Optimization of integrated geological-engineering design of volume fracturing with fan-shaped well pattern
According to the variable toe-to-heel well spacing, combined with the dislocation theory, discrete lattice method, and finite-element-method (FEM) based fluid-solid coupling, an integrated geological-engineering method of volume fracturing for fan-shaped well pattern is proposed considering the geom...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2023-08-01
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| Series: | Petroleum Exploration and Development |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1876380423604422 |
| _version_ | 1797740837831966720 |
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| author | Jizhou TANG Xiaohua WANG Xianfei DU Bing MA Fengshou ZHANG |
| author_facet | Jizhou TANG Xiaohua WANG Xianfei DU Bing MA Fengshou ZHANG |
| author_sort | Jizhou TANG |
| collection | DOAJ |
| description | According to the variable toe-to-heel well spacing, combined with the dislocation theory, discrete lattice method, and finite-element-method (FEM) based fluid-solid coupling, an integrated geological-engineering method of volume fracturing for fan-shaped well pattern is proposed considering the geomechanical modeling, induced stress calculation, hydraulic fracturing simulation, and post-frac productivity evaluation. Besides, we propose the differential fracturing design for the conventional productivity-area and the potential production area for fan-shaped horizontal wells. After the fracturing of the conventional production area for H1 fan-shaped well platform, the research shows that the maximum reduction of the horizontal principal stress difference in the potential productivity-area is 0.2 MPa, which cannot cause the stress reversal, but this reduction is still conducive to the lateral propagation of hydraulic fractures. According to the optimized fracturing design, in zone-I of the potential production area, only Well 2 is fractured, with a cluster spacing of 30 m and an injection rate of 12 m3/min per stage; in zone-II, Well 2 is fractured before Well 3, with a cluster spacing of 30 m and an injection rate of 12 m3/min per stage. The swept area of the pore pressure drop in the potential production area is small, showing that the reservoir is not well developed. The hydraulic fracturing in the toe area can be improved by, for example, properly densifying the fractures and adjusting the fracture distribution, in order to enhance the swept volume and increase the reservoir utilization. |
| first_indexed | 2024-03-12T14:18:09Z |
| format | Article |
| id | doaj.art-2919bb9d2f6b41a4896ccb7002dd0b60 |
| institution | Directory Open Access Journal |
| issn | 1876-3804 |
| language | English |
| last_indexed | 2024-03-12T14:18:09Z |
| publishDate | 2023-08-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Petroleum Exploration and Development |
| spelling | doaj.art-2919bb9d2f6b41a4896ccb7002dd0b602023-08-20T04:37:41ZengKeAi Communications Co., Ltd.Petroleum Exploration and Development1876-38042023-08-01504971978Optimization of integrated geological-engineering design of volume fracturing with fan-shaped well patternJizhou TANG0Xiaohua WANG1Xianfei DU2Bing MA3Fengshou ZHANG4School of Ocean and Earth Science, Tongji University, Shanghai 200092, China; State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092, ChinaCollege of Civil Engineering, Tongji University, Shanghai 200092, China; Key Laboratory of Geotechnical & Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, ChinaOil & Gas Technology Research Institute of PetroChina Changqing Oilfield Company, Xi’an 710021, ChinaOil & Gas Technology Research Institute of PetroChina Changqing Oilfield Company, Xi’an 710021, ChinaCollege of Civil Engineering, Tongji University, Shanghai 200092, China; Key Laboratory of Geotechnical & Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China; Corresponding authorAccording to the variable toe-to-heel well spacing, combined with the dislocation theory, discrete lattice method, and finite-element-method (FEM) based fluid-solid coupling, an integrated geological-engineering method of volume fracturing for fan-shaped well pattern is proposed considering the geomechanical modeling, induced stress calculation, hydraulic fracturing simulation, and post-frac productivity evaluation. Besides, we propose the differential fracturing design for the conventional productivity-area and the potential production area for fan-shaped horizontal wells. After the fracturing of the conventional production area for H1 fan-shaped well platform, the research shows that the maximum reduction of the horizontal principal stress difference in the potential productivity-area is 0.2 MPa, which cannot cause the stress reversal, but this reduction is still conducive to the lateral propagation of hydraulic fractures. According to the optimized fracturing design, in zone-I of the potential production area, only Well 2 is fractured, with a cluster spacing of 30 m and an injection rate of 12 m3/min per stage; in zone-II, Well 2 is fractured before Well 3, with a cluster spacing of 30 m and an injection rate of 12 m3/min per stage. The swept area of the pore pressure drop in the potential production area is small, showing that the reservoir is not well developed. The hydraulic fracturing in the toe area can be improved by, for example, properly densifying the fractures and adjusting the fracture distribution, in order to enhance the swept volume and increase the reservoir utilization.http://www.sciencedirect.com/science/article/pii/S1876380423604422shale oilfan-shaped well patternhorizontal wellgeological modelhydraulic fracturingproductivity evaluation |
| spellingShingle | Jizhou TANG Xiaohua WANG Xianfei DU Bing MA Fengshou ZHANG Optimization of integrated geological-engineering design of volume fracturing with fan-shaped well pattern Petroleum Exploration and Development shale oil fan-shaped well pattern horizontal well geological model hydraulic fracturing productivity evaluation |
| title | Optimization of integrated geological-engineering design of volume fracturing with fan-shaped well pattern |
| title_full | Optimization of integrated geological-engineering design of volume fracturing with fan-shaped well pattern |
| title_fullStr | Optimization of integrated geological-engineering design of volume fracturing with fan-shaped well pattern |
| title_full_unstemmed | Optimization of integrated geological-engineering design of volume fracturing with fan-shaped well pattern |
| title_short | Optimization of integrated geological-engineering design of volume fracturing with fan-shaped well pattern |
| title_sort | optimization of integrated geological engineering design of volume fracturing with fan shaped well pattern |
| topic | shale oil fan-shaped well pattern horizontal well geological model hydraulic fracturing productivity evaluation |
| url | http://www.sciencedirect.com/science/article/pii/S1876380423604422 |
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