Experimental Investigation on Injection and Production Pattern in Fractured-Vuggy Carbonate Reservoirs
| Autor: | Shanshan Wu, Dongliang Lv, Aowei Li, Xiaobo Li, Ruixue Tang, Yongren Li, Juan He |
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| Rok vydání: | 2020 |
| Předmět: |
Gravity (chemistry)
Control and Optimization fractured-vuggy reservoirs physical model water flooding effect injection and production pattern gravity differentiation flow channel Flow (psychology) Residual oil Energy Engineering and Power Technology 02 engineering and technology 010502 geochemistry & geophysics lcsh:Technology 01 natural sciences chemistry.chemical_compound 020401 chemical engineering Cave 0204 chemical engineering Electrical and Electronic Engineering Engineering (miscellaneous) Injection well 0105 earth and related environmental sciences geography Physical model geography.geographical_feature_category Petroleum engineering lcsh:T Renewable Energy Sustainability and the Environment New production humanities chemistry Carbonate Geology Energy (miscellaneous) |
| Zdroj: | Energies; Volume 13; Issue 3; Pages: 603 Energies, Vol 13, Iss 3, p 603 (2020) |
| ISSN: | 1996-1073 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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