摘要
低压、低渗煤岩气藏钻井完井作业过程中储层损害严重,严重制约气藏开发成功率。提高煤岩气井单井产能,增大开采效益,必须避免或降低储层损害。介绍了煤岩储层特性,分析了煤岩储层损害机理,指出煤岩储层保护应以保护裂隙为主,总结了保护储层的钻井工艺,钻井液技术及压裂增产措施。提出推进煤岩气藏勘探开发水平的提高,必须重视煤岩储层损害机理及保护技术的的研究。
Formation damage is very serious when drilling in coal bed gas reservoirs with characters of low pressure and low porosity, which can seriously affect the success rate of gas reservoir development. In order to enhance the coal bed gas well productivity and increase the development efficiency, it must get rid of reservoir formation damage. The paper introduced the coal bed reservoir features, analyzed its damage mechanisms and pinpointed that the main work on coal bed reservoirs damage control was to protect the cracks. It also summarized the protection technologies such as drilling operations, drilling fluid and fractured stimulation treatments. It emphasized that there should pay more attention to research on damage mechanisms and protection technologies so as to enhance develop efficiency of coal bed gas reservoirs.
出处
《西部探矿工程》
CAS
2010年第3期107-109,112,共4页
West-China Exploration Engineering
关键词
煤岩气藏
储层保护
钻井
完井
增产
cold bed gas reservoir
reservoir formation damage control
drilling well
completion well
stimulation treatments
