阿布力米提·依明,唐勇,曹剑,陈刚强,陈静,陶柯宇
Ablimit·Imin,Tang Yong,Cao Jian,Chen Gangqiang,Chen Jing,Tao Keyu
摘要:
准噶尔盆地玛湖凹陷下三叠统百口泉组最近发现了该盆地首个源外“连续型”大型砂砾岩油气藏,展示出重要的典范研究意义。为及时丰富成藏理论与勘探实践,分析了成藏机理与富集规律。结果表明:百口泉组“连续型”油气成藏具有三大有利条件:资源基础好、储层和顶底板条件佳、油气充注和成藏演化配置好,这是油气能够源外大规模“连续型”成藏的机理。其富集规律与特色有三:优质湖相烃源岩提供了资源基础、沟通烃源和储集岩系的走滑断裂使得油气能够源外成藏、扇三角洲沉积体系提供了优越的储层与油气“连续型”分布条件。油气富集表现为“三元”控制:扇三角洲前缘沉积相带、构造鼻凸、断裂;此外,异常高压和裂缝对油气高产具有重要影响;这些多因素叠合之处为油气下步勘探的有利目标。
中图分类号:
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