Seepage Model and Pressure Response Characteristics of Non-Orthogonal Multi-Fracture Vertical Wells with Superimposed Sand Body in Tight Gas Reservoirs
Faced with difficulties stemming from the complex interactions between tight gas sand bodies and fractures, when describing and identifying reservoirs, a composite reservoir model was established. By setting the supply boundary to characterize the superposition characteristics of sand bodies, a math...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-10-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/16/21/7275 |
| _version_ | 1797631979851612160 |
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| author | Ziwu Zhou Ao Xia Rui Guo Lin Chen Fengshuo Kong Xiaoliang Zhao |
| author_facet | Ziwu Zhou Ao Xia Rui Guo Lin Chen Fengshuo Kong Xiaoliang Zhao |
| author_sort | Ziwu Zhou |
| collection | DOAJ |
| description | Faced with difficulties stemming from the complex interactions between tight gas sand bodies and fractures, when describing and identifying reservoirs, a composite reservoir model was established. By setting the supply boundary to characterize the superposition characteristics of sand bodies, a mathematical model of unstable seepage in fractured vertical wells in tight sandstone gas reservoirs was developed, considering factors such as stress sensitivity, fracture density and fracture symmetry. The seepage law and pressure response characteristics of gas wells in tight sandstone discontinuous reservoirs with stress sensitivity, semi-permeable supply boundary and complex fracture topology were determined, and the reliability of the model was verified. The research results more accurately display the pressure characteristic of a vertical well in the superimposed sand body with complex fractures and provide a more comprehensive model for tight gas production dynamic analysis and well test data analysis, which can more accurately guide the dynamic inversion of reservoir and fracture parameters. |
| first_indexed | 2024-03-11T11:30:24Z |
| format | Article |
| id | doaj.art-1a587dd60c894f93b6c4f8d19a9c247f |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-11T11:30:24Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-1a587dd60c894f93b6c4f8d19a9c247f2023-11-10T15:02:02ZengMDPI AGEnergies1996-10732023-10-011621727510.3390/en16217275Seepage Model and Pressure Response Characteristics of Non-Orthogonal Multi-Fracture Vertical Wells with Superimposed Sand Body in Tight Gas ReservoirsZiwu Zhou0Ao Xia1Rui Guo2Lin Chen3Fengshuo Kong4Xiaoliang Zhao5Sulige Gas Field Branch of China Petroleum Corporation West Drilling Engineering Company, Ordos 017000, ChinaSulige Gas Field Branch of China Petroleum Corporation West Drilling Engineering Company, Ordos 017000, ChinaSulige Gas Field Branch of China Petroleum Corporation West Drilling Engineering Company, Ordos 017000, ChinaSulige Gas Field Branch of China Petroleum Corporation West Drilling Engineering Company, Ordos 017000, ChinaSulige Gas Field Branch of China Petroleum Corporation West Drilling Engineering Company, Ordos 017000, ChinaState Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, ChinaFaced with difficulties stemming from the complex interactions between tight gas sand bodies and fractures, when describing and identifying reservoirs, a composite reservoir model was established. By setting the supply boundary to characterize the superposition characteristics of sand bodies, a mathematical model of unstable seepage in fractured vertical wells in tight sandstone gas reservoirs was developed, considering factors such as stress sensitivity, fracture density and fracture symmetry. The seepage law and pressure response characteristics of gas wells in tight sandstone discontinuous reservoirs with stress sensitivity, semi-permeable supply boundary and complex fracture topology were determined, and the reliability of the model was verified. The research results more accurately display the pressure characteristic of a vertical well in the superimposed sand body with complex fractures and provide a more comprehensive model for tight gas production dynamic analysis and well test data analysis, which can more accurately guide the dynamic inversion of reservoir and fracture parameters.https://www.mdpi.com/1996-1073/16/21/7275tight gassuperimposed sand bodycomplex fractureseepage modelpressure response |
| spellingShingle | Ziwu Zhou Ao Xia Rui Guo Lin Chen Fengshuo Kong Xiaoliang Zhao Seepage Model and Pressure Response Characteristics of Non-Orthogonal Multi-Fracture Vertical Wells with Superimposed Sand Body in Tight Gas Reservoirs Energies tight gas superimposed sand body complex fracture seepage model pressure response |
| title | Seepage Model and Pressure Response Characteristics of Non-Orthogonal Multi-Fracture Vertical Wells with Superimposed Sand Body in Tight Gas Reservoirs |
| title_full | Seepage Model and Pressure Response Characteristics of Non-Orthogonal Multi-Fracture Vertical Wells with Superimposed Sand Body in Tight Gas Reservoirs |
| title_fullStr | Seepage Model and Pressure Response Characteristics of Non-Orthogonal Multi-Fracture Vertical Wells with Superimposed Sand Body in Tight Gas Reservoirs |
| title_full_unstemmed | Seepage Model and Pressure Response Characteristics of Non-Orthogonal Multi-Fracture Vertical Wells with Superimposed Sand Body in Tight Gas Reservoirs |
| title_short | Seepage Model and Pressure Response Characteristics of Non-Orthogonal Multi-Fracture Vertical Wells with Superimposed Sand Body in Tight Gas Reservoirs |
| title_sort | seepage model and pressure response characteristics of non orthogonal multi fracture vertical wells with superimposed sand body in tight gas reservoirs |
| topic | tight gas superimposed sand body complex fracture seepage model pressure response |
| url | https://www.mdpi.com/1996-1073/16/21/7275 |
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