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Published in: Chemistry and Technology of Fuels and Oils 1/2017

02-05-2017

New Method for Evaluating Rock Stress Sensitivity for Low-Permeability Tight Gas Reservoirs

Authors: Zhaopeng Yang, Hao Yang, Heping Chen, Hongqiang Zhang

Published in: Chemistry and Technology of Fuels and Oils | Issue 1/2017

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Abstract

Conventional methods for determining rock stress sensitivity, in which the confining pressure is varied while the pore pressure is held at a constant level, are not suitable for the conditions in low-permeability tight gas reservoirs. In this work, we have studied an evaluation method that involves varying the pore pressure for constant confining pressure. In order to establish the actual reservoir pressures, we used a method involving simultaneous increase in the confining and pore pressures. We have derived an equation describing the dependence of the gas well productivity on the stress sensitivity of the reservoir and have demonstrated the validity of our model.

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Metadata
Title
New Method for Evaluating Rock Stress Sensitivity for Low-Permeability Tight Gas Reservoirs
Authors
Zhaopeng Yang
Hao Yang
Heping Chen
Hongqiang Zhang
Publication date
02-05-2017
Publisher
Springer US
Published in
Chemistry and Technology of Fuels and Oils / Issue 1/2017
Print ISSN: 0009-3092
Electronic ISSN: 1573-8310
DOI
https://doi.org/10.1007/s10553-017-0782-x

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