西南石油大学学报(自然科学版) ›› 2011, Vol. 33 ›› Issue (3): 61-66.

• 地质勘探 • Previous Articles     Next Articles

Analysis of Oil and Source Rock Correlation and Pooling History in Kaili Area

  

  1. PENG Jin-ning, LIU Guang-xiang, LUO Kai-ping, L¨U Jun-xiang
    Wuxi Petroleum Geology Branch, Exploration and Production Research Institute, SINOPEC, Wuxi, Jiangsu 214151, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-06-20 Published:2011-06-20

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Abstract: This paper analyzes geochemistry and oil source and thermal histories in Kali area are discussed by using carbon isotope, saturated hydrocarbon chromatography, steranes and terpanes based on the results of previous researches, the observation of field outcrop and the measuring of oil seepage samples. The results indicate that NO. 47 oil well at Huzhuang and oil seepage hosted in the Ordivican O1h member at Shangqingshan area, as well as the hydrocarbon source rock of asphalt sandstone and oil sand are of the same oil source, mainly originating

from upper simian series and lower Cambrian. Oil seepage hosted in the Permian source rocks of DaFengdong area is mainly self-generation and self-storage, and may be the mixture of oils generated from the upper simian series and lower Cambrian source rocks. Hydrocarbon was expulsed by Tectonic movement of late Caledonian and trap
formed at suitable time. Although the later period deposits the cap rock superimposition, the source rock of lower Cambrian was not achieving the high mature-overmature stage in the end of Triassic. Before the Yanshanian structure
uplifted, maximum temperature of Honghuayuan reservoir was still lower than 175 ℃（Ro<1.3%）, and the oil phase to maintain. Deep and shallow structure were uncoordinated and the partial hydrocarbon source rock was re-buried
deep again by the thrust-nappe function from the Yanshanian structure.

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