潘庄煤层气区块3号煤层压裂裂缝延展特征

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压裂裂缝延展特征对煤层气开发效果具有重要影响,是压裂方案设计及优化、井网布置和井间距确定等的重要参数。文章以潘庄煤层气区块为工程背景,对区块3号煤层压裂裂缝延展特征进行了研究。结果表明,受水平主应力控制,裂缝以水平裂缝为主,垂直裂缝次之,裂缝延展优势方位为NNE13~NE58°。裂缝总长度131.5~192.6 m,平均153.4 m;裂缝高度16.7~29.2 m,平均21.5 m。压裂液总量及排量对裂缝总长具有重要控制作用,具有显著的线性正相关性,同时,压裂裂缝延展特征受多地质要素、储层物性
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