New Method for Evaluating Rock Stress Sensitivity for Low-Permeability Tight Gas Reservoirs
- Authors: Yang Z.1, Yang H.2, Chen H.1, Zhang H.3
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Affiliations:
- PetroChina Research Institute of Petroleum Exploration Development
- Key Laboratory on Deep Geo Drilling Technology, Ministry of Land and Resources China University of Geosciences
- No.7 Oil Production Company of Daqing Oilfield Company Ltd.
- Issue: Vol 53, No 1 (2017)
- Pages: 68-76
- Section: Article
- URL: https://journals.rcsi.science/0009-3092/article/view/234859
- DOI: https://doi.org/10.1007/s10553-017-0782-x
- ID: 234859
Cite item
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.
About the authors
Zhaopeng Yang
PetroChina Research Institute of Petroleum Exploration Development
Email: yanghao@cugb.edu.cn
China, Beijing
Hao Yang
Key Laboratory on Deep Geo Drilling Technology, Ministry of Land and Resources China University of Geosciences
Author for correspondence.
Email: yanghao@cugb.edu.cn
China, Beijing
Heping Chen
PetroChina Research Institute of Petroleum Exploration Development
Email: yanghao@cugb.edu.cn
China, Beijing
Hongqiang Zhang
No.7 Oil Production Company of Daqing Oilfield Company Ltd.
Email: yanghao@cugb.edu.cn
China, Daqing