1 Technical Department of China National Offshore Oil Corporation LimitedTianjin, Tanggu300452, Tianjin
2 Research Center of China National Offshore Oil Corporation, Beijing100027
3 School of Energy,China University of Geosciences(Beijing), Beijing100083
As an important part of continental rift lacustrine basin, the structural zones of the basin margin which are usually located close to the hydrocarbongenerating center, are important petroliferous belts in the continental rift lacustrine basin. In the Bohai Sea area, the structural styles of the Paleogene lacustrine basin margin can be divided into two types: extensional lacustrine basin margin and strike slipping lacustrine basin margin and the former one is further subdivided into the steep slope faulted lacustrine basin margin, the gentle slope faulted lacustrine basin margin, the simple gentle slope lacustrine basin margin and the axial slope lacustrine basin margin. The extensional lacustrine basin margin is widely distributed in the large sags of the study area, while the strike slipping one is developed in the eastern area of the basin and is mainly controlled by the TanchengLujiang faulted belt. Due to the differences of the structural movements, the structural evolution of different lacustrine basin margins, the palaeogeomorphology, the accommodation variation and the sedimentary base level changes are different. As a result, different lacustrine basin margins with different structural styles have different sedimentary sequence filling models. The analyses of the control of lacustrine basin margin structural styles on sequence filling are very important for reservoir delineation and prediction of lithologic traps.
About author: Xu Changgui, born in 1971, is a senior engineer. He is mainly engaged in researches of petroleum geology and exploration.
Email:xuchg@cnooc.com.cn.
Cite this article:
. Structural styles of the Paleogene lacustrine basin margin and their control on sedimentary sequences in Bohai Sea area[J]. JOURNAL OF PALAEOGEOGRAPHY, 2008, 10(6): 627-635.
. Structural styles of the Paleogene lacustrine basin margin and their control on sedimentary sequences in Bohai Sea area[J]. JOPC, 2008, 10(6): 627-635.