Study on the optimal design of volume fracturing for shale gas based on evaluating the fracturing effect—A case study on the Zhao Tong shale gas demonstration zone in Sichuan, China
Abstract Hydraulic fracturing is the key technology in the development of shale gas reservoirs, and it mainly adopts volume fracturing technology to communicate hydraulic fractures with natural fractures to increase the drainage area. In view of the difficulty in characterizing the complex fractures...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2021-03-01
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| Series: | Journal of Petroleum Exploration and Production Technology |
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| Online Access: | https://doi.org/10.1007/s13202-021-01134-0 |
| _version_ | 1797199594343366656 |
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| author | Yongxue Lin Shanyong Liu Shuyang Gao Yuan Yuan Jia Wang Siqi Xia |
| author_facet | Yongxue Lin Shanyong Liu Shuyang Gao Yuan Yuan Jia Wang Siqi Xia |
| author_sort | Yongxue Lin |
| collection | DOAJ |
| description | Abstract Hydraulic fracturing is the key technology in the development of shale gas reservoirs, and it mainly adopts volume fracturing technology to communicate hydraulic fractures with natural fractures to increase the drainage area. In view of the difficulty in characterizing the complex fractures created by multistaged fracturing in horizontal shale gas wells and the immaturity of fracturing optimization design methods, this study first evaluated the stimulation effect of fracturing technology based on treatment data and microseismic data. Then, the fracture characteristics after frac were considered, and a post-frac simulation was studied based on the discrete fracture network (DFN) model and the microseismic monitoring data as constraints. Finally, from the simulation results, an optimal design method of volume fracturing for shale gas was proposed based on the evaluation of the frac effects. The National Shale Gas Demonstration Zone in Zhaotong, Sichuan Basin was used as an example to study the optimal frac design of shale gas wells. The results show that (1) after optimizing the design, the optimal interval range is 50–70 m, the liquid volume of a single stage is 1800–2200 m3, the amount of sand is 80 m~120 t, and the slurry rate is 10–12 m3/min. (2) Two different frac design schemes were implemented in two wells on the same platform, and the production of the optimized design scheme was 14.7% greater than the original scheme. Therefore, the frac optimization design based on evaluating the fracturing effect can better guide the development of subsequent shale gas wells in this area. |
| first_indexed | 2024-04-24T07:18:14Z |
| format | Article |
| id | doaj.art-28e6581bd2a0490d8e83a6f22070a8bf |
| institution | Directory Open Access Journal |
| issn | 2190-0558 2190-0566 |
| language | English |
| last_indexed | 2024-04-24T07:18:14Z |
| publishDate | 2021-03-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of Petroleum Exploration and Production Technology |
| spelling | doaj.art-28e6581bd2a0490d8e83a6f22070a8bf2024-04-21T11:09:13ZengSpringerOpenJournal of Petroleum Exploration and Production Technology2190-05582190-05662021-03-011141705171410.1007/s13202-021-01134-0Study on the optimal design of volume fracturing for shale gas based on evaluating the fracturing effect—A case study on the Zhao Tong shale gas demonstration zone in Sichuan, ChinaYongxue Lin0Shanyong Liu1Shuyang Gao2Yuan Yuan3Jia Wang4Siqi Xia5State Key Laboratory of Shale Oil and Gas Enrichment Mechanism and Effective DevelopmentState Key Laboratory of Shale Oil and Gas Enrichment Mechanism and Effective DevelopmentState Key Laboratory of Shale Oil and Gas Enrichment Mechanism and Effective DevelopmentResearch Institute of Petroleum Exploration and Development, Petro China, Zhejiang Oilfield CompanySchool of Geoscience, Yangtze UniversitySchool of Geoscience, Yangtze UniversityAbstract Hydraulic fracturing is the key technology in the development of shale gas reservoirs, and it mainly adopts volume fracturing technology to communicate hydraulic fractures with natural fractures to increase the drainage area. In view of the difficulty in characterizing the complex fractures created by multistaged fracturing in horizontal shale gas wells and the immaturity of fracturing optimization design methods, this study first evaluated the stimulation effect of fracturing technology based on treatment data and microseismic data. Then, the fracture characteristics after frac were considered, and a post-frac simulation was studied based on the discrete fracture network (DFN) model and the microseismic monitoring data as constraints. Finally, from the simulation results, an optimal design method of volume fracturing for shale gas was proposed based on the evaluation of the frac effects. The National Shale Gas Demonstration Zone in Zhaotong, Sichuan Basin was used as an example to study the optimal frac design of shale gas wells. The results show that (1) after optimizing the design, the optimal interval range is 50–70 m, the liquid volume of a single stage is 1800–2200 m3, the amount of sand is 80 m~120 t, and the slurry rate is 10–12 m3/min. (2) Two different frac design schemes were implemented in two wells on the same platform, and the production of the optimized design scheme was 14.7% greater than the original scheme. Therefore, the frac optimization design based on evaluating the fracturing effect can better guide the development of subsequent shale gas wells in this area.https://doi.org/10.1007/s13202-021-01134-0Shale gasMicroseismic monitoringHydraulic fracturingOptimal design |
| spellingShingle | Yongxue Lin Shanyong Liu Shuyang Gao Yuan Yuan Jia Wang Siqi Xia Study on the optimal design of volume fracturing for shale gas based on evaluating the fracturing effect—A case study on the Zhao Tong shale gas demonstration zone in Sichuan, China Journal of Petroleum Exploration and Production Technology Shale gas Microseismic monitoring Hydraulic fracturing Optimal design |
| title | Study on the optimal design of volume fracturing for shale gas based on evaluating the fracturing effect—A case study on the Zhao Tong shale gas demonstration zone in Sichuan, China |
| title_full | Study on the optimal design of volume fracturing for shale gas based on evaluating the fracturing effect—A case study on the Zhao Tong shale gas demonstration zone in Sichuan, China |
| title_fullStr | Study on the optimal design of volume fracturing for shale gas based on evaluating the fracturing effect—A case study on the Zhao Tong shale gas demonstration zone in Sichuan, China |
| title_full_unstemmed | Study on the optimal design of volume fracturing for shale gas based on evaluating the fracturing effect—A case study on the Zhao Tong shale gas demonstration zone in Sichuan, China |
| title_short | Study on the optimal design of volume fracturing for shale gas based on evaluating the fracturing effect—A case study on the Zhao Tong shale gas demonstration zone in Sichuan, China |
| title_sort | study on the optimal design of volume fracturing for shale gas based on evaluating the fracturing effect a case study on the zhao tong shale gas demonstration zone in sichuan china |
| topic | Shale gas Microseismic monitoring Hydraulic fracturing Optimal design |
| url | https://doi.org/10.1007/s13202-021-01134-0 |
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