Simulation and Optimization of Dynamic Fracture Parameters for an Inverted Square Nine-Spot Well Pattern in Tight Fractured Oil Reservoirs
Dynamic fractures are a geological attribute of water flooding development in tight fractured oil reservoirs. However, previous studies have mainly focused on the opening mechanism of dynamic fractures and the influence of dynamic fractures on development. Few attempts have been made to investigate...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2020/8883803 |
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| _version_ | 1832553502505697280 |
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| author | Le Jiang Peng Gao Jie Liu Yunbin Xiong Jing Jiang Ruizhong Jia Zhongchao Li Pengcheng Liu |
| author_facet | Le Jiang Peng Gao Jie Liu Yunbin Xiong Jing Jiang Ruizhong Jia Zhongchao Li Pengcheng Liu |
| author_sort | Le Jiang |
| collection | DOAJ |
| description | Dynamic fractures are a geological attribute of water flooding development in tight fractured oil reservoirs. However, previous studies have mainly focused on the opening mechanism of dynamic fractures and the influence of dynamic fractures on development. Few attempts have been made to investigate the optimization of the dynamic fracture parameter. In this study, the inverted square nine-spot well pattern model is established by taking fractured reservoir’s heterogeneity and its threshold pressure gradients into account. This simulation model optimizes the various parameters in a tight fractured oil reservoir with dynamic fractures, that is, the intersection angle between the dynamic fractures and the well array, the number of dynamic fractures, the penetration ratio, and the conductivity of the oil well’s hydraulic fractures. The results of this optimization are used to investigate the oil displacement mechanism of dynamic fractures and to discuss a mechanism to enhance oil recovery using an inverted square nine-spot well pattern. The simulation results indicate that a 45° intersection angle can effectively restrain the increase in the water cut. A single dynamic fracture can effectively control the displacement direction of the injected water and improve the oil displacement efficiency. Moreover, the optimal penetration ratio and the conductivity of the hydraulic fracture are 0.6 and 40 D-cm, respectively. |
| format | Article |
| id | doaj-art-d59a69ac795241658d7e5e57da46c2d6 |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-d59a69ac795241658d7e5e57da46c2d62025-02-03T05:53:52ZengWileyGeofluids1468-81151468-81232020-01-01202010.1155/2020/88838038883803Simulation and Optimization of Dynamic Fracture Parameters for an Inverted Square Nine-Spot Well Pattern in Tight Fractured Oil ReservoirsLe Jiang0Peng Gao1Jie Liu2Yunbin Xiong3Jing Jiang4Ruizhong Jia5Zhongchao Li6Pengcheng Liu7School of Energy Resources, China University of Geosciences, Beijing 100083, ChinaResearch Institute of Petroleum Exploration and Development of Zhongyuan Oilfields, SINOPEC, Puyang 457100, ChinaSchool of Energy Resources, China University of Geosciences, Beijing 100083, ChinaResearch Institute of Petroleum Exploration and Development of Zhongyuan Oilfields, SINOPEC, Puyang 457100, ChinaTianjin Branch of CNOOC (China) Co., Ltd., Tianjin 300000, ChinaResearch Institute of Petroleum Exploration and Development of Zhongyuan Oilfields, SINOPEC, Puyang 457100, ChinaResearch Institute of Petroleum Exploration and Development of Zhongyuan Oilfields, SINOPEC, Puyang 457100, ChinaSchool of Energy Resources, China University of Geosciences, Beijing 100083, ChinaDynamic fractures are a geological attribute of water flooding development in tight fractured oil reservoirs. However, previous studies have mainly focused on the opening mechanism of dynamic fractures and the influence of dynamic fractures on development. Few attempts have been made to investigate the optimization of the dynamic fracture parameter. In this study, the inverted square nine-spot well pattern model is established by taking fractured reservoir’s heterogeneity and its threshold pressure gradients into account. This simulation model optimizes the various parameters in a tight fractured oil reservoir with dynamic fractures, that is, the intersection angle between the dynamic fractures and the well array, the number of dynamic fractures, the penetration ratio, and the conductivity of the oil well’s hydraulic fractures. The results of this optimization are used to investigate the oil displacement mechanism of dynamic fractures and to discuss a mechanism to enhance oil recovery using an inverted square nine-spot well pattern. The simulation results indicate that a 45° intersection angle can effectively restrain the increase in the water cut. A single dynamic fracture can effectively control the displacement direction of the injected water and improve the oil displacement efficiency. Moreover, the optimal penetration ratio and the conductivity of the hydraulic fracture are 0.6 and 40 D-cm, respectively.http://dx.doi.org/10.1155/2020/8883803 |
| spellingShingle | Le Jiang Peng Gao Jie Liu Yunbin Xiong Jing Jiang Ruizhong Jia Zhongchao Li Pengcheng Liu Simulation and Optimization of Dynamic Fracture Parameters for an Inverted Square Nine-Spot Well Pattern in Tight Fractured Oil Reservoirs Geofluids |
| title | Simulation and Optimization of Dynamic Fracture Parameters for an Inverted Square Nine-Spot Well Pattern in Tight Fractured Oil Reservoirs |
| title_full | Simulation and Optimization of Dynamic Fracture Parameters for an Inverted Square Nine-Spot Well Pattern in Tight Fractured Oil Reservoirs |
| title_fullStr | Simulation and Optimization of Dynamic Fracture Parameters for an Inverted Square Nine-Spot Well Pattern in Tight Fractured Oil Reservoirs |
| title_full_unstemmed | Simulation and Optimization of Dynamic Fracture Parameters for an Inverted Square Nine-Spot Well Pattern in Tight Fractured Oil Reservoirs |
| title_short | Simulation and Optimization of Dynamic Fracture Parameters for an Inverted Square Nine-Spot Well Pattern in Tight Fractured Oil Reservoirs |
| title_sort | simulation and optimization of dynamic fracture parameters for an inverted square nine spot well pattern in tight fractured oil reservoirs |
| url | http://dx.doi.org/10.1155/2020/8883803 |
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