Numerical simulation of hydraulic fracture propagation under energy supplement conditions
After the long-term production, due to the influence of low-pressure and low-stress fields in the near-well area, the reversion and propagation of new fractures after temporary plugging is short. It is difficult for the new fracture to extend to the remaining oil enrichment areas on both sides of th...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2023-12-01
|
| Series: | Frontiers in Earth Science |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2023.1269159/full |
| _version_ | 1827395813528043520 |
|---|---|
| author | Jingfeng Dong Hongyan Qu Hongyan Qu Hongyan Qu Jingchun Zhang Feipeng Han Fujian Zhou Fujian Zhou Fujian Zhou Peize Shi Peize Shi Jilong Shi Jilong Shi Tianxi Yu |
| author_facet | Jingfeng Dong Hongyan Qu Hongyan Qu Hongyan Qu Jingchun Zhang Feipeng Han Fujian Zhou Fujian Zhou Fujian Zhou Peize Shi Peize Shi Jilong Shi Jilong Shi Tianxi Yu |
| author_sort | Jingfeng Dong |
| collection | DOAJ |
| description | After the long-term production, due to the influence of low-pressure and low-stress fields in the near-well area, the reversion and propagation of new fractures after temporary plugging is short. It is difficult for the new fracture to extend to the remaining oil enrichment areas on both sides of the primary fractures, resulting in a low increase in the bandwidth of the fracture group after repeated fracturing, which affects the reservoir utilization. In the early stage of repeated fracturing, a large amount of pre-fracturing fluid is injected to supplement the energy of the fractures and rapidly increase the pore pressure in the local range, weakening rock strength and change the pore structure. In addition, the combination of energy replenishment and reservoir stimulation, coupled reconstruction of the seepage field and stress field, promotes the effective propagation of new fractures. However, in the process of increasing formation energy, the propagation law of hydraulic fractures and natural fractures is not clear. In this paper, the model of tight sandstone reservoir in the HQ block of Ordos Basin was established with the finite element software ABAQUS, based on the effective stress principle and the theoretical method of fluid-solid coupling numerical simulation. The propagation of a single hydraulic fracture and the interaction between hydraulic fracture and natural fracture under the condition of energy increase was investigated to better guide the field operation. The results show that for every 1 MPa pressure increase in a single hydraulic fracture, the fracture length increases by 0.62 m and the maximum fracture width decreases by 0.09 mm. When the formation energy increases by 6 MPa, the time for the hydraulic fracture to reach the intersection point with the natural fracture is shortened by 10 %, and the length of the natural fracture is 2.16 times compared with the case of 3 MPa energy increase. |
| first_indexed | 2024-03-08T18:40:15Z |
| format | Article |
| id | doaj.art-c35dc4d1d37442ec9f354590310489af |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-03-08T18:40:15Z |
| publishDate | 2023-12-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-c35dc4d1d37442ec9f354590310489af2023-12-29T08:56:51ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632023-12-011110.3389/feart.2023.12691591269159Numerical simulation of hydraulic fracture propagation under energy supplement conditionsJingfeng Dong0Hongyan Qu1Hongyan Qu2Hongyan Qu3Jingchun Zhang4Feipeng Han5Fujian Zhou6Fujian Zhou7Fujian Zhou8Peize Shi9Peize Shi10Jilong Shi11Jilong Shi12Tianxi Yu13Engineering Technology Research Institute, PetroChina Xinjiang Oilfield Company, Karamay, Xinjiang, ChinaNational Key Laboratory of Petroleum Resources and Engineering, China University of Petroleum, Beijing, ChinaUnconventional Petroleum Research Institute, China University of Petroleum, Beijing, ChinaCollege of Artificial Intelligence, China University of Petroleum, Beijing, ChinaEngineering Technology Research Institute, PetroChina Xinjiang Oilfield Company, Karamay, Xinjiang, ChinaEngineering Technology Research Institute, PetroChina Xinjiang Oilfield Company, Karamay, Xinjiang, ChinaNational Key Laboratory of Petroleum Resources and Engineering, China University of Petroleum, Beijing, ChinaUnconventional Petroleum Research Institute, China University of Petroleum, Beijing, ChinaCollege of Artificial Intelligence, China University of Petroleum, Beijing, ChinaNational Key Laboratory of Petroleum Resources and Engineering, China University of Petroleum, Beijing, ChinaUnconventional Petroleum Research Institute, China University of Petroleum, Beijing, ChinaNational Key Laboratory of Petroleum Resources and Engineering, China University of Petroleum, Beijing, ChinaUnconventional