筠连煤层气气藏地质特征及产气规律

China Coalbed Methane(2020)

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Abstract
筠连煤层气田构造位于四川盆地南缘,主要发育二叠系乐平组高阶煤层,为海陆交替的潮坪相沉积,煤层具有连续性好,单层厚度薄的特点,在煤层沉积后由于受到燕山及喜山多期构造运动影响,区块内具有构造类型多、局部断裂发育的特点,具有明显的先沉积、后断裂的地质特征.本文通过区域内不同构造类型的生产井的产气情况分析,总结了背斜、向斜及单斜等构造类型下煤层井的产气规律.
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