LIANG Zhengzhong, YUAN Bo, CHANG Zhenheng, SUN Zhaoyong. DISTRIBUTION OF EVAPORITES AND OVER-PRESSURED RESERVOIRS IN THE SHAHEJIE FORMATION IN THE EASTERN WENLIU AREA, DONGPU DEPRESSION, BOHAI BAY BASIN[J]. Marine Geology Frontiers, 2011, 27(10): 22-26.
Citation: LIANG Zhengzhong, YUAN Bo, CHANG Zhenheng, SUN Zhaoyong. DISTRIBUTION OF EVAPORITES AND OVER-PRESSURED RESERVOIRS IN THE SHAHEJIE FORMATION IN THE EASTERN WENLIU AREA, DONGPU DEPRESSION, BOHAI BAY BASIN[J]. Marine Geology Frontiers, 2011, 27(10): 22-26.

DISTRIBUTION OF EVAPORITES AND OVER-PRESSURED RESERVOIRS IN THE SHAHEJIE FORMATION IN THE EASTERN WENLIU AREA, DONGPU DEPRESSION, BOHAI BAY BASIN

More Information
  • Received Date: May 10, 2011
  • Two thick sequences of evaporites consisting of gypsum and halite occur in the Paleogene Shahejie Formation of the eastern Wenliu Area, Dongpu Depression, Bohai Bay Basin. On the plane view, the distribution pattern of the evaporites is different from region to region, mainly depending upon the frequently shifting of depocenters with time. Statistics of the measured pressures suggest that the formation pressure of the Shahejie Formation shows a "double layer structure" consisting of upper normal pressure and lower abnormal high pressure. Very high abnormal pressure mainly occurs in the middle and lower part of the 3rd member of the Shahejie Formation. The top surface of the over-pressured zone ranges from 2 900 to 3 100 m in depth and gradually rises up from the west to the east. Formation pressure is closely related to the tectonic structure and depocenter. The occurrence of abnormal pressure matches well with distribution of the evaporite rocks. It suggests that the evaporite sequences act as seals of both pressure and physical property. The double seal mechanism is the key element to the formation of the abnormal pressure in the Dongpu Depression. The evaporite sequences and overpressure have great significance to the origin of hydrocarbon reservoir and the oil and gas accumulation.
  • Related Articles

    [1]WU Bin. Geological architecture and tectonic evolution of Liaodong-Bodong Uplift tectonic belt, Bohai Bay Basin[J]. Marine Geology Frontiers, 2024, 40(7): 25-35. DOI: 10.16028/j.1009-2722.2023.243
    [2]ZHANG Li'an, LI Chao, ZHANG Lan, CUI Mingzhe, MA Dong. Reservoir characteristics and 3D geological modeling of igneous rock area in Huanghekou Sag A Oilfield, Bohai Bay Basin[J]. Marine Geology Frontiers, 2023, 39(1): 31-39. DOI: 10.16028/j.1009-2722.2022.133
    [3]ZHANG Li'an. Petroleum geological characteristics and hydrocarbon accumulation models of the Kenli A Oilfield, Bohai Bay Basin[J]. Marine Geology Frontiers, 2022, 38(4): 63-70. DOI: 10.16028/j.1009-2722.2021.268
    [4]LI Xinqi, GAO Lei, HUANG Zhi, WANG Mingchun, HU Anwen. STRUCTURAL CHARACTERISTICS AND EVOLUTION OF THE SHANAN SAG OF BOHAI GULF BASIN[J]. Marine Geology Frontiers, 2019, 35(11): 19-27. DOI: 10.16028/j.1009-2722.2019.11004
    [5]LI Tingli, HAN Jianbin, LIANG Shihao, MENG Yuntao, WU Rui. DISTRIBUTION PATTERN OF THE MEANDERING RIVER RESERVOIR:A CASE FROM THE P OILFIELD IN BOHAI[J]. Marine Geology Frontiers, 2018, 34(12): 39-46. DOI: 10.16028/j.1009-2722.2018.12005
    [6]LV Rui, LIU Zengqin. RESERVOIR CHARACTERIZATION METHODS FOR FLUVIAL RESERVOIR AND THEIR IMPACT ON OIL FIELD DEVELOPMENT: A CASE FROM RESERVOIR A OF BZ OIL FIELD, BOHAI BAY BASIN[J]. Marine Geology Frontiers, 2018, 34(11): 46-51. DOI: 10.16028/j.1009-2722.2018.11007
    [7]ZHANG Bao, WANG Guanmin, FU Yao, LI Jiawei, XIONG Zhouhai. PALEOGENE VALLEY SYSTEM AND ITS CONTROL ON PROXIMAL CLASTIC DEPOSITS IN THE SOUTHERN SUB-SAG OF MIAOXI SAG, BOHAI BAY BASIN[J]. Marine Geology Frontiers, 2017, 33(12): 37-45. DOI: 10.16028/j.1009-2722.2017.12005
    [8]ZHANG Nianli, LI Shuanglin, CHENG Rihui, GONG Jianming, DONG Heping. APPLICATION OF φiC4nC4 AND φiC5nC5 TO THE MIDDLE BOHAI BAY BASIN[J]. Marine Geology Frontiers, 2015, 31(12): 52-57. DOI: 10.16028/j.1009-2722.2015.12007
    [9]FU Zhaohui, SHI Minghua, QIN Weijun, LI Min. STRUCTURAL STYLE OF A TENSO-SHEAR FAULT BASIN[J]. Marine Geology Frontiers, 2012, 28(10): 1-9.
    [10]LI Jianwei, WU Jianzheng, HU Rijun, ZHU Longhai, ZHANG Likui. THE DISTRIBUTION PATTERN OF SURFICIAL SEDIMENTS IN SOUTHWEST BOHAI BAY[J]. Marine Geology Frontiers, 2011, 27(9): 11-17.

Catalog

    Article views (156) PDF downloads (7) Cited by()

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return