郑庄区块非自然下降井原因分析及对策研究

Analysis and Countermeasure Research of Non-natural Decline Wells in Zhengzhuang Block

沁水盆地南部郑庄区块是我国煤层气开发利用最为成功的地区之一,但随着多年的开发,部分单井暴露出含气量高、采出程度低、产气衰减快等问题,本文针对性地开展非自然下降井的地质、压裂、排采资料的理论研究,提出稳产增产措施,研究成果可有效指导其它类似区块煤层气开发。

Zhengzhuang Block in the south of Qinshui Basin is one of the most successful areas for coalbed methane exploitation and utilization in China. However, with years of development, some single wells are exposed to problems such as high gas content, low recovery degree and rapid gas production decay. This paper conducts theoretical research on the geology, fracturing and drainage data of the non-natural decline wells, and proposes measures for stable production and production increase. The research results can effectively guide the coalbed methane development in other similar blocks.