山西沁水煤层气压裂施工的横向效应
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摘要
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.
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.
引文
[1]刘建中.油田应力测量[M].北京:地震出版社,1993.
[2]申卫兵,张保平.不同煤阶煤岩力学参数测定[J].岩石力学与工程学报(增刊),2000,19:860-862.
[3]齐铁新,刘建中,秦桂林.井下裂缝连通技术在安棚碱矿的应用[J].中国工程科学,2006,8(7):63-67.
[2]申卫兵,张保平.不同煤阶煤岩力学参数测定[J].岩石力学与工程学报(增刊),2000,19:860-862.
[3]齐铁新,刘建中,秦桂林.井下裂缝连通技术在安棚碱矿的应用[J].中国工程科学,2006,8(7):63-67.
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