在煤层的开采过程中,需要深入了解钻井对煤层储层造成的伤害,在对伤害机理形成正确的认识后,才能指导相关工作安全、有序的开展。本文以煤层气钻井过程中储层伤害及保护为研究对象,分析当前我国在煤层气钻井过程中对储层的伤害情况,从钻井技术与钻井液两个方面改进,实现在煤层气钻井过程中对储层的有效保护。 During the process of coal seam mining, it is necessary to understand deeply the damage caused by drilling on the coalbed reservoir. Only after the correct understanding of the damage mechanism can we guide the relevant work to be carried out in a safe and orderly manner. In this paper, the harm and the protection of reservoir during CBM drilling process are studied, and the damage to reservoirs in CBM drilling process in China is analyzed. From the aspects of drilling technology and drilling fluid, the paper improves the CBM drilling process Effective protection of the reservoir.