摘要
煤系地层地热井施工 ,特别是在巨厚煤地层施工中 ,经常出现垮塌、掉块等现象 ,而钻遇裂隙或溶洞后钻井液的大量漏失给钻井安全也造成极大的威胁。介绍了在该类地层中钻探成井时采取的一系列技术工艺措施。
There are some problems such as wall collapse and flaking existing during geothermal well drilling in coal measures layer, particularly in huge coal layer. And it is very dangerous for well drilling when plenty of slurry loses in the crack or cavity layer. This paper introduces a series of technical methods used in drilling and completing geothermal well in such formation.
出处
《探矿工程（岩土钻掘工程）》
2003年第S1期241-243,246,共4页
Exploration Engineering:Rock & Soil Drilling and Tunneling
关键词
煤系地层
地热井
垮塌
漏失
钻探技术
coal measures layer
geothermal well
collapse
lost circulation
drilling technique
