Experimental Investigation on Injection and Production Pattern in Fractured-Vuggy Carbonate Reservoirs
To constitute and adjust the injection and production pattern in fractured-vuggy reservoirs, we extracted twelve fractured-cave structures, fabricated them into physical models with acrylic plates, and performed experiments via these models. The results show that utilizing oil/water gravity segregat...
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| Format: | Article |
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MDPI AG
2020-01-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/3/603 |
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| author | Juan He Aowei Li Shanshan Wu Ruixue Tang Dongliang Lv Yongren Li Xiaobo Li |
| author_facet | Juan He Aowei Li Shanshan Wu Ruixue Tang Dongliang Lv Yongren Li Xiaobo Li |
| author_sort | Juan He |
| collection | DOAJ |
| description | To constitute and adjust the injection and production pattern in fractured-vuggy reservoirs, we extracted twelve fractured-cave structures, fabricated them into physical models with acrylic plates, and performed experiments via these models. The results show that utilizing oil/water gravity segregation sufficiently and forming valid flow channels should be emphasized. Preferentially exploiting the reservoir body containing intermediate-scaled or large-scaled caves, arranging injection wells in fractures or small-scaled caves while placing production wells in large-scaled caves, and separately putting injection wells and production wells in low/high parts of an intermediate-scaled or large-scaled cave, were found to benefit oil/water gravity segregation and thus gain a better water flooding effect in these experiments. Experiments with combined models also figured out that, after adjusting the injection and production pattern, the valid flow channel newly formed must pass through caves containing enough residual oil to improve the water flooding effect and could be obtained by shutting down the old production well while adding a new production well, adding a new production well, or switching the production well into an injection well while adding a new production well. In the actual field, adjusting the well location and altering the flow channel were proposed to conduct together. This study may provide references on the production management of analogous reservoirs. |
| first_indexed | 2024-12-10T06:44:27Z |
| format | Article |
| id | doaj.art-c87d3027695e49f5862f0a212aa8a308 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-12-10T06:44:27Z |
| publishDate | 2020-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-c87d3027695e49f5862f0a212aa8a3082022-12-22T01:58:42ZengMDPI AGEnergies1996-10732020-01-0113360310.3390/en13030603en13030603Experimental Investigation on Injection and Production Pattern in Fractured-Vuggy Carbonate ReservoirsJuan He0Aowei Li1Shanshan Wu2Ruixue Tang3Dongliang Lv4Yongren Li5Xiaobo Li6Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, CAS, Guangzhou 510640, ChinaState Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, ChinaState Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, ChinaState Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, ChinaState Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, ChinaState Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, ChinaResearch Institute of Petroleum Engineering and Technology, Northwest Oilfield Company, Sinopec, Urumqi 830011, ChinaTo constitute and adjust the injection and production pattern in fractured-vuggy reservoirs, we extracted twelve fractured-cave structures, fabricated them into physical models with acrylic plates, and performed experiments via these models. The results show that utilizing oil/water gravity segregation sufficiently and forming valid flow channels should be emphasized. Preferentially exploiting the reservoir body containing intermediate-scaled or large-scaled caves, arranging injection wells in fractures or small-scaled caves while placing production wells in large-scaled caves, and separately putting injection wells and production wells in low/high parts of an intermediate-scaled or large-scaled cave, were found to benefit oil/water gravity segregation and thus gain a better water flooding effect in these experiments. Experiments with combined models also figured out that, after adjusting the injection and production pattern, the valid flow channel newly formed must pass through caves containing enough residual oil to improve the water flooding effect and could be obtained by shutting down the old production well while adding a new production well, adding a new production well, or switching the production well into an injection well while adding a new production well. In the actual field, adjusting the well location and altering the flow channel were proposed to conduct together. This study may provide references on the production management of analogous reservoirs.https://www.mdpi.com/1996-1073/13/3/603fractured-vuggy reservoirsphysical modelwater flooding effectinjection and production patterngravity differentiationflow channel |
| spellingShingle | Juan He Aowei Li Shanshan Wu Ruixue Tang Dongliang Lv Yongren Li Xiaobo Li Experimental Investigation on Injection and Production Pattern in Fractured-Vuggy Carbonate Reservoirs Energies fractured-vuggy reservoirs physical model water flooding effect injection and production pattern gravity differentiation flow channel |
| title | Experimental Investigation on Injection and Production Pattern in Fractured-Vuggy Carbonate Reservoirs |
| title_full | Experimental Investigation on Injection and Production Pattern in Fractured-Vuggy Carbonate Reservoirs |
| title_fullStr | Experimental Investigation on Injection and Production Pattern in Fractured-Vuggy Carbonate Reservoirs |
| title_full_unstemmed | Experimental Investigation on Injection and Production Pattern in Fractured-Vuggy Carbonate Reservoirs |
| title_short | Experimental Investigation on Injection and Production Pattern in Fractured-Vuggy Carbonate Reservoirs |
| title_sort | experimental investigation on injection and production pattern in fractured vuggy carbonate reservoirs |
| topic | fractured-vuggy reservoirs physical model water flooding effect injection and production pattern gravity differentiation flow channel |
| url | https://www.mdpi.com/1996-1073/13/3/603 |
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