The mechanism of hydraulic fracturing assisted oil displacement to enhance oil recovery in low and medium permeability reservoirs
Aiming at the technology of hydraulic fracturing assisted oil displacement which combines hydraulic fracturing, seepage and oil displacement, an experimental system of energy storage and flowback in fracturing assisted oil displacement process has been developed and used to simulate the mechanism of...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2022-01-01
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| Series: | Petroleum Exploration and Development |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1876380422603161 |
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| author | Yikun LIU Fengjiao WANG Yumei WANG Binhui LI Dong ZHANG Guang YANG Jiqiang ZHI Shuo SUN Xu WANG Qingjun DENG He XU |
| author_facet | Yikun LIU Fengjiao WANG Yumei WANG Binhui LI Dong ZHANG Guang YANG Jiqiang ZHI Shuo SUN Xu WANG Qingjun DENG He XU |
| author_sort | Yikun LIU |
| collection | DOAJ |
| description | Aiming at the technology of hydraulic fracturing assisted oil displacement which combines hydraulic fracturing, seepage and oil displacement, an experimental system of energy storage and flowback in fracturing assisted oil displacement process has been developed and used to simulate the mechanism of percolation, energy storage, oil displacement and flowback of chemical agents in the whole process. The research shows that in hydraulic fracturing assisted oil displacement, the chemical agent could be directly pushed to the deeper area of the low and medium permeability reservoirs, avoiding the viscosity loss and adhesion retention of chemical agents near the pay zone; in addition, this technology could effectively enlarge the swept volume, improve the oil displacement efficiency, replenish formation energy, gather and exploit the scattered residual oil. For the reservoir with higher permeability, this measure takes effect fast, so to lower cost, and the high pressure hydraulic fracturing assisted oil displacement could be adopted directly. For the reservoir with lower permeability which is difficult to absorb water, hydraulic fracturing assisted oil displacement with surfactant should be adopted to reduce flow resistance of the reservoir and improve the water absorption capacity and development effect of the reservoir. The degree of formation energy deficit was the main factor affecting the effective swept range of chemical agents. Moreover, the larger the formation energy deficit was, the further the seepage distance of chemical agents was, accordingly, the larger the effective swept volume was, and the greater the increase of oil recovery was. Formation energy enhancement was the most important contribution to enhanced oil recovery (EOR), which was the key to EOR by the technology of hydraulic fracturing assisted oil displacement. |
| first_indexed | 2024-04-14T02:53:16Z |
| format | Article |
| id | doaj.art-1624199626114f9987c44c016a2baa8a |
| institution | Directory Open Access Journal |
| issn | 1876-3804 |
| language | English |
| last_indexed | 2024-04-14T02:53:16Z |
| publishDate | 2022-01-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Petroleum Exploration and Development |
| spelling | doaj.art-1624199626114f9987c44c016a2baa8a2022-12-22T02:16:12ZengKeAi Communications Co., Ltd.Petroleum Exploration and Development1876-38042022-01-01494864873The mechanism of hydraulic fracturing assisted oil displacement to enhance oil recovery in low and medium permeability reservoirsYikun LIU0Fengjiao WANG1Yumei WANG2Binhui LI3Dong ZHANG4Guang YANG5Jiqiang ZHI6Shuo SUN7Xu WANG8Qingjun DENG9He XU10Laboratory of Enhanced Oil Recovery of Education Ministry, Northeast Petroleum University, Daqing 163318, ChinaLaboratory of Enhanced Oil Recovery of Education Ministry, Northeast Petroleum University, Daqing 163318, China; Postdoctoral Res Ctr, Daqing Oilfield Company Limited, Daqing 163453, China; Corresponding authorDownhole Services Company of Daqing Oilfield Company Limited, Daqing 163453, ChinaExploration and Development Research Institute of Daqing Oilfield Company Limited, Daqing 163712, ChinaLaboratory of Enhanced Oil Recovery of Education Ministry, Northeast Petroleum University, Daqing 163318, China; Postdoctoral Res Ctr, Daqing