煤层气钻井储层保护新技术研究  

The New Drilling Technique of Formation Protection for Coalbed Methane

作　　者：彭春洋[1] 祁丽莎[1] 柯文丽[1] 游艺[1] 欧阳云丽[1] 

机构地区：[1]长江大学石油工程学院,湖北434023

出　　处：《中国煤层气》2012年第3期35-37,共3页China Coalbed Methane

基　　金：国家重点基础研究发展规划基金资助项目(2008CB211705)

摘　　要：本文分析了我国煤层气勘探开发现状和前景,研究了我国煤层气储层孔隙和裂隙系统特征,分析了煤层气钻井的储层伤害机理。针对煤层气钻井储层保护难点,提出了采用低固相或无固相钻井液、欠平衡钻井技术、屏蔽暂堵技术和加强固相控制等煤层气钻井储层保护技术。This paper firstly analyzes the current situation and prospects of Chinese coalbed methane explo- ration and development, and then studies the coalbed methane reservoir porosity and fracture system character- istics, and analysis reservoir damage mechanism of coalbed methane drilling. Finally, to solve the difficulty of coalbed methane driUing reservoir protection, there are many coal bed methane drilling reservoir protection technology such as low solid or clay free drilling fluid, under balanced drilling technology, temporary plugging technology and the strengthening of the solid phase control.

关 键 词：储层保护 低固相或无固相钻井液 欠平衡钻井 屏蔽暂堵 固相控制 

分 类 号：TE258[石油与天然气工程—油气井工程]