阿尔及利亚438b 区块三叠系Serie Inferiere 段储层平面非均质性研究

doi:10.3969/j.issn.1673-8926.2009.02.005

Lithologic Reservoirs ›› 2009, Vol. 21 ›› Issue (2): 24-28.doi: 10.3969/j.issn.1673-8926.2009.02.005

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Study on horizontal heterogeneity in Serie Inferiere of Triassic in 438b block , Algeria

WEI Qinlian¹，ZHENG Rongcai²，XIAO Ling¹，MA Guofu³，DOU Shijie³，TIAN Baozhong³

1. School of Petroleum Resource， Xi’an Shiyou University， Xi’an 710065， China； 2. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation， Chengdu University of Technology， Chengdu 610059， China； 3. Research Institute of Exploration and Development，Yumen Oilfield Company， PetroChina， Yumen 735200， China

Online:2009-06-16 Published:2009-06-16

Abstract

Abstract:

Based on the analysis of core, logging and drilling, the sedimentary characteristics of braided channel in Serie Inferiere of Triassic in 438b block are analyzed. Combined with porosity, sand density, onrush coefficient, variation coefficient, permeability graded difference and frequency-interlayers, the entropy weight method is used to calculate the heterogeneous synthetic index in Serie Inferiere ofTriassic. The distribution map of reservoir heterogeneity is drawn based on sedimentary facies. This method can take fully advantages of entropy weight method, and it can accurately characterize the horizontal heterogeneity.

Key words: reservoir factors, sedimentary facies, Yanchang Formation, Hejiaji area

WEI Qinlian，ZHENG Rongcai，XIAO Ling，MA Guofu，DOU Shijie，TIAN Baozhong. Study on horizontal heterogeneity in Serie Inferiere of Triassic in 438b block , Algeria[J].Lithologic Reservoirs, 2009, 21(2): 24-28.

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