四川叙永河坝煤田单点照相定向钻进技术

Directional Drilling Technology with Single Shot Camera in Xuyongheba Coalfield

四川叙永河坝煤田勘探中,多数钻孔岩层倾角在75°以上,部分钻孔岩层倾角甚至达到89,°给勘探工作带来了极大的困难。针对这一情况,采用全套单点照相定向钻进专用设备,通过认真设计,精心施工,所有试验钻孔在仪器的监控下顺利进入煤层,取得了预期的效果。结合ZK69-22孔的施工,阐述了煤田勘探在急倾斜岩层中遇到的困难和解决措施,介绍了单点照相定向钻进技术在煤田勘探中的成功应用。

In Xuyonggeba coalfield exploration, the majority of stratum inclination was 75 degrees, some even to 89 degrees, directional drilling equipment with single shot camera was applied. The paper expounded the difficulties of coalfield exploration in steep rock formation and the solving methods with the case of hole ZK69 - 22 construction, and introduced the successful application of directional drilling technology with single shot camera in coalfield exploration.