摘要
以沁水盆地煤层气田樊庄区块多分支水平井开发实践为基础,对煤层气水平井开发生产规律进行研究。本文首先分析水平井适应的地质条件,研究发现樊庄区块拉张区水平井产气能力最高,平衡应力区次之,而挤压区最差。然后通过生产数据统计分析,认为煤层气水平井单位面积产水指数、采气速度两个开发指标与产气量存在较强的关联性,煤层气产气较高的水平井单位面积产水指数一般小于50,且其采气速度控制在5%左右。
Based on the development practice of CBM multi-lateral horizontal wells in Fanzhuang Block of Qinshui Basin,the paper studies the development laws of CBM horizontal wells.It analyzes the geologic conditions which adapt to CBM horizontal wells,and figure out that the tension area has the highest gas deliverability,the balanced area follows,and the compressed area is the worst.Through the analysis of production data statistics,it proposes that water productivity index and gas production rate have strong relation with the gas production.Generally,the water productivity index of highly-productive CBM horizontal well is less than 50,and its gas production rate is controlled by around 5%.
出处
《中国煤层气》
2016年第5期12-14,共3页
China Coalbed Methane
基金
国家重大专项"山西沁水盆地煤层气水平井开发示范工程"(2011ZX25061)
关键词
煤层气
应力
连通性
产水指数
采气速度
Coalbed methane
stress
connectivity
water productivity index
gas production rate