Material Balance Equation for Fractured Vuggy Reservoirs with Aquifer Multiples: Case Study of Fuman Oilfield
Accurate dynamic reserve estimation is essential for effective reservoir development, particularly in fractured vuggy carbonate reservoirs characterized by complex pore structures, multiple spatial scales, and pronounced heterogeneity. Traditional reserve evaluation methods often struggle to account...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-07-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/18/13/3550 |
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| author | Xingliang Deng Zhiliang Liu Peng Wang Zhouhua Wang Peng Wang Hanmin Tu Jun Li Yao Ding |
| author_facet | Xingliang Deng Zhiliang Liu Peng Wang Zhouhua Wang Peng Wang Hanmin Tu Jun Li Yao Ding |
| author_sort | Xingliang Deng |
| collection | DOAJ |
| description | Accurate dynamic reserve estimation is essential for effective reservoir development, particularly in fractured vuggy carbonate reservoirs characterized by complex pore structures, multiple spatial scales, and pronounced heterogeneity. Traditional reserve evaluation methods often struggle to account for the coupled behavior of pores, fractures, and vugs, leading to limited reliability. In this study, a modified material balance equation is proposed that explicitly considers the contributions of matrix pores, fractures, and vugs, as well as the influence of varying aquifer multiples. To validate the model, physical experiments were conducted using cores with different fracture–vug configurations under five distinct aquifer multiples. A field case analysis was also performed using production data from representative wells in the Fuman Oilfield. The results demonstrate that the proposed model achieves a fitting accuracy exceeding 94%, effectively capturing the dynamics of fractured vuggy systems with active water drive. The model enables quantitative evaluation of single-well reserves and aquifer multiples, providing a reliable basis for estimating effective recoverable reserves. Furthermore, by comparing simulated formation pressures (excluding aquifer effects) with actual static pressures, the contribution of external aquifer support to reservoir energy can be quantitatively assessed. This approach offers a practical and robust framework for reserve estimation, pressure diagnosis, and development strategy optimization in strongly water-driven fractured vuggy reservoirs. |
| format | Article |
| id | doaj-art-c6fd276cf100405c91622dca7733d766 |
| institution | Kabale University |
| issn | 1996-1073 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj-art-c6fd276cf100405c91622dca7733d7662025-08-20T03:50:21ZengMDPI AGEnergies1996-10732025-07-011813355010.3390/en18133550Material Balance Equation for Fractured Vuggy Reservoirs with Aquifer Multiples: Case Study of Fuman OilfieldXingliang Deng0Zhiliang Liu1Peng Wang2Zhouhua Wang3Peng Wang4Hanmin Tu5Jun Li6Yao Ding7PetroChina Tarim Oilfield Company, Korla 841000, ChinaPetroChina Tarim Oilfield Company, Korla 841000, ChinaPetroChina Tarim Oilfield Company, Korla 841000, ChinaState Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, ChinaPetroChina Tarim Oilfield Company, Korla 841000, ChinaState Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, ChinaPetroChina Tarim Oilfield Company, Korla 841000, ChinaPetroChina Tarim Oilfield Company, Korla 841000, ChinaAccurate dynamic reserve estimation is essential for effective reservoir development, particularly in fractured vuggy carbonate reservoirs characterized by complex pore structures, multiple spatial scales, and pronounced heterogeneity. Traditional reserve evaluation methods often struggle to account for the coupled behavior of pores, fractures, and vugs, leading to limited reliability. In this study, a modified material balance equation is proposed that explicitly considers the contributions of matrix pores, fractures, and vugs, as well as the influence of varying aquifer multiples. To validate the model, physical experiments were conducted using cores with different fracture–vug configurations under five distinct aquifer multiples. A field case analysis was also performed using production data from representative wells in the Fuman Oilfield. The results demonstrate that the proposed model achieves a fitting accuracy exceeding 94%, effectively capturing the dynamics of fractured vuggy systems with active water drive. The model enables quantitative evaluation of single-well reserves and aquifer multiples, providing a reliable basis for estimating effective recoverable reserves. Furthermore, by comparing simulated formation pressures (excluding aquifer effects) with actual static pressures, the contribution of external aquifer support to reservoir energy can be quantitatively assessed. This approach offers a practical and robust framework for reserve estimation, pressure diagnosis, and development strategy optimization in strongly water-driven fractured vuggy reservoirs.https://www.mdpi.com/1996-1073/18/13/3550fractured vuggy reservoirwater floodingmaterial balance equationreserve |
| spellingShingle | Xingliang Deng Zhiliang Liu Peng Wang Zhouhua Wang Peng Wang Hanmin Tu Jun Li Yao Ding Material Balance Equation for Fractured Vuggy Reservoirs with Aquifer Multiples: Case Study of Fuman Oilfield Energies fractured vuggy reservoir water flooding material balance equation reserve |
| title | Material Balance Equation for Fractured Vuggy Reservoirs with Aquifer Multiples: Case Study of Fuman Oilfield |
| title_full | Material Balance Equation for Fractured Vuggy Reservoirs with Aquifer Multiples: Case Study of Fuman Oilfield |
| title_fullStr | Material Balance Equation for Fractured Vuggy Reservoirs with Aquifer Multiples: Case Study of Fuman Oilfield |
| title_full_unstemmed | Material Balance Equation for Fractured Vuggy Reservoirs with Aquifer Multiples: Case Study of Fuman Oilfield |
| title_short | Material Balance Equation for Fractured Vuggy Reservoirs with Aquifer Multiples: Case Study of Fuman Oilfield |
| title_sort | material balance equation for fractured vuggy reservoirs with aquifer multiples case study of fuman oilfield |
| topic | fractured vuggy reservoir water flooding material balance equation reserve |
| url | https://www.mdpi.com/1996-1073/18/13/3550 |
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