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从构造演化、油源、圈闭、砂体展布与储集层条件、成藏关键时刻的配套、异常地层压力等方面 ,阐述黄骅坳陷北塘凹陷地质特征及其形成油气藏的基本地质条件 ,认为该区主要存在 3种含油组合 :以塘沽、新村、炮台等构造为代表的自生自储型含油组合 ,以新港构造为代表的古生新储型含油组合 ,新港南—海河断层下降盘中浅层含油组合。该区油气分布规律是 :油层纵向分布受储盖组合与构造活动共同控制 ;油气平面分布受烃源岩控制 ,生油凹陷区油气富集程度较高 ;古构造倾没部位油气富集程度较高 ;海河、塘北等大断层控制构造形成与发育 ,控制油气富集与高产 ;北西向断层控制局部构造圈闭的形成和发育 ,对北西轴向的油气藏平面分布具有重要的控制作用。图 4参 3 (邓荣敬摘 )
From the aspects of tectonic evolution, oil source, traps, sand body distribution and reservoir conditions, supporting of key moment of formation and abnormal formation pressure, the geological characteristics of Beitang Sag in Huanghua Depression and its basic geology Conditions that there are mainly three kinds of oil-bearing assemblage in this area: the spontaneous self-storage-type oil-bearing assemblage represented by Tanggu, Xincun, Fort and other structures, the Paleozoic oil-bearing oil-bearing combination represented by Newport structure, and the decline of Xingangnan-Haihe fault Dish shallow oil combination. The distribution pattern of oil and gas in this area is as follows: the vertical distribution of oil layers is controlled by the combination of reservoir-cap assemblage and tectonic activity; the distribution of oil-gas planes is controlled by source rock and the degree of oil and gas enrichment in oil-producing depression is higher; High; the formation and development of large fault control structures such as Haihe River and Tangbei, controlling the enrichment and high production of oil and gas; controlling the formation and development of local structural traps in the NW strike control plays an important role in controlling the plane distribution of oil and gas reservoirs in the northwest axis. Figure 4 Senate 3 (Deng Rong Jing pick)