马达加斯加Sakoa煤田钻探施工技术

Drilling Construction Technology in Sakoa Coalfield of Madagascar

摘要:

介绍了全液压动力头钻机在马达加斯加Sakoa煤田复杂地层钻探施工工艺，施工中克服了绳索取心工艺在破碎、漏失地层中的施工困难，圆满完成了施工任务；另外对比了全液压动力头钻机与立轴钻机的优缺点，简介了国外钻机施工状况。

Abstract:

This article describes the drilling construction process in complex formation of Sakoa coalfield with fully hydraulic driving drill in Madagascar; the construction difficulties in broken and leaking layers were overcome. The comparison was made on the advantages and disadvantages of fully hydraulic driving drill and spindle drill and introduced the construction conditions with foreign drill rig.