摘要
江西丰城煤层气勘探区长兴组岩溶发育,地层破碎且软硬相间,造成了钻探事故多,生产效率低下,成井质量差等问题。通过介绍气举反循环钻井工艺在该区的应用情况,总结出了操作规程,并对常见的故障原因及解决方法进行了说明。
The karst is very developed in the Changxing Formation, Fengcheng CBM exploration area, Jiangxi; strata are friable and alternating with hard and soft rocks, have caused many drilling accidents, low production efficiency and poor quality of well completion. The paper introduced air-lifting reverse circulation drilling technology in the area, constituted operating instructions and expounded causation and solution of familiar malfunctions.
出处
《中国煤炭地质》
2009年第A01期64-65,共2页
Coal Geology of China
关键词
煤层气
岩溶
气举反循环
操作规程
故障排除
CBM
karst
air-lifting reverse circulation
operation instructions
failure removal
