Fine Analysis on Sedimentary Facies of Permian Wutonggou Formation in Jimusaer Sag,Junggar Basin

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  • (1.Key Laboratory of Petroleum Resources,Gansu Province/Key Laboratory of Petroleum Resources Research,Institute of
    Geology and Geophysics,Chinese Academy of Sciences,Lanzhou 730000,China;2.University of Chinese Academy of
    Sciences,Beijing 100049,China;3.Fengcheng Operation District,Xinjiang Oilfield Company,PetroChina,Karamay 834000,China)

Received date: 2015-05-05

  Revised date: 2015-08-21

  Online published: 2015-11-20

Abstract

On the basis of ore observation,thin section identification,combed with the regional geology,drilling,logging and seismic materials,we figured out the petrology characteristics of the reservoirs in the Permian Wutonggou Formation in Jimusaer Sag,east of Junggar Basin:low or extremely low component maturity,low-middle textural maturity,extremely low-slightly low content of cements and various types of authigenic minerals whose contents are low.On this basis,we made sure that the provenance is mainly located on the southeast of this region,the south and north are secondary.At the same time,we did some research on sedimentary facies of three sandstone groups in the 1st and 2nd members in the Wutonggou Formation,and drew sedimentary facies plane graph of each sandstone group.From Member 1st,body 3rd to member 2nd,body 2nd in the Wutonggou Formation,the study-area showed an obvious water progradation deposition process on the whole.Braided river delta plain subfacies decrease,lakeside subfacies increase;sediments transmit from pebbly sandstone,coarse sandstone  to fine sandstone,argillaceous sandstone with fine grain size.The supply of sediments decreases and the thickness of sandstone body reduces.

Cite this article

GUO Hui,NI Zhen,ZHANG Shun-cun,HUANG Hai-bing,JI Huan-cheng . Fine Analysis on Sedimentary Facies of Permian Wutonggou Formation in Jimusaer Sag,Junggar Basin[J]. Natural Gas Geoscience, 2015 , 26(S2) : 83 -95 . DOI: 10.11764/j.issn.1672-1926.2015.S2.0083

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