赵志平, 官大勇, 刘朋波, 任健, 马佳国. 蓬莱19-3油田西北斜坡带构造特征及控藏作用[J]. 海洋地质前沿, 2019, 35(3): 59-67. DOI: 10.16028/j.1009-2722.2019.03007
    引用本文: 赵志平, 官大勇, 刘朋波, 任健, 马佳国. 蓬莱19-3油田西北斜坡带构造特征及控藏作用[J]. 海洋地质前沿, 2019, 35(3): 59-67. DOI: 10.16028/j.1009-2722.2019.03007
    ZHAO Zhiping, GUAN Dayong, LIU Pengbo, REN Jian, MA Jiaguo. STRUCTURAL FEATURES OF THE NORTHWEST SLOPE ZONE OF PENGLAI 19-3 OILFIELD AND THEIR CONTROLLING OVER HYDROCARBON ACCUMULATION[J]. Marine Geology Frontiers, 2019, 35(3): 59-67. DOI: 10.16028/j.1009-2722.2019.03007
    Citation: ZHAO Zhiping, GUAN Dayong, LIU Pengbo, REN Jian, MA Jiaguo. STRUCTURAL FEATURES OF THE NORTHWEST SLOPE ZONE OF PENGLAI 19-3 OILFIELD AND THEIR CONTROLLING OVER HYDROCARBON ACCUMULATION[J]. Marine Geology Frontiers, 2019, 35(3): 59-67. DOI: 10.16028/j.1009-2722.2019.03007

    蓬莱19-3油田西北斜坡带构造特征及控藏作用

    STRUCTURAL FEATURES OF THE NORTHWEST SLOPE ZONE OF PENGLAI 19-3 OILFIELD AND THEIR CONTROLLING OVER HYDROCARBON ACCUMULATION

    • 摘要: 为探索蓬莱19-3油田西北斜坡带的勘探潜力,根据邻区已钻井和精细的地震资料解释,采用断裂几何样式分析及构造恢复方法对蓬莱19-3油田西北斜坡带的断裂成因、构造演化及其控藏作用进行分析。结果显示:在平面上主要发育NE(NNE)向及NW(近EW)向断层,其走向、倾向及垂向上的搭接关系主要受区域应力及地层厚度等因素控制,在不同构造部位体现不同的特征。揭示了3个关键期区域构造应力在本区的叠加,即早白垩世(燕山期中期)的拉张,始新世晚期的右行走滑及上新世—第四纪新构造运动的拉张。早白垩世发育的基底先存断裂控制了古构造脊的形成,为本区油气横向输导提供必要条件,上新世—第四纪新构造运动发育的贯通式切脊断裂是油气的垂向运移的有利通道,其活动期是渤海重要的成藏期,预示本区具有良好的勘探潜力。

       

      Abstract: In order to assess the hydrocarbon potential in the northwest slope zone of the Penglai 19-3 Oilfield, well data and seismic data have been collected to study the fracture characteristics, tectonic evolution and reservoir formation history through fault geometry description and tectonic reconstruction. Results show that the trend, dip direction and bonding relation of the NE(NNE)and NW(nearly EW)trending faults are mainly dependant on regional stress and stratigraphic thickness, as well as tectonic positions. As far as the superposition of regional stress is considered, there are three key periods, i.e. pulling apart in early Cretaceous(Yanshanian period), dextral strike-sliping in late Eocene and pulling apart by neotectonic movement from Pliocene to Quaternary. Structural ridges are controlled by pre-existing basement faults in early Cretaceous, which created necessary conduits for hydrocarbon transverse migration. Drive-through type fault on structural ridge developed by neotectonic movement from Pliocene to Quaternary acts as favorable pathways for vertical migration of hydrocarbon. The active stage is also the important hydrocarbon accumulation period in Bohai, suggesting great potential for hydrocarbon exploration.

       

    /

    返回文章
    返回