摘要
辽东湾为北北东向凹凸相间的构造格局，具裂谷盆地演化特征，基底是太古界变质岩系和中生界火山岩系。地层层序自下而上依次是沙河街组三段、二段、一段和东营组，由湖泊、三角洲、扇三角洲、湖底扇、重力流水道、碳酸盐台地和风暴等七种沉积相组成，可概括为９种沉积体系。深度控制成岩作用，而成岩作用又控制储层分布。研究结果表明，不同构造带上的成岩深度不同，同一构造带不同抬升部位的成岩深度也不同。如辽西低凸起镜质体反射率Ｒ０为０５％的埋深，不同井的成岩深度相差７７０ｍ。而在辽东凸起同样埋深下，不同井的成岩深度可相差１２００ｍ。
Liaodong bay has the structural frame works with sags and highs of NNEdirection,and has the evolutional characterization of faulted basin。Its basement rocks aremetamorphic rocks of Archaeozoic and Volcanics of Mesozoic,From bottom to top, itsformational sequcnce is Sha- 3.Sha- 2and Sha- 1Members of Shahejie Formation andDongying Formation。Liaodong Bay consists of seven sedimentarv facies:lacus delta,fandelta,sublacustrine.gravity flow channels.carbonate platform and storm facies.which canbe summarized into nine deposition systems。Depth controls diagenesis which can control thedistribution of reservoir. The result of the study indicates that not only different structuralbeIts but also different uplift blocks in the same structural belts have different diageneticdepth。
出处
《石油大学学报（自然科学版）》
CSCD
1994年第1期1-9,共9页
Journal of the University of Petroleum,China(Edition of Natural Science)
关键词
沉积
微相
成岩作用
储集层
油气藏
Faulted basin:Micro-sedimentary facies:Diagenesis:Reservoir
