地质导向技术在煤层气开发中的应用

传统的煤层气开采方式为地面直井排水降压开采,但这种方式开采煤层气单井产量低、经济效益比较差。采用水平井开发煤层气能够增加区块煤层控制面积,提高单井产能。目前沁水盆地北部煤层气开发已布置多口U型开发井。为了实现低成本高效开发,随钻测井参数仅有方位伽马。通过采用地质导向技术,保证水平井水平段轨迹钻入目标煤层内,提高煤层钻遇率。

Application of Geosteering Technology in the Exploitation of Coal Bed Methane

The traditional way of exploitation of coal bed methane is the ground straight well drainage depressurizing exploitation, which is of low well production rate and relatively poor economic benefits. Using horizontal wells to develop coal bed methane can increase the control area of block coal seams and improve well productivity. Many U-shaped development wells has been arranged in the development of coal bed methane in north of Qinshui Basin currently. In order to achieve low cost and efficient development, there is only bearing gamma in LWD parameters. By using geosteering technology, it is ensured that the trajectory of horizontal section of horizontal wells can be drilled into the target coal seams, and the drilling rate in coal seams can be improved.