Genetic types and exploration potential of natural gas in Bohai Bay Basin

Zhao Chang-yi, Li Yong-xin, Wang Ju-feng, Liu Hai-tao, Deng Yan, Zhao Bo-ya

doi:10.11764/j.issn.1672-1926.2019.05.016

Natural Gas Geoscience >

2019 , Vol. 30 >Issue 6: 783 - 789

DOI: https://doi.org/10.11764/j.issn.1672-1926.2019.05.016

Genetic types and exploration potential of natural gas in Bohai Bay Basin

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1.PetroChina Research Institute of Petroleum Exploration & Development,Beijing 100083,China;
2.PetroChina Huabei Oilfield Company,Renqiu 062552,China

Received date: 2019-04-15

Revised date: 2019-05-05

Online published: 2019-08-05

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Abstract

The Bohai Bay Basin is one of the oil-bearing basins characterized by rich oil.After more than 50 years of exploration,a series of gas fields or oil and gas fields of different scales have been discovered.Among them,natural gas has been found to be mostly small and medium-sized gas fields,and gas reservoirs are used for condensate analysis.Through the analysis of the geochemical characteristics of gas fields in the northern China,Bodong,Dagang and Liaohe areas in the northern Bohai Bay Basin,it is found that the natural gas genesis types in the Bohai Bay Basin are rich,including bacterial gas,oil-type gas and coal-derived gas.The humic parent material and the mature-high mature thermal evolution stage have obvious advantages.Natural gas resources are mostly distributed in the vicinity of the source center of the source rock,and the deep layers of the hydrocarbon-generating depression and its adjacent convex parts,such as the Qibei sub-concave and the Banqiao sub-cave Paleogene,the Liaohe area western depression,the Paleogene,and the Qikou-Qianwu-Ordovician buried hills in the Upper Paleozoic buried hill and the Nanpu Sag are all the favorable exploration areas for natural gas.

Key words： Bohai Bay Basin; Natural gas; Genetic type; Exploration potential

Cite this article

Zhao Chang-yi, Li Yong-xin, Wang Ju-feng, Liu Hai-tao, Deng Yan, Zhao Bo-ya . Genetic types and exploration potential of natural gas in Bohai Bay Basin[J]. Natural Gas Geoscience, 2019 , 30(6) : 783 -789 . DOI: 10.11764/j.issn.1672-1926.2019.05.016

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