考虑启动压力的致密油水平井分段压裂后渗流规律电模拟  

Electric simulation of seepage flow for tight-oil horizontal well staged fracturing and considering start-up pressure

作　　者：纪国法[1,2,3] 周焱 王苗 许崇祯 Ji Guofa;Zhou Yan;Wang Miao;Xu Chongzhen(Hubei Cooperative Innovation Center of Unconventional Oil and Gas,Yangtze University,Wuhan 430100,China;Key Laboratory of"Oil&Gas Drilling Engineering"of Hubei,Yangtze University,Wuhan 430100,China;Petroleum Engineering College,Yangtze University,Wuhan 430100,China)

机构地区：[1]长江大学非常规油气湖北省协同创新中心,湖北武汉430100 [2]长江大学湖北省页岩气工程技术研究中心,湖北武汉430100 [3]长江大学石油工程学院,湖北武汉430100

出　　处：《能源与环保》2019年第3期64-67,共4页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：长江大学"大学生创新创业训练计划"项目(2017098);国家自然科学基金项目(51804042);湖北省教育厅科学研究计划资助项目(Q20181313)

摘　　要：水平井分段压裂技术是致密油开采获取经济产量的有效手段,同时需克服启动压力后才能保障完整的渗流过程。基于水电相似原理,采用二极管击穿电压模拟致密油启动压力,自研了一套考虑启动压力的致密油水平井分段压裂后渗流规律电模拟装置。通过模拟结果分析,考虑启动压力后,变相地减少了致密油藏供给边界压力;致密油渗流过程压力损耗主要包括启动压力和基质渗流阻力。Horizontal well staged fracturing technology is an effective method to obtain economic output from tight oil reservoir,and the complete seepage process can only be guaranteed after overcoming the start-up pressure.Based on the hydroelectric similarity principle,the diode breakdown voltage is used to simulate the kickoff pressure during tight oil seepage,a set of electrical simulation device has been developed.According to the analysis of the simulation results,considering the start-up pressure,the supply boundary pressure of tight reservoir is reduced in disguised form.The pressure loss mainly includes kickoff pressure and matrix seepage resistance.

关 键 词：致密油 启动压力 电模拟 水平井 分段压裂 

分 类 号：TE357[石油与天然气工程—油气田开发工程]