Oilfield Company Limited, Daqing 163453, ChinaDownhole Services Company of Daqing Oilfield Company Limited, Daqing 163453, ChinaLaboratory of Enhanced Oil Recovery of Education Ministry, Northeast Petroleum University, Daqing 163318, ChinaLaboratory of Enhanced Oil Recovery of Education Ministry, Northeast Petroleum University, Daqing 163318, ChinaLaboratory of Enhanced Oil Recovery of Education Ministry, Northeast Petroleum University, Daqing 163318, ChinaThe NO.1 Production Plant of Daqing Oilfield Company Limited, Daqing 163712, ChinaLaboratory of Enhanced Oil Recovery of Education Ministry, Northeast Petroleum University, Daqing 163318, ChinaAiming at the technology of hydraulic fracturing assisted oil displacement which combines hydraulic fracturing, seepage and oil displacement, an experimental system of energy storage and flowback in fracturing assisted oil displacement process has been developed and used to simulate the mechanism of percolation, energy storage, oil displacement and flowback of chemical agents in the whole process. The research shows that in hydraulic fracturing assisted oil displacement, the chemical agent could be directly pushed to the deeper area of the low and medium permeability reservoirs, avoiding the viscosity loss and adhesion retention of chemical agents near the pay zone; in addition, this technology could effectively enlarge the swept volume, improve the oil displacement efficiency, replenish formation energy, gather and exploit the scattered residual oil. For the reservoir with higher permeability, this measure takes effect fast, so to lower cost, and the high pressure hydraulic fracturing assisted oil displacement could be adopted directly. For the reservoir with lower permeability which is difficult to absorb water, hydraulic fracturing assisted oil displacement with surfactant should be adopted to reduce flow resistance of the reservoir and improve the water absorption capacity and development effect of the reservoir. The degree of formation energy deficit was the main factor affecting the effective swept range of chemical agents. Moreover, the larger the formation energy deficit was, the further the seepage distance of chemical agents was, accordingly, the larger the effective swept volume was, and the greater the increase of oil recovery was. Formation energy enhancement was the most important contribution to enhanced oil recovery (EOR), which was the key to EOR by the technology of hydraulic fracturing assisted oil displacement.http://www.sciencedirect.com/science/article/pii/S1876380422603161hydraulic fracturingchemical floodingformation energy enhancementremaining oil distributionoil displacement mechanismenhancing oil recovery |
| spellingShingle | Yikun LIU Fengjiao WANG Yumei WANG Binhui LI Dong ZHANG Guang YANG Jiqiang ZHI Shuo SUN Xu WANG Qingjun DENG He XU The mechanism of hydraulic fracturing assisted oil displacement to enhance oil recovery in low and medium permeability reservoirs Petroleum Exploration and Development hydraulic fracturing chemical flooding formation energy enhancement remaining oil distribution oil displacement mechanism enhancing oil recovery |
| title | The mechanism of hydraulic fracturing assisted oil displacement to enhance oil recovery in low and medium permeability reservoirs |
| title_full | The mechanism of hydraulic fracturing assisted oil displacement to enhance oil recovery in low and medium permeability reservoirs |
| title_fullStr | The mechanism of hydraulic fracturing assisted oil displacement to enhance oil recovery in low and medium permeability reservoirs |
| title_full_unstemmed | The mechanism of hydraulic fracturing assisted oil displacement to enhance oil recovery in low and medium permeability reservoirs |
| title_short | The mechanism of hydraulic fracturing assisted oil displacement to enhance oil recovery in low and medium permeability reservoirs |
| title_sort | mechanism of hydraulic fracturing assisted oil displacement to enhance oil recovery in low and medium permeability reservoirs |
| topic | hydraulic fracturing chemical flooding formation energy enhancement remaining oil distribution oil displacement mechanism enhancing oil recovery |
| url | http://www.sciencedirect.com/science/article/pii/S1876380422603161 |
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