A novel type curve for estimating oil recovery factor of gas flooding
A novel type curve is presented for oil recovery factor prediction suitable for gas flooding by innovatively introducing the equivalent water-gas cut to replace the water cut, comprehensively considering the impact of three-phase flow (oil, gas, water), and deriving the theoretical equations of gas...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2022-06-01
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| Series: | Petroleum Exploration and Development |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1876380422600508 |
| _version_ | 1811343351090249728 |
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| author | Yong TANG Haochuan ZHANG Youwei HE Xiaodong GUO Kun FAN Zangyuan WU Daiyu ZHOU Zhengwu TAO Jinlong LI |
| author_facet | Yong TANG Haochuan ZHANG Youwei HE Xiaodong GUO Kun FAN Zangyuan WU Daiyu ZHOU Zhengwu TAO Jinlong LI |
| author_sort | Yong TANG |
| collection | DOAJ |
| description | A novel type curve is presented for oil recovery factor prediction suitable for gas flooding by innovatively introducing the equivalent water-gas cut to replace the water cut, comprehensively considering the impact of three-phase flow (oil, gas, water), and deriving the theoretical equations of gas flooding type curve based on Tong’s type curve. The equivalent water-gas cut is the ratio of the cumulative underground volume of gas and water production to the total underground volume of produced fluids. Field production data and the numerical simulation results are used to demonstrate the feasibility of the new type curve and verify the accuracy of the prediction results with field cases. The new type curve is suitable for oil recovery factor prediction of both water flooding and gas flooding. When a reservoir has no gas injected or produced, the gas phase can be ignored and only the oil and water phases need to be considered, in this case, this gas flooding type curve returns to the Tong’s type curve, which can evaluate the oil recovery factor of water flooding. For reservoirs with equivalent water-gas cuts of 60%—80%, the regression method of the new type curve works well in predicting the oil recovery factor. For reservoirs with equivalent water-gas cuts higher than 80%, both the regression and assignment methods of the new type curve can accurately predict the oil recovery factor of gas flooding. |
| first_indexed | 2024-04-13T19:27:49Z |
| format | Article |
| id | doaj.art-4d41109347d54d74bd4e796ed6fb1190 |
| institution | Directory Open Access Journal |
| issn | 1876-3804 |
| language | English |
| last_indexed | 2024-04-13T19:27:49Z |
| publishDate | 2022-06-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Petroleum Exploration and Development |
| spelling | doaj.art-4d41109347d54d74bd4e796ed6fb11902022-12-22T02:33:16ZengKeAi Communications Co., Ltd.Petroleum Exploration and Development1876-38042022-06-01493605613A novel type curve for estimating oil recovery factor of gas floodingYong TANG0Haochuan ZHANG1Youwei HE2Xiaodong GUO3Kun FAN4Zangyuan WU5Daiyu ZHOU6Zhengwu TAO7Jinlong LI8State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, ChinaState Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, ChinaState Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China; Corresponding authorResearch Institute, Shenzhen Branch Company, CNOOC Ltd., Shenzhen 518000, ChinaResearch Institute of Exploration and Development, PetroChina Tarim Oilfield Company, Korla 841000, ChinaResearch Institute of Exploration and Development, PetroChina Tarim Oilfield Company, Korla 841000, ChinaResearch Institute of Exploration and Development, PetroChina Tarim Oilfield Company, Korla 841000, ChinaResearch Institute of Exploration and Development, PetroChina Tarim Oilfield Company, Korla 841000, ChinaResearch Institute of Exploration and Development, PetroChina Jilin Oilfield Company, Songyuan 138000, ChinaA novel type curve is presented for oil recovery factor prediction suitable for gas flooding by innovatively introducing the equivalent water-gas cut to replace the water cut, comprehensively considering the impact of three-phase flow (oil, gas, water), and deriving the theoretical equations of gas flooding type curve based on Tong’s type curve. The equivalent water-gas cut is the ratio of the cumulative underground volume of gas and water production to the total underground volume of produced fluids. Field production data and the numerical simulation results are used to demonstrate the feasibility of the new type curve and verify the accuracy of the prediction results with field cases. The new type curve is suitable for oil recovery factor prediction of both water flooding and gas flooding. When a reservoir has no gas injected or produced, the gas phase can be ignored and only the oil and water phases need to be considered, in this case, this gas flooding type curve returns to the Tong’s type curve, which can evaluate the oil recovery factor of water flooding. For reservoirs with equivalent water-gas cuts of 60%—80%, the regression method of the new type curve works well in predicting the oil recovery factor. For reservoirs with equivalent water-gas cuts higher than 80%, both the regression and assignment methods of the new type curve can accurately predict the oil recovery factor of gas flooding.http://www.sciencedirect.com/science/article/pii/S1876380422600508gas flooding reservoirequivalent water-gas cuttype curve of gas floodingoil recovery factorprediction chartTong’s type curve |
| spellingShingle | Yong TANG Haochuan ZHANG Youwei HE Xiaodong GUO Kun FAN Zangyuan WU Daiyu ZHOU Zhengwu TAO Jinlong LI A novel type curve for estimating oil recovery factor of gas flooding Petroleum Exploration and Development gas flooding reservoir equivalent water-gas cut type curve of gas flooding oil recovery factor prediction chart Tong’s type curve |
| title | A novel type curve for estimating oil recovery factor of gas flooding |
| title_full | A novel type curve for estimating oil recovery factor of gas flooding |
| title_fullStr | A novel type curve for estimating oil recovery factor of gas flooding |
| title_full_unstemmed | A novel type curve for estimating oil recovery factor of gas flooding |
| title_short | A novel type curve for estimating oil recovery factor of gas flooding |
| title_sort | novel type curve for estimating oil recovery factor of gas flooding |
| topic | gas flooding reservoir equivalent water-gas cut type curve of gas flooding oil recovery factor prediction chart Tong’s type curve |
| url | http://www.sciencedirect.com/science/article/pii/S1876380422600508 |
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