An Analysis for the Influences of Fracture Network System on Multi-Stage Fractured Horizontal Well Productivity in Shale Gas Reservoirs
This paper presents two representative models to analyze the flow dynamic of multi-scale porous medium in hydraulic fractured horizontal shale gas wells. In this work, considering the characteristic mechanisms (multi-scale porous space, desorption and diffusion), flow equations in shale are establis...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-02-01
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| Series: | Energies |
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| Online Access: | http://www.mdpi.com/1996-1073/11/2/414 |
| _version_ | 1828145997919813632 |
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| author | Deliang Zhang Yu Dai Xinhua Ma Liehui Zhang Bing Zhong Jianfa Wu Zhengwu Tao |
| author_facet | Deliang Zhang Yu Dai Xinhua Ma Liehui Zhang Bing Zhong Jianfa Wu Zhengwu Tao |
| author_sort | Deliang Zhang |
| collection | DOAJ |
| description | This paper presents two representative models to analyze the flow dynamic of multi-scale porous medium in hydraulic fractured horizontal shale gas wells. In this work, considering the characteristic mechanisms (multi-scale porous space, desorption and diffusion), flow equations in shale are established. After that, two representative models (discrete fracture model and dual-porosity model) are tailored to our issues. Solved by the control-volume finite element method (CVFEM), influences of fracture network system on productivity in shale reservoirs are analyzed in detail. Based on the analysis, the effects can be summarized as follow: at the beginning of production, high conductivity fracture network means more free gas could be produced; at the later part of production, high conductive fracture network can form a large low pressure region, which can not only stimulate the desorption of adsorbed gas, but also reduce the flow resistance to the well. Finally, the sensitivities of characteristic parameters in shale are discussed. |
| first_indexed | 2024-04-11T20:40:38Z |
| format | Article |
| id | doaj.art-5c7ca626f5c640408c8ddc8de30b709d |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T20:40:38Z |
| publishDate | 2018-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-5c7ca626f5c640408c8ddc8de30b709d2022-12-22T04:04:13ZengMDPI AGEnergies1996-10732018-02-0111241410.3390/en11020414en11020414An Analysis for the Influences of Fracture Network System on Multi-Stage Fractured Horizontal Well Productivity in Shale Gas ReservoirsDeliang Zhang0Yu Dai1Xinhua Ma2Liehui Zhang3Bing Zhong4Jianfa Wu5Zhengwu Tao6PetroChina Southwest Oil & Gas Field Company, Chengdu 610000, Sichuan, ChinaPetroChina Southwest Oil & Gas Field Company, Chengdu 610000, Sichuan, ChinaPetroChina Southwest Oil & Gas Field Company, Chengdu 610000, Sichuan, ChinaPetroleum Engineering College, Southwest Petroleum University, Chengdu 610500, Sichuan, ChinaPetroChina Southwest Oil & Gas Field Company, Chengdu 610000, Sichuan, ChinaPetroChina Southwest Oil & Gas Field Company, Chengdu 610000, Sichuan, ChinaPetroChina Tarim Oilfield Company, Korla 841000, Xinjiang, ChinaThis paper presents two representative models to analyze the flow dynamic of multi-scale porous medium in hydraulic fractured horizontal shale gas wells. In this work, considering the characteristic mechanisms (multi-scale porous space, desorption and diffusion), flow equations in shale are established. After that, two representative models (discrete fracture model and dual-porosity model) are tailored to our issues. Solved by the control-volume finite element method (CVFEM), influences of fracture network system on productivity in shale reservoirs are analyzed in detail. Based on the analysis, the effects can be summarized as follow: at the beginning of production, high conductivity fracture network means more free gas could be produced; at the later part of production, high conductive fracture network can form a large low pressure region, which can not only stimulate the desorption of adsorbed gas, but also reduce the flow resistance to the well. Finally, the sensitivities of characteristic parameters in shale are discussed.http://www.mdpi.com/1996-1073/11/2/414shale gas reservoircontrol-volume finite element methodMulti-stage fractured horizontal (MFH) welldistrict fracture network (DFN)fracture network system |
| spellingShingle | Deliang Zhang Yu Dai Xinhua Ma Liehui Zhang Bing Zhong Jianfa Wu Zhengwu Tao An Analysis for the Influences of Fracture Network System on Multi-Stage Fractured Horizontal Well Productivity in Shale Gas Reservoirs Energies shale gas reservoir control-volume finite element method Multi-stage fractured horizontal (MFH) well district fracture network (DFN) fracture network system |
| title | An Analysis for the Influences of Fracture Network System on Multi-Stage Fractured Horizontal Well Productivity in Shale Gas Reservoirs |
| title_full | An Analysis for the Influences of Fracture Network System on Multi-Stage Fractured Horizontal Well Productivity in Shale Gas Reservoirs |
| title_fullStr | An Analysis for the Influences of Fracture Network System on Multi-Stage Fractured Horizontal Well Productivity in Shale Gas Reservoirs |
| title_full_unstemmed | An Analysis for the Influences of Fracture Network System on Multi-Stage Fractured Horizontal Well Productivity in Shale Gas Reservoirs |
| title_short | An Analysis for the Influences of Fracture Network System on Multi-Stage Fractured Horizontal Well Productivity in Shale Gas Reservoirs |
| title_sort | analysis for the influences of fracture network system on multi stage fractured horizontal well productivity in shale gas reservoirs |
| topic | shale gas reservoir control-volume finite element method Multi-stage fractured horizontal (MFH) well district fracture network (DFN) fracture network system |
| url | http://www.mdpi.com/1996-1073/11/2/414 |
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