致密砂岩储层,沉积环境,成岩作用,储层评价,勘探选区," /> 致密砂岩储层,沉积环境,成岩作用,储层评价,勘探选区,"/> tight sandstone reservoir , sedimentary environments, diagenesis, reservoire valuation, prospecting area,"/> Source kitchen and organic facies of source rocks in Sahantala Sag, Erlian Basin

Lithologic Reservoirs ›› 2017, Vol. 29 ›› Issue (2): 28-35.doi: 10.3969/j.issn.1673-8926.2017.02.004

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Source kitchen and organic facies of source rocks in Sahantala Sag, Erlian Basin

ZHAO Zhigang1, WANG Feiyu2, WANG Hongbo1, WANG Mingwei1, WANG Hao3, LAN Baofeng1   

  1. 1. Research Institute of Exploration and Development, PetroChina Huabei Oilfield Company, Renqiu 062552, Hebei, China;
    2. College of Geosciences, China University of Petroleum(Beijing), Beijing 102249, China;
    3. Graduate School of Northwest University, Xi'an 710069, China
  • Received:2017-01-09 Revised:2017-02-15 Online:2017-03-21 Published:2017-03-21

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Abstract: The study of organic facies of source rocks can contribute to characterize the source kitchen in the hydrocarbon exploration and development. In order to assess the prospects of Saihantala Sag,Erlian Basin,the Rock-Eval data were used to classify the organic facies of source rocks and realize the evaluation of source rocks. The parameters of alkanes,biomarker and vitrinite reflectance were used to determine the organic matter maturity of hydrocarbon source rocks,and the quantitative characterization of source kitchen was realized. The results show that the Lower Cretaceous source rocks mainly developed in the A'ershan Formation(K1ba),the first member(K1 bt1)and second member(K1 bt2)of Tenggeer Formation in Saihantala Sag. The source rocks in the K1 ba are mainly organic facies F,and the source rocks in K1 bt1 and K1 bt2 are mainly organic facies D/E,with a little organic facies C. The vertical distribution of source rocks shows the characteristics of organic facies F,D/E and F from bottom to top. The source rocks in the K1 bt1 is the main source rocks,and the hydrocarbon expulsion intensity ranges from 5×106 t/km2 to 35×106 t/km2,followed by K1ba source rocks,and the hydrocarbon expulsion intensity is(2-8)×106 t/km2.

Key words: tight sandstone reservoir ')">

CLC Number: 

  • TE122.1
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