摘要
经济社会不断发展,科学技术有很大程度创新和发展。煤层气是经济社会发展中的重要能源,可以替代天然气,具有良好利用价值。煤层钻井工作也在随之开展。通常煤层气井储层一般在1000m内,但储层含水量相对较高,且在钻井过程中因结构相对脆弱容易出现坍塌事故,带来煤气层污染问题,与此同时会出现煤层压力系统变化,如果出现裂缝,会给煤层带来损坏。因此,必须采取有效措施,重视做好煤层气井储层保护钻井工艺研究。
With the continuous development of economy and society,science and technology have been innovated and developed to a great extent.Coalbed methane is an important energy source in economic and social development,which can replace natural gas and has good utilization value.Coal seam drilling work is also carried out.Generally,the coalbed methane reservoir is within 1000m,but the water content of the reservoir is relatively high.In the process of drilling,due to the relatively fragile structure,it is easy to collapse,resulting in gas pollution.At the same time,there will be changes in the coal seam pressure system.If there are cracks,it will cause damage to the coal seam.Therefore,it is necessary to take effective measures and pay attention to the research on the drilling technology of coalbed methane wells reservoir protection.
作者
张全盛
和喜军
ZHANG Quan-sheng;HE Xi-jun(Henan Coalfield Geological Bureau Four Teams,Zhengzhou 450000,China)
出处
《工程建设与设计》
2020年第13期202-204,共3页
Construction & Design for Engineering
关键词
煤层气井
储层保护
钻井工艺
coalbed methane wells
reservoir protection
drilling process
