东庞矿奥灰含水层多分支水平孔卡埋钻事故处理

近年来，随着定向钻进技术的不断发展，随钻测量技术和受控定向螺杆钻具的制造工艺日趋成熟。地面定向水平钻孔在石油、天然气、页岩气、盐矿等领域得到广泛应用。地面定向水平分支孔注浆在煤矿防治水领域的应用开始大面积推广，在钻进过程中经常发生各种各样事故，造成大量的人力、物力、财力的损失，甚至导致全孔报废及人员伤亡。因此，如何减少或是避免事故的发生，保证钻进工作的顺利进行，是当前面临的重要课题。本文结合冀中能源股份有限公司东庞矿9400采区奥灰含水层区域注浆改造一期工程钻探工程DB2-E3地面定向水平孔施工时发生卡埋钻事故成功处理的实例，总结了水平注浆孔卡埋钻事故预防措施，对水平孔安全施工具有一定参考意义。

Treatment of the drill rod sticking and burying incident in a multi-branch horizontal drilling in the Ordovician limestone aquifer of Dongpang Mine

In recent years, with the continuous development of directional drilling technology, measurement while drilling (MWD) technology and the manufacturing process of controlled directional positive displacement motor (PDM) drill have become increasingly mature. Surface directional horizontal drilling is widely used in oil, gas, shale gas, salt and other fields. The application of surface directional horizontal branch hole grouting to prevention and control of water in coal mines has been widely promoted. In the drilling process, various incidents cause a large number of human, material and financial losses, and even lead to the abandonment of the whole well and casualties. Therefore, taking proper measures to reduce or avoid incidents and ensure the smooth progress of the drilling work is an important task for drilling engineering. In this paper, in the context of successful treatment of the drill rod sticking and bruying incident during drilling the DB2-E3 directional horizontal well in the first stage of grouting transformation of the Ordovician limestone aquifer in the 9400 mining area of Dongpang Mine by Jizhong Energy Resources Co., Ltd., the preventive measures of the drill rod sticking and bruying incident in the horizontal grouting hole are summarized, providing some guide for the safe construction of the horizontal well.