Petroleum Research Institute, China University of Petroleum, Beijing, ChinaEngineering Technology Research Institute, PetroChina Xinjiang Oilfield Company, Karamay, Xinjiang, ChinaAfter the long-term production, due to the influence of low-pressure and low-stress fields in the near-well area, the reversion and propagation of new fractures after temporary plugging is short. It is difficult for the new fracture to extend to the remaining oil enrichment areas on both sides of the primary fractures, resulting in a low increase in the bandwidth of the fracture group after repeated fracturing, which affects the reservoir utilization. In the early stage of repeated fracturing, a large amount of pre-fracturing fluid is injected to supplement the energy of the fractures and rapidly increase the pore pressure in the local range, weakening rock strength and change the pore structure. In addition, the combination of energy replenishment and reservoir stimulation, coupled reconstruction of the seepage field and stress field, promotes the effective propagation of new fractures. However, in the process of increasing formation energy, the propagation law of hydraulic fractures and natural fractures is not clear. In this paper, the model of tight sandstone reservoir in the HQ block of Ordos Basin was established with the finite element software ABAQUS, based on the effective stress principle and the theoretical method of fluid-solid coupling numerical simulation. The propagation of a single hydraulic fracture and the interaction between hydraulic fracture and natural fracture under the condition of energy increase was investigated to better guide the field operation. The results show that for every 1 MPa pressure increase in a single hydraulic fracture, the fracture length increases by 0.62 m and the maximum fracture width decreases by 0.09 mm. When the formation energy increases by 6 MPa, the time for the hydraulic fracture to reach the intersection point with the natural fracture is shortened by 10 %, and the length of the natural fracture is 2.16 times compared with the case of 3 MPa energy increase.https://www.frontiersin.org/articles/10.3389/feart.2023.1269159/fullenergized fracturinghydraulic fracturesnumerical simulationfluid-solid couplingABAQUS |
| spellingShingle | Jingfeng Dong Hongyan Qu Hongyan Qu Hongyan Qu Jingchun Zhang Feipeng Han Fujian Zhou Fujian Zhou Fujian Zhou Peize Shi Peize Shi Jilong Shi Jilong Shi Tianxi Yu Numerical simulation of hydraulic fracture propagation under energy supplement conditions Frontiers in Earth Science energized fracturing hydraulic fractures numerical simulation fluid-solid coupling ABAQUS |
| title | Numerical simulation of hydraulic fracture propagation under energy supplement conditions |
| title_full | Numerical simulation of hydraulic fracture propagation under energy supplement conditions |
| title_fullStr | Numerical simulation of hydraulic fracture propagation under energy supplement conditions |
| title_full_unstemmed | Numerical simulation of hydraulic fracture propagation under energy supplement conditions |
| title_short | Numerical simulation of hydraulic fracture propagation under energy supplement conditions |
| title_sort | numerical simulation of hydraulic fracture propagation under energy supplement conditions |
| topic | energized fracturing hydraulic fractures numerical simulation fluid-solid coupling ABAQUS |
| url | https://www.frontiersin.org/articles/10.3389/feart.2023.1269159/full |
| work_keys_str_mv | AT jingfengdong numericalsimulationofhydraulicfracturepropagationunderenergysupplementconditions AT hongyanqu numericalsimulationofhydraulicfracturepropagationunderenergysupplementconditions AT hongyanqu numericalsimulationofhydraulicfracturepropagationunderenergysupplementconditions AT hongyanqu numericalsimulationofhydraulicfracturepropagationunderenergysupplementconditions AT jingchunzhang numericalsimulationofhydraulicfracturepropagationunderenergysupplementconditions AT feipenghan numericalsimulationofhydraulicfracturepropagationunderenergysupplementconditions AT fujianzhou numericalsimulationofhydraulicfracturepropagationunderenergysupplementconditions AT fujianzhou numericalsimulationofhydraulicfracturepropagationunderenergysupplementconditions AT fujianzhou numericalsimulationofhydraulicfracturepropagationunderenergysupplementconditions AT peizeshi numericalsimulationofhydraulicfracturepropagationunderenergysupplementconditions AT peizeshi numericalsimulationofhydraulicfracturepropagationunderenergysupplementconditions AT jilongshi numericalsimulationofhydraulicfracturepropagationunderenergysupplementconditions AT jilongshi numericalsimulationofhydraulicfracturepropagationunderenergysupplementconditions AT tianxiyu numericalsimulationofhydraulicfracturepropagationunderenergysupplementconditions |