J4 ›› 2010, Vol. 40 ›› Issue (1): 30-37.

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Characteristics of Sedimentary Micro-Facies for Chang 6 Reservoir in Jianyucha Region of Zibei Oilfield in Ordos Basin

CAO Jin-zhou1,REN Zhan-li1,GAO Xing-jun2,KANG Li-ming2,ZHANG Na3,HAN Wei4,WANG Min2   

  1. 1.State Key Laboratory of Continental Dynamics/Department of Geology, Northwest University,Xi’an 710069|China;2.Research Institute| Shaanxi Yanchang Petroleum (Group) Co.Ltd| Xi’an 710075,China;3.Petroleum Exploration and Development Research Institute,Changqing Oilfield,PetroChina,Xi’an 710021,China;4.Xi’an Institute of Geology and Minerals Resources,Xi’an 710054,China
  • Received:2009-05-12 Online:2010-01-26 Published:2010-01-26

Abstract:

By means of comprehensive study on petroleum geology, modern test technology，well logging technology, and the combination of macroexamination with microexamination, regional information with well data, through the petrology, grain size, signs of logging, etc, the authors studied micro-sedimentary facies and distribution law for the Chang 6 reservoir of Triassic in Jianyucha region in Zibei oil field. New understanding of sedimentary microfacies is concluded as followed：Chang 6 reservoir belongs to the delta plain distributary channel sedimentary which includes two main types of sedimentary microfacies-distributary channel and distributary bay.The sandbody is controled by distributary channel which alignment is from northeast to southwest, and the main sandbody trend and distribution have a certain succession in profile section. The delta plain distributary channel sedimentary is beneficial to oil-gas gathering.

Key words: Ordos basin, Jianyucha region, Triassic, delta plain, distributary channel, oil fields

CLC Number: 

  • TE122．2
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