The Influence of Low Permeable Sandstone Pore Structure on Rock Electrical Parameters and Its Applications

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  • 1.Sichuan Key Laboratory of Natural Gas Geology,Chengdu 610500,China;
    2.School of Geoscience and Technology,Southwest Petroleum University,Chengdu 610500,China;
    3.Research Institude of Petroleum Exploration of Shengli Oilfield,SINOPEC,Dongying 257015,China

Received date: 2015-03-04

  Revised date: 2015-05-07

  Online published: 2015-12-10

Abstract

Low permeability is a salient feature of Es3 reservoirs in the southern slope of Dongying Sag.And the complex pore structure makes it difficult to unify electrical parameters,which brings some difficulties to evaluating reservoir saturation.The pore structures of low permeability sandstone reservoir in Es3 are analyzed,based on core physical properties,casting thin sections and mercury injection data.It is divided into 3 categories and 5 subcategories,combined with rock electricity experiment data to extract rock-electrical parameters “a” and “m” from different pore structure of reservoir in Es3.Along with the wellbore profile,using well logging response characteristics,a comprehensive method is established.It can identify different pore structure types and determine the rock-electrical parameters of different pore structure types.As a basis for further saturation calculation,it  effectively improved the accuracy of low permeability sandstone reservoir saturation interpretation.

Cite this article

YAN Jian-ping,WEN Dan-ni,LI Zun-zhi,GENG Bin,LIANG Qiang,HE Xu . The Influence of Low Permeable Sandstone Pore Structure on Rock Electrical Parameters and Its Applications[J]. Natural Gas Geoscience, 2015 , 26(12) : 2227 -2233 . DOI: 10.11764/j.issn.1672-1926.2015.12.2227

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