Study on influence of bedding on hