Physical and numerical simulation of inter-fracture flooding in heterogeneous tight oil reservoirs
The existing tight oil reservoirs are mainly developed after hydraulic fracturing of horizontal Wells with low recovery. Traditional enhanced oil recovery (EOR) methods are difficult to apply in tight reservoirs, because huff-puff drives oil to the distal end, water breakthrough exists in inter-well...
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-11-01
|
| Series: | Energy Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352484722019217 |
| _version_ | 1797901868692668416 |
|---|---|
| author | Yi Yang Guangzhi Liao Wei Xiong Rui Shen Jie Zhang Qi Li Shengzhou Wang Jianzhong Zhang Lingfang Tan Guoyong Shao |
| author_facet | Yi Yang Guangzhi Liao Wei Xiong Rui Shen Jie Zhang Qi Li Shengzhou Wang Jianzhong Zhang Lingfang Tan Guoyong Shao |
| author_sort | Yi Yang |
| collection | DOAJ |
| description | The existing tight oil reservoirs are mainly developed after hydraulic fracturing of horizontal Wells with low recovery. Traditional enhanced oil recovery (EOR) methods are difficult to apply in tight reservoirs, because huff-puff drives oil to the distal end, water breakthrough exists in inter-well flooding, and ASP flooding cannot enter the small pore throat of the tight reservoir. A new EOR method of inter-fracture flooding is proposed. This method solves the problem that the injection water cannot enter the matrix in tight reservoir by inter-fracture flooding. Inter-fracture flooding reduces the distance between the injection and production ends and reduces the risk of water channeling. Inter-fracture flooding increases the pressure gradient during water flooding in the reservoir and establishes an effective water displacement system in the heterogeneous tight reservoir. In this paper, physical simulation experiments and numerical simulation are designed to study the EOR effect of inter-fracture water flooding in heterogeneous tight reservoirs. The results showed the following: (1) Inter-fracture asynchronous water flooding (IFAWF) can improve oil displacement efficiency by 6%–16% compared with inter-fracture synchronous water flooding (IFSWF). (2) Compared with IFSWF, IFAWF can greatly improve the oil displacement efficiency of the core with low permeability in the heterogeneous model by more than 20%. (3) Effective water sweep cannot be achieved by IFSWF, but can be achieved by IFAWF. (4) IFAWF established effective displacement in 0.1mD tight heterogeneous reservoir. Studies have shown that inter-fracture flooding can lower the reservoir development permeability threshold and will be an important EOR method for tight oil and shale oil in the future. |
| first_indexed | 2024-04-10T09:08:45Z |
| format | Article |
| id | doaj.art-63c1fa88ce7a44b7a6b2a2dba6bc5458 |
| institution | Directory Open Access Journal |
| issn | 2352-4847 |
| language | English |
| last_indexed | 2024-04-10T09:08:45Z |
| publishDate | 2022-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Energy Reports |
| spelling | doaj.art-63c1fa88ce7a44b7a6b2a2dba6bc54582023-02-21T05:13:57ZengElsevierEnergy Reports2352-48472022-11-0181297012978Physical and numerical simulation of inter-fracture flooding in heterogeneous tight oil reservoirsYi Yang0Guangzhi Liao1Wei Xiong2Rui Shen3Jie Zhang4Qi Li5Shengzhou Wang6Jianzhong Zhang7Lingfang Tan8Guoyong Shao9University of Chinese Academy of Sciences, 100049, Beijing, China; Company Limited of Research Institute of Petroleum Exploration & Development, China National Petroleum Corporation, 100083, Beijing, China; Corresponding author at: University of Chinese Academy of Sciences, 100049, Beijing, China.PetroChina Exploration & Production Company, Beijing 100120, ChinaCompany Limited of Research Institute of Petroleum Exploration & Development, China National Petroleum Corporation, 100083, Beijing, ChinaCompany Limited of Research Institute of Petroleum Exploration & Development, China National Petroleum Corporation, 100083, Beijing, ChinaSchool of Petroleum Engineering, Chongqing University of Science and Technology, 401331, Chongqing, ChinaUniversity of Chinese Academy of Sciences, 100049, Beijing, China; Company Limited of Research Institute of Petroleum Exploration & Development, China National Petroleum Corporation, 100083, Beijing, ChinaChina National Oil and Gas Exploration and Development Co., Ltd. (CNODC), Beijing, 100034, ChinaUniversity of Chinese Academy of Sciences, 100049, Beijing, China; Company Limited of Research Institute of Petroleum Exploration & Development, China National Petroleum Corporation, 100083, Beijing, ChinaUniversity of Chinese Academy of Sciences, 