Lithologic Reservoirs >

2008 , Vol. 20 >Issue 1: 105 - 110

DOI: https://doi.org/10.3969/j.issn.1673-8926.2008.01.018

Using NMR T2 spectrum distribution to study fractal nature of pore structure

  • PANG Xiongqi ,
  • CHEN Dongxia ,
  • ZHANG Jun
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  • 1. Key Laboratory of Exploration Technologies for Oil and Gas Resources, Ministry of Education, Yangtze University,Jingzhou 434023, China; 2. Technology Center, Logging Co. Ltd., CNPC, Xi’an 710021, China

Online published: 2008-03-15

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Abstract

It is a newmethod to analyze the fractal nature of pore structure and petrophysical property by using NMR T2 spectrum distribution. Based on the former study, the fractal nature of the medium-high porosity and permeability reservoir is analyzed, and then the applicability and reliability of this method are discussed in low porosity and low permeability reservoir, finally, the application effect of this method in medium-high porosity and permeability reservoir is compared with the effect in lowporosity and lowpermeability reservoir. The result shows that it could determine the fractal nature of pore structure exactly and calculate the fractal dimension by using NMR T2 spectrumdistribution. The fractal dimension calculated by this method could characterize the petrophysical property closely and provide reference for reservoir characteristics research and reservoir classification.

Key words： subtle reservoir; lithologic stratigraphic reservoir; structural reservoir; nonstructural reservoir

Cite this article

PANG Xiongqi , CHEN Dongxia , ZHANG Jun . Using NMR T2 spectrum distribution to study fractal nature of pore structure[J]. Lithologic Reservoirs, 2008 , 20(1) : 105 -110 . DOI: 10.3969/j.issn.1673-8926.2008.01.018

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