西南石油大学学报(自然科学版)

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Petroleum Geological Condition of Cretaceous in Liupanshan Basin#br# and Favorable Areas Prediction

XIE Qing1*, YANG Xingke1, JIANG Kuan2, YANG Longwei1   

  1. 1. School of Earth Science and Resources,Chang′ an University,Xi′ an,Shaanxi 710054,China
    2. West Pipeline Gas Company,PetroChina,Lanzhou,Gansu 730070,China
  • Online:2016-06-01 Published:2016-06-01

Abstract:

Liupanshan Basin is located in the joint of southwestern margin of North China block and Qilian - Qinling structure
belt. It′s under a complex system. According to field investigation,there distribute much oil and gas of Cretaceous,which indicates
that the basin has oil production potential. But the entire basin is of low degree of prospecting,and great differences exist
in research data and in determination of target layers of exploration. Using field investigation,experimental analysis methods
and gravity-magnetic materials,in-depth research and evaluation are made on development situation of the hydrocarbon source
rock and characteristics of reservoir and reservoir−forming combination in Cretaceous reservoir,and we get the breakthrough
findings:Liwaxia group belongs to class III medium reservoir,and Madongshan and Naijiahe groups belong to class IV the
poor reservoir;large sets of sandstone development in Paleogene can be a favorable Cretaceous reservoir of oil and gas;organic
matter of the hydrocarbon source rock is of sapropelic-mixed type with high degree of thermal evolution,and is favorable for
hydrocarbon generation. Three kinds of exploration areas and five favorable local tectonic positions have been predicted. The
research results have an important guiding significance to further exploration of oil and gas in Liupanphan Basin.

Key words: reservoir property, hydrocarbon source rock, favorable area prediction, Cretaceous, Liupanphan Basin

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