100049, Beijing, China; Company Limited of Research Institute of Petroleum Exploration & Development, China National Petroleum Corporation, 100083, Beijing, ChinaUniversity of Chinese Academy of Sciences, 100049, Beijing, China; Company Limited of Research Institute of Petroleum Exploration & Development, China National Petroleum Corporation, 100083, Beijing, ChinaThe existing tight oil reservoirs are mainly developed after hydraulic fracturing of horizontal Wells with low recovery. Traditional enhanced oil recovery (EOR) methods are difficult to apply in tight reservoirs, because huff-puff drives oil to the distal end, water breakthrough exists in inter-well flooding, and ASP flooding cannot enter the small pore throat of the tight reservoir. A new EOR method of inter-fracture flooding is proposed. This method solves the problem that the injection water cannot enter the matrix in tight reservoir by inter-fracture flooding. Inter-fracture flooding reduces the distance between the injection and production ends and reduces the risk of water channeling. Inter-fracture flooding increases the pressure gradient during water flooding in the reservoir and establishes an effective water displacement system in the heterogeneous tight reservoir. In this paper, physical simulation experiments and numerical simulation are designed to study the EOR effect of inter-fracture water flooding in heterogeneous tight reservoirs. The results showed the following: (1) Inter-fracture asynchronous water flooding (IFAWF) can improve oil displacement efficiency by 6%–16% compared with inter-fracture synchronous water flooding (IFSWF). (2) Compared with IFSWF, IFAWF can greatly improve the oil displacement efficiency of the core with low permeability in the heterogeneous model by more than 20%. (3) Effective water sweep cannot be achieved by IFSWF, but can be achieved by IFAWF. (4) IFAWF established effective displacement in 0.1mD tight heterogeneous reservoir. Studies have shown that inter-fracture flooding can lower the reservoir development permeability threshold and will be an important EOR method for tight oil and shale oil in the future.http://www.sciencedirect.com/science/article/pii/S2352484722019217Tight oil reservoirHeterogeneous reservoirEnhance oil recoveryInter-fracture floodingPhysical simulationNumerical simulation |
| spellingShingle | Yi Yang Guangzhi Liao Wei Xiong Rui Shen Jie Zhang Qi Li Shengzhou Wang Jianzhong Zhang Lingfang Tan Guoyong Shao Physical and numerical simulation of inter-fracture flooding in heterogeneous tight oil reservoirs Energy Reports Tight oil reservoir Heterogeneous reservoir Enhance oil recovery Inter-fracture flooding Physical simulation Numerical simulation |
| title | Physical and numerical simulation of inter-fracture flooding in heterogeneous tight oil reservoirs |
| title_full | Physical and numerical simulation of inter-fracture flooding in heterogeneous tight oil reservoirs |
| title_fullStr | Physical and numerical simulation of inter-fracture flooding in heterogeneous tight oil reservoirs |
| title_full_unstemmed | Physical and numerical simulation of inter-fracture flooding in heterogeneous tight oil reservoirs |
| title_short | Physical and numerical simulation of inter-fracture flooding in heterogeneous tight oil reservoirs |
| title_sort | physical and numerical simulation of inter fracture flooding in heterogeneous tight oil reservoirs |
| topic | Tight oil reservoir Heterogeneous reservoir Enhance oil recovery Inter-fracture flooding Physical simulation Numerical simulation |
| url | http://www.sciencedirect.com/science/article/pii/S2352484722019217 |
| work_keys_str_mv | AT yiyang physicalandnumericalsimulationofinterfracturefloodinginheterogeneoustightoilreservoirs AT guangzhiliao physicalandnumericalsimulationofinterfracturefloodinginheterogeneoustightoilreservoirs AT weixiong physicalandnumericalsimulationofinterfracturefloodinginheterogeneoustightoilreservoirs AT ruishen physicalandnumericalsimulationofinterfracturefloodinginheterogeneoustightoilreservoirs AT jiezhang physicalandnumericalsimulationofinterfracturefloodinginheterogeneoustightoilreservoirs AT qili physicalandnumericalsimulationofinterfracturefloodinginheterogeneoustightoilreservoirs AT shengzhouwang physicalandnumericalsimulationofinterfracturefloodinginheterogeneoustightoilreservoirs AT jianzhongzhang physicalandnumericalsimulationofinterfracturefloodinginheterogeneoustightoilreservoirs AT lingfangtan physicalandnumericalsimulationofinterfracturefloodinginheterogeneoustightoilreservoirs AT guoyongshao physicalandnumericalsimulationofinterfracturefloodinginheterogeneoustightoilreservoirs |