Oil & Gas Geology ›› 2008, Vol. 29 ›› Issue (5): 639-647.doi: 10.11743/ogg20080513

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Application of comprehensive geophysical methods in the research of the pre-Cenozoic residual basins in circum-Bohai Bay region

Hao Tianyao1, Wu Jiansheng2, Xu Ya1, Wang Jialin2, Song Haibin1, Huang Song1, Wang Zhenli1   

  1. 1. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China;
    2. Tongji University, Shanghai 200092, China
  • Received:2008-08-18 Online:2008-10-24 Published:2012-01-16

Abstract:

Macro spatial distributioin of residual basins in the circum-Bohai Bay area and the characteristics of their residual thickness distribution are defined through peeling off the influences of the Cenozoic and deep basement and by adopting an integrated geophysical method.The method is mainly based on gravity and magnetic data,and it takes data of high accuracy such as MT and shallow seismic data as the constraints and is realized through forward modeling and inversion.The residual basins in the area shows an‘E-W zonation',with the superimposed area of the Cenozoic and Upper Paleozoic as the favorable target for the Pre-Cenozoic oil and gas exploration.Ten favorable areas of the Pre-Cenozoic are also defined through combining the residual thicknesses of the basins and geological conditions for oil and gas accumulations.

Key words: residual thickness, residual basin, Pre-Cenozoic, circum-Bohai Bay, integrated geophysical methods

CLC Number: