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OALib Journal期刊
ISSN: 2333-9721
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复杂构造区高演化程度海相页岩气勘探突破的启示——以四川盆地东部盆缘jy1井为例
Keywords: jy1井,龙马溪组,页岩气,保存条件,复杂构造,高演化程度
Abstract:
？四川盆地东部盆缘jy1井龙马溪组页岩测试获得高产工业气流，经过长时间试采，压力、产量稳定，实现了南方复杂构造、高演化程度海相页岩气的战略突破。通过对jy1井构造、岩性与龙马溪组toc、热演化程度及矿物含量特征的分析，结合区域地质资料，得到如下启示:①与北美地区不同，在多期构造演化和抬升剥蚀背景下，构造与保存条件是页岩气富集成藏的首要条件;②龙马溪组只有下部优质烃源岩才起到滑脱作用，多期层滑和构造作用形成的网状裂缝是页岩气富集高产的关键;③上奥陶统灰岩为龙马溪组页岩气的形成起到了良好的封隔作用;④与常规气藏不同，断裂和抬升的破坏作用对优质页岩层系的影响相对较弱，对南方广大地区页岩气的勘探具有示范意义。
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