Oil & Gas Geology ›› 2009, Vol. 30 ›› Issue (4): 412-419.doi: 10.11743/ogg20090404

Previous Articles     Next Articles

Distribution features of current geothermal field in the Bohai Sea waters

Qiu Nansheng1, Wei Gang2, Li Cuicui1, Zhang Yuan3, Guo Yonghua2   

  1. 1. State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing 102249, China;
    2. Research Center for Basin and Reservoir, China University of Petroleum, Beijing 102249, China;
    3. Department of Technology, CNOOC Tianjin Company, Tianjin 300452, China
  • Received:2009-06-03 Online:2009-08-25 Published:2012-01-16

Abstract:

The average geothermal flow in the Bohai Sea waters is (60.9±8.7)mW/m2.It is up to 70~80 mW/m2 in the Shijiutuo,Shaleitian and Bonan uplifts,65-75 mW/m2 in the Bozhong sag,the Huanghekou sag and the Qinnan uplift,while lower than 65 mW/m2 in the Liaodong bay,Miaoxi,the Laizhou bay,Qikou,Sha'nan and Chengbei.The geothermal gradient varies in different structural units of the Bohai Sea waters and averages at 30.8℃/km.Higher geothermal gradient 32-42℃/km,is tested in the Shaleitian uplift,Bozhong,the Laizhou bay,Qikou,Sha'nan and Chengbei.In contrast,it is low in the sags,22-32℃/km on average.The distribution of geothermal field coincides with the structural configuration in the Bohai Sea waters,roughly reflecting the structural form of the NNE-trending Tan-Lu Fault.

Key words: geothermal flow, geothermal gradient, geothermal field, Bohai Sea waters

CLC Number: