Analysis of the Influence of Different Fracture Network Structures on the Production of Shale Gas Reservoirs

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dc.contributor.authorYue, Ming
dc.contributor.authorHuang, Xiaohe
dc.contributor.authorHe, Fanmin
dc.contributor.authorYang, Lianzhi
dc.contributor.authorZhu, Weiyao
dc.contributor.authorChen, Zhangxin
dc.date.accessioned2020-12-20T08:00:14Z
dc.date.available2020-12-20T08:00:14Z
dc.date.issued2020-12-15
dc.date.updated2020-12-20T08:00:13Z
dc.description.abstractVolume 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.
dc.description.versionPeer Reviewed
dc.identifier.citationMing Yue, Xiaohe Huang, Fanmin He, Lianzhi Yang, Weiyao Zhu, and Zhangxin Chen, “Analysis of the Influence of Different Fracture Network Structures on the Production of Shale Gas Reservoirs,” Geofluids, vol. 2020, Article ID 8870429, 11 pages, 2020. doi:10.1155/2020/8870429
dc.identifier.urihttp://dx.doi.org/10.1155/2020/8870429
dc.identifier.urihttp://hdl.handle.net/1880/112891
dc.identifier.urihttps://dx.doi.org/10.11575/PRISM/38485
dc.language.rfc3066en
dc.rights.holderCopyright © 2020 Ming Yue et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
dc.titleAnalysis of the Influence of Different Fracture Network Structures on the Production of Shale Gas Reservoirs
dc.typeJournal Article
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