摘要
超深(> 4 000m)、高温(> 150℃)、高硬度(摩氏硬度> 7)、易失稳地层中干热岩的成井工艺在国内仍存在诸多技术难点。通过正在顺利高效实施的青海贵德干热岩井钻探示范工程,分析探讨了干热岩井取心工具优选、抗高温钻井液配比和高温固井工艺等关键技术,旨在为我国干热岩开发利用中钻井技术难点的攻关提供一定借鉴。
The well completion technology of hot dry rock in ultra deep （〉4 000m）, high temperature （〉150℃） and high hardness （Mohs hardness 〉7） unstable strata still has many technical difficulties. Through the hot dry rock well drilling demonstration project in Guide, Qinghai is being implemented smoothly and efficiently, analyzed and discussed key technologies of hot dry rock well coring tool optimization, high temperature resistant drilling fluid proportioning and high temperature cementing etc. aimed at to provide certain reference for drilling technical difficulties tackling in hot dry rock exploitation and utilization in the country.
作者
许超
Xu Chao(The First Hydrogeological Exploration Team,CNACG,Handan,Hebei 05600)
出处
《中国煤炭地质》
2018年第A01期94-96,104,共4页
Coal Geology of China
关键词
高效破岩
抗高温钻井液
固井工艺
high efficient rock crushing
high temperature resistant drilling fluid
well cementing technology
