Method for Fracture Network Calculations in Multi-Staged Horizontal Drilling in Shale Reservoirs
- Authors: Zhou J.1,2, Li C.3, Deng R.3, Li Z.4, Yang P.5
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Affiliations:
- Sinopec Research Institute of Petroleum Engineering
- State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development
- School of Energy Resource, Chengdu University of Technology
- CNPC Changqing Oilfield Company, Oil & Gas Technology Research Institute
- CNPC Changqing Oilfield Company, NO.6 Oil Production Plant
- Issue: Vol 54, No 4 (2018)
- Pages: 493-499
- Section: Article
- URL: https://journals.rcsi.science/0009-3092/article/view/235614
- DOI: https://doi.org/10.1007/s10553-018-0951-6
- ID: 235614
Cite item
Abstract
In this paper, based on the principle of superposition of acting forces, we propose a mathematical model for injected fluid-induced stress and calculate the stress distribution and SRV width vs. the stress difference in the formation. The results show that the nature of the propagation of the fracture network in multi-staged hydraulic fracturing depends on the stress in the initial cycle. The larger the horizontal stress difference, the larger the width of the fracture network in the rock. If the stress difference is greater than 5 MPa, the width of the fracture network decreases dramatically. When the net pressure is greater than 8 MPa, the width slowly increases. The calculation results are in good agreement with microseismic monitoring data for conditions in the Southwest shale field (China), suggesting that the proposed model is sufficiently reliable and accurate.
About the authors
Jun Zhou
Sinopec Research Institute of Petroleum Engineering; State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development
Email: lichengyong198l@l26.com
China, Beijing; Beijing
Cheng-yong Li
School of Energy Resource, Chengdu University of Technology
Author for correspondence.
Email: lichengyong198l@l26.com
China, Chengdu
Rui Deng
School of Energy Resource, Chengdu University of Technology
Email: lichengyong198l@l26.com
China, Chengdu
Zhe Li
CNPC Changqing Oilfield Company, Oil & Gas Technology Research Institute
Email: lichengyong198l@l26.com
China, Xi’an
Peng Yang
CNPC Changqing Oilfield Company, NO.6 Oil Production Plant
Email: lichengyong198l@l26.com
China, Dingbian