Modified continuous random patchy-saturation model in tight gas detection

被引：0
|
作者：
Wei X. [1 ,2 ]
Yang Z. [1 ]
Yan X. [1 ]
Lu M. [1 ]
Li X. [1 ]
Ren Y. [1 ]
机构：
[1] Research Institute of Petroleum Exploration and Development, PetroChina, Beijing
[2] Beijing Vocational College of Labour and Social Security, Beijing
来源：
Shiyou Diqiu Wuli Kantan/Oil Geophysical Prospecting | 2018年 / 53卷 / 06期
关键词：
Gas reservoir identification; Multi-scale rock-physics template; Patchy-saturation model; Porosity prediction; Rock-physics model;
D O I：
10.13810/j.cnki.issn.1000-7210.2018.06.012
中图分类号：
学科分类号：
摘要：
The heterogeneous distribution of gas and water in tight-sand gas reservoirs may cause complex relationships between elastic and reservoir parameters, which results in strong uncertainty in the quantitative seismic interpretation.According to characteristics of complex fluid distribution in tight-sand gas reservoirs, we modify the continuous random patchy-saturation model.This modified model can well investigate the influence of petrophysical properties and pore fluids on wave responses.A multi-scale rock physical template is established based on the modified model, and is calibrated by seismic-, logging-, and ultrasonic-scale data.The multi-scale rock physics template is applied to the tight-gas reservoir prediction in Sichuan Province.The quantitative estimation of rock porosity and gas saturation matches very well with well gas production tests. © 2018, Editorial Department OIL GEOPHYSICAL PROSPECTING. All right reserved.
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页码：1227 / 1234
页数：7
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