Sedimentary microfacies of the second member of Hetaoyuan Formation in Xia’ermen Oilfield , Biyang Sag , Nanxiang Basin

  • HAN Yonglin ,
  • WANG Haihong ,
  • CHEN Zhihua ,
  • WANG Fang ,
  • LIANG Xiaowei ,
  • WANG Chengyu ,
  • NIU Xiaobing
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  • 1. Faculty of Earth Resources , China Uni versity of Geosciences , Wuhan 430074 , China;
    2. College of Oil and Gas Resources , Xi’an Shiyou University , Xi’an 710065 , China

Online published: 2007-09-15

Abstract

The reservoir heterogeneity of the second member of Hetaoyuan Formation in Xia’ermen Oilfield is strong and the adjacent well productivity is greatly different. On the basis of the data of core, well logging and grain size, the division and characteristics analysis of sedimentary microfacies of the second member of Hetaoyuan Formation are carried out, and the shape and distribution of the reservoir sand body and the mode of sand body superposition are analyzed. The result showed that Ⅱ—Ⅴoil2bearing layer of the second member of Hetaoyuan Formation developed braided river delta front subfacies deposit , which can be divided into five sizes of sedimentary microfacies and creeping turbidite sand body. The sedimentary microfacies include subsea distributary channel, mouth bar, distal bar, front sheet sand and distributary interchannel, among which the subsea distributary channel and mouth bar are the favorable facies belt s of the study area.

 

Cite this article

HAN Yonglin , WANG Haihong , CHEN Zhihua , WANG Fang , LIANG Xiaowei , WANG Chengyu , NIU Xiaobing . Sedimentary microfacies of the second member of Hetaoyuan Formation in Xia’ermen Oilfield , Biyang Sag , Nanxiang Basin[J]. Lithologic Reservoirs, 2007 , 19(3) : 66 -72 . DOI: 10.3969/j.issn.1673-8926.2007.03.012

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