The core injection system and streaming potential tester under laboratory simulated formation conditions were used to conduct injection experiments on a medium sandstone specimen, and the variation of fluid streaming potential in sandstone under different injection pressure and solution salinity was studied. In order to verify the actual situation of flow potential generation during field formation water injection, a small-scale water injection monitoring experiment was carried out in the field. Laboratory experimental results show that, the streaming potential of sandstone specimens is accompanied by the injection process, and with the increase of fluid injection pressure, the streaming potential increases obviously. The field experiments show that the streaming potential is accompanied by the actual injection process also. The higher the surface injection pressure is, the lower the salinity of the injection solution is, and the more obvious the streaming potential is. The research results have a positive effect on improving the efficiency of oil exploitation and saving the comprehensive cost.

关键词(KeyWords): 岩体;流动电位;注入压力;矿化度;油田开发
rock mass;streaming potential;injection pressure;salinity;oil recovery

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作者(Author): 张峰;张海发;曾聪;
ZHANG Feng;ZHANG Haifa;ZENG Cong;College of Mining Engineering, Taiyuan University of Technology;Comprehensive Technology Center of Pearl River Water Resources Commission, Ministry of Water Resources;Faculty of Engineering, China University of Geosciences,Wuhan;

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