NDLI: Linear numerical calculation method for obtaining critical point, pore fluid, and framework parameters of gas-bearing media

Content Provider	Springer Nature Link
Author	Niu, Binhua Sun, Chunyan Yan, Guoying Yang, Wei Liu, Chang
Copyright Year	2009
Abstract	Up to now, the primary method for studying critical porosity and porous media are experimental measurements and data analysis. There are few references on how to numerically calculate porosity at the critical point, pore fluid-related parameters, or framework-related parameters. So in this article, we provide a method for calculating these elastic parameters and use this method to analyze gas-bearing samples. We first derive three linear equations for numerical calculations. They are the equation of density ρ versus porosity ϕ, density times the square of compressional wave velocity ρV $_{p}$ $^{2}$ versus porosity, and density times the square of shear wave velocity ρV $_{S}$ $^{2}$ versus porosity. Here porosity is viewed as an independent variable and the other parameters are dependent variables. We elaborate on the calculation steps and provide some notes. Then we use our method to analyze gas-bearing sandstone samples. In the calculations, density and P- and S-velocities are input data and we calculate eleven relative parameters for porous fluid, framework, and critical point. In the end, by comparing our results with experiment measurements, we prove the viability of the method.
Starting Page	319
Ending Page	326
Page Count	8
File Format	PDF
ISSN	16727975
Journal	Applied Geophysics
Volume Number	6
Issue Number	4
e-ISSN	19930658
Language	English
Publisher	Chinese Geophysical Society
Publisher Date	2009-12-29
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	linear equation numerical calculation gas-bearing media critical point pore fluid and framework elastic parameters Applied Earth Sciences Geophysics/Geodesy
Content Type	Text
Resource Type	Article
Subject	Geophysics

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