东濮断陷含油气系统分析与勘探发现Analysis of Petroleum System and Discovery of Oil and Gas in Dongpu Depression
张亚敏;陈发亮;
摘要(Abstract):
运用含油气系统理论研究了东濮断陷含油气系统,提出了"纵向分层、横向分洼、洼中分层"的新思路,将东濮断陷含油气系统精细划分为4个级别:东濮断陷含油气系统为一级,是以古近系沙河街组(Es)为烃源岩,以三叠系(T)和Es为储层,即Es—T、Es的含油气系统。指出二级系统Es3—T、Es4、Es3、Es2为主力含油气系统,前梨园、濮城等主力生油洼陷中Es3—T、Es4、Es3、Es2三级含油气系统是油气勘探的靶区。油气勘探实践在一度认为没有油的地方取得了突破,发现了新层系、新类型和高产稳产区块。在濮城洼陷以Es43亚段为烃源岩的Es43-T、Es4、Es3、Es2四级含油气系统中,位于北部中央隆起带的文明寨、卫城地垒上新探明了三叠系致密砂岩裂缝油气田,其裂缝含油,基质不含油,裂缝的规模具有一定的尺度,既为油气渗流通道,也能作为油气的储集空间,探明规模储量数百万吨,突破了渤海湾盆地的找油模式,丰富了油气藏类型,该勘探和研究对东部老油区的挖潜勘探将会有所借鉴。
关键词(KeyWords): 半地垒(地垒);有效烃源岩;含油气系统;东濮凹陷;渤海湾盆地
基金项目(Foundation): 中国石油化工集团公司“十五”重大科技攻关项目(P03039)
作者(Author): 张亚敏;陈发亮;
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DOI:
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