Optimization of Multi-Cluster Fracturing Model under the Action of Induced Stress in Horizontal Wells
Volume fracturing in shale gas forms complex fracture networks and increases stimulated reservoir volume through large-scale fracturing operation with plug-perforation technology. However, some perforation clusters are stimulated unevenly after fracturing. This study aims to solve this problem by...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Eastern Macedonia and Thrace Institute of Technology
2016-05-01
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| Series: | Journal of Engineering Science and Technology Review |
| Subjects: | |
| Online Access: | http://www.jestr.org/downloads/Volume9Issue2/fulltext10922016.pdf |
| _version_ | 1811195214679769088 |
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| author | Shanyong Liu Yishan Lou Han Wu Keyan Teng Di Chen Auer Yao |
| author_facet | Shanyong Liu Yishan Lou Han Wu Keyan Teng Di Chen Auer Yao |
| author_sort | Shanyong Liu |
| collection | DOAJ |
| description | Volume fracturing in shale gas forms complex fracture networks and increases stimulated reservoir volume through
large-scale fracturing operation with plug-perforation technology. However, some perforation clusters are stimulated
unevenly after fracturing. This study aims to solve this problem by analyzing the shortcomings of the conventional
fracturing model and developing a coupled model based on the 2D fracture motion equation, energy conservation law,
linear elastic mechanics, and stress superposition principle. First, a multi-fracture in-situ stress model was built by
studying the induced stress produced by the fracture initiation to deduce the multi-fracture induced stress impact factor on
the basis of the stress superposition principle. Then, the classical Perkins–Kern–Nordgren model was utilized with the
crustal stress model. Finally, a precise fracturing design method was used to optimize perforation and fracturing
parameters under the new model. Results demonstrate that the interference effect among fractures is the major factor
causing the non-uniform propagation of each fracture. Compression on the main horizontal stress increases the net
pressure. Therefore, both the degree of operation difficulty and the complexity of fracture geometry are improved. After
applying the optimal design, the production is increased by 20%, and the cost is reduced by 15%. |
| first_indexed | 2024-04-12T00:39:41Z |
| format | Article |
| id | doaj.art-7d4774b19a3447b6bfb31c8b0f080ebc |
| institution | Directory Open Access Journal |
| issn | 1791-2377 1791-2377 |
| language | English |
| last_indexed | 2024-04-12T00:39:41Z |
| publishDate | 2016-05-01 |
| publisher | Eastern Macedonia and Thrace Institute of Technology |
| record_format | Article |
| series | Journal of Engineering Science and Technology Review |
| spelling | doaj.art-7d4774b19a3447b6bfb31c8b0f080ebc2022-12-22T03:55:04ZengEastern Macedonia and Thrace Institute of TechnologyJournal of Engineering Science and Technology Review1791-23771791-23772016-05-01925965Optimization of Multi-Cluster Fracturing Model under the Action of Induced Stress in Horizontal WellsShanyong Liu0Yishan Lou1Han Wu2Keyan Teng3Di Chen4Auer Yao5School of Petroleum Engineering, Yangtze University, Wuhan 430100, ChinaSchool of Petroleum Engineering, Yangtze University, Wuhan 430100, ChinaNuclear and Radiation Safety Center, Beijing 100082, ChinaNuclear and Radiation Safety Center, Beijing 100082, ChinaSchool of Energy Resources, China University of Geosciences, Beijing 100083, China4 I-Virtual Simulation Systems Inc. Vancover, CanadaVolume fracturing in shale gas forms complex fracture networks and increases stimulated reservoir volume through large-scale fracturing operation with plug-perforation technology. However, some perforation clusters are stimulated unevenly after fracturing. This study aims to solve this problem by analyzing the shortcomings of the conventional fracturing model and developing a coupled model based on the 2D fracture motion equation, energy conservation law, linear elastic mechanics, and stress superposition principle. First, a multi-fracture in-situ stress model was built by studying the induced stress produced by the fracture initiation to deduce the multi-fracture induced stress impact factor on the basis of the stress superposition principle. Then, the classical Perkins–Kern–Nordgren model was utilized with the crustal stress model. Finally, a precise fracturing design method was used to optimize perforation and fracturing parameters under the new model. Results demonstrate that the interference effect among fractures is the major factor causing the non-uniform propagation of each fracture. Compression on the main horizontal stress increases the net pressure. Therefore, both the degree of operation difficulty and the complexity of fracture geometry are improved. After applying the optimal design, the production is increased by 20%, and the cost is reduced by 15%.http://www.jestr.org/downloads/Volume9Issue2/fulltext10922016.pdfshale gasinduced stresscluster perforationstress superpositionstaged fracturingcoupling |
| spellingShingle | Shanyong Liu Yishan Lou Han Wu Keyan Teng Di Chen Auer Yao Optimization of Multi-Cluster Fracturing Model under the Action of Induced Stress in Horizontal Wells Journal of Engineering Science and Technology Review shale gas induced stress cluster perforation stress superposition staged fracturing coupling |
| title | Optimization of Multi-Cluster Fracturing Model under the Action of Induced Stress in Horizontal Wells |
| title_full | Optimization of Multi-Cluster Fracturing Model under the Action of Induced Stress in Horizontal Wells |
| title_fullStr | Optimization of Multi-Cluster Fracturing Model under the Action of Induced Stress in Horizontal Wells |
| title_full_unstemmed | Optimization of Multi-Cluster Fracturing Model under the Action of Induced Stress in Horizontal Wells |
| title_short | Optimization of Multi-Cluster Fracturing Model under the Action of Induced Stress in Horizontal Wells |
| title_sort | optimization of multi cluster fracturing model under the action of induced stress in horizontal wells |
| topic | shale gas induced stress cluster perforation stress superposition staged fracturing coupling |
| url | http://www.jestr.org/downloads/Volume9Issue2/fulltext10922016.pdf |
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