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以禾草沟煤矿为例,介绍了煤矿井田内废弃油气井的探测方法,在此基础上,详细说明了采用“油气水层封堵、井筒裸眼段封堵、井口封堵”的技术方法,以及“初步调研分析诊断、表套固化、专业通井、钻头调配、井筒检测、分段封堵和施压验收”等7个环节,完成封堵治理全过程。最后给出了采掘工作面过油气井的安全技术措施。
Taking Hecaogou Coal Mine as an example, the detection methods of abandoned oil and gas wells in coal mine fields are introduced. On this basis, the technique of “plugging of oil-gas-water layer, plugging of open-hole sections in the wellbore and plugging of the wellhead” is described in detail Method, and “preliminary investigation and analysis of diagnosis, sleeve curing, professional through well, drill deployment, wellbore detection, sub-blockage and pressure acceptance” and other seven areas, complete the entire process of closure management. Finally, the safety technical measures of mining face through oil and gas well are given.