樊庄-郑庄区块断层规模对煤层气开发的影响研究

Study on Influence of the Fault Scale on CBM Development in Fanzhuang-Zhengzhuang Block

沁水盆地樊庄-郑庄区块是华北油田开发最早的区块,区域内断层附近井产气效果差异大,低产井多,产气量低。本文通过梳理樊庄-郑庄区块断裂结构,按照断距大小将断层分为Ⅰ、Ⅱ、Ⅲ级,分析不同断层规模对解吸压力的影响,明析了不同类型断层对开发的影响,提出了井位规避风险对策,对煤层气后期开发具有较好的指导作用。

Fanzhuang-Zhengzhuang Block in Qinshui Basin is the earliest development blocks of Huabei Oilfield Company. The gas production effect of CBM wells near the fault is different, with more low pro- duction wells and low gas production volume. The paper combines the fracture structure of Fanzhuang - Zhengzhuang Block, and classifies the faults into Ⅰ, Ⅱ, Ⅲ levels in accordance with the size of the fault displacement. It also analyzes the effect on the desorption pressure for different fault scales, clear the influence on the development for the different types of faults and proposes countermeasures to avoid the risks of well distribution, which will have a guidance for CBM development in the future.