山西沁水煤层气压裂施工的横向效应

Horizontal effects in fracturing operation of coal bed methane in Qinshui,Shanxi Province

介绍了在山西沁水盆地煤层气压裂时监测到的压裂施工的横向效应,监测使用微地震方法。发现沿人工裂缝法向方向的邻井在施工时出现气量减少、枯竭、出水等反应,沿人工裂缝走向方向的邻井反应滞后。这一发现使笔者注意到煤层气压裂施工的横向挤压作用可能即时影响邻井产量,压裂设计时应该注意到这一反应的不良影响。

This paper describes horizontal effects of CBM （coal bed methane）fracturing, obtained from microseismic monitoring in Qinshui Basin. It indicates that adjacent wells perpendicular to man-made fractures have adverse effects, including reduced production flow rate, depletion, and watering during fracturing operation simultaneously, while wells along man-made fractures response lag. This discovery shows that the horizontal compression of fracturing could have adverse impact on production of adjacent wells, and fracturing designer should be aware of it.