Analysis of the Influence of Different Fracture Network Structures on the Production of Shale Gas Reservoirs
Volume fracturing is a key technology in developing unconventional gas reservoirs that contain nano/micron pores. Different fracture structures exert significantly different effects on shale gas production, and a fracture structure can be learned only in a later part of detection. On the basis of a...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2020-01-01
|
| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2020/8870429 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849686966236348416 |
|---|---|
| author | Ming Yue Xiaohe Huang Fanmin He Lianzhi Yang Weiyao Zhu Zhangxin Chen |
| author_facet | Ming Yue Xiaohe Huang Fanmin He Lianzhi Yang Weiyao Zhu Zhangxin Chen |
| author_sort | Ming Yue |
| collection | DOAJ |
| description | Volume fracturing is a key technology in developing unconventional gas reservoirs that contain nano/micron pores. Different fracture structures exert significantly different effects on shale gas production, and a fracture structure can be learned only in a later part of detection. On the basis of a multiscale gas seepage model considering diffusion, slippage, and desorption effects, a three-dimensional finite element algorithm is developed. Two finite element models for different fracture structures for a shale gas reservoir in the Sichuan Basin are established and studied under the condition of equal fracture volumes. One is a tree-like fracture, and the other is a lattice-like fracture. Their effects on the production of a fracture network structure are studied. Numerical results show that under the same condition of equal volumes, the production of the tree-like fracture is higher than that of the lattice-like fracture in the early development period because the angle between fracture branches and the flow direction plays an important role in the seepage of shale gas. In the middle and later periods, owing to a low flow rate, the production of the two structures is nearly similar. Finally, the lattice-like fracture model is regarded as an example to analyze the factors of shale properties that influence shale gas production. The analysis shows that gas production increases along with the diffusion coefficient and matrix permeability. The increase in permeability leads to a larger increase in production, but the decrease in permeability leads to a smaller decrease in production, indicating that the contribution of shale gas production is mainly fracture. The findings of this study can help better understand the influence of different shapes of fractures on the production in a shale gas reservoir. |
| format | Article |
| id | doaj-art-01b6638fa0144ff18f5b8586cdbef1fb |
| institution | DOAJ |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-01b6638fa0144ff18f5b8586cdbef1fb2025-08-20T03:22:30ZengWileyGeofluids1468-81151468-81232020-01-01202010.1155/2020/88704298870429Analysis of the Influence of Different Fracture Network Structures on the Production of Shale Gas ReservoirsMing Yue0Xiaohe Huang1Fanmin He2Lianzhi Yang3Weiyao Zhu4Zhangxin Chen5School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaInnovation Application Institute, Zhejiang Ocean University, Zhoushan 316000, ChinaChengdu Surveying Geotechnical Research Institute Co., Ltd. of MCC, Chengdu 610023, ChinaSchool of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaChemical and Petroleum Engineering, University of Calgary, CanadaVolume fracturing is a key technology in developing unconventional gas reservoirs that contain nano/micron pores. Different fracture structures exert significantly different effects on shale gas production, and a fracture structure can be learned only in a later part of detection. On the basis of a multiscale gas seepage model considering diffusion, slippage, and desorption effects, a three-dimensional finite element algorithm is developed. Two finite element models for different fracture structures for a shale gas reservoir in the Sichuan Basin are established and studied under the condition of equal fracture volumes. One is a tree-like fracture, and the other is a lattice-like fracture. Their effects on the production of a fracture network structure are studied. Numerical results show that under the same condition of equal volumes, the production of the tree-like fracture is higher than that of the lattice-like fracture in the early development period because the angle between fracture branches and the flow direction plays an important role in the seepage of shale gas. In the middle and later periods, owing to a low flow rate, the production of the two structures is nearly similar. Finally, the lattice-like fracture model is regarded as an example to analyze the factors of shale properties that influence shale gas production. The analysis shows that gas production increases along with the diffusion coefficient and matrix permeability. The increase in permeability leads to a larger increase in production, but the decrease in permeability leads to a smaller decrease in production, indicating that the contribution of shale gas production is mainly fracture. The findings of this study can help better understand the influence of different shapes of fractures on the production in a shale gas reservoir.http://dx.doi.org/10.1155/2020/8870429 |
| spellingShingle | Ming Yue Xiaohe Huang Fanmin He Lianzhi Yang Weiyao Zhu Zhangxin Chen Analysis of the Influence of Different Fracture Network Structures on the Production of Shale Gas Reservoirs Geofluids |
| title | Analysis of the Influence of Different Fracture Network Structures on the Production of Shale Gas Reservoirs |
| title_full | Analysis of the Influence of Different Fracture Network Structures on the Production of Shale Gas Reservoirs |
| title_fullStr | Analysis of the Influence of Different Fracture Network Structures on the Production of Shale Gas Reservoirs |
| title_full_unstemmed | Analysis of the Influence of Different Fracture Network Structures on the Production of Shale Gas Reservoirs |
| title_short | Analysis of the Influence of Different Fracture Network Structures on the Production of Shale Gas Reservoirs |
| title_sort | analysis of the influence of different fracture network structures on the production of shale gas reservoirs |
| url | http://dx.doi.org/10.1155/2020/8870429 |
| work_keys_str_mv | AT mingyue analysisoftheinfluenceofdifferentfracturenetworkstructuresontheproductionofshalegasreservoirs AT xiaohehuang analysisoftheinfluenceofdifferentfracturenetworkstructuresontheproductionofshalegasreservoirs AT fanminhe analysisoftheinfluenceofdifferentfracturenetworkstructuresontheproductionofshalegasreservoirs AT lianzhiyang analysisoftheinfluenceofdifferentfracturenetworkstructuresontheproductionofshalegasreservoirs AT weiyaozhu analysisoftheinfluenceofdifferentfracturenetworkstructuresontheproductionofshalegasreservoirs AT zhangxinchen analysisoftheinfluenceofdifferentfracturenetworkstructuresontheproductionofshalegasreservoirs |