岩性油气藏 ›› 2015, Vol. 27 ›› Issue (2): 2630.doi: 10.3969/j.issn.1673-8926.2015.02.005
高长海1,查 明1,赵贤正2,彭 浦3
GAO Changhai1, ZHA Ming1, ZHAO Xianzheng2, PENG Pu3
摘要:
冀中坳陷潜山具有多期构造运动和储层非均质性强等特征,油气输导体系一直是该类油气藏研究的难点,成为制约潜山勘探的主要因素之一。 通过分析中元古代以来的构造格架、沉积充填和油藏特征等,认为冀中坳陷潜山主要发育断层、不整合以及碳酸盐岩储集层等 3 种油气输导类型,其中断层和不整合共同构成了潜山油气藏的主要输导体系,并与碳酸盐岩储集层一起控制了潜山的油气运移与成藏。 依据断层和不整合对油气输导作用的大小,将冀中坳陷潜山油气藏输导体系组合划分为断层主导型、不整合主导型及断层-不整合复合型这 3 种类型,结合潜山区带分布及构造特征的差异性,建立了断阶带、斜坡带和中央隆起带 3 种潜山油气成藏模式,其中断阶带和斜坡带将是今后潜山勘探的重点区带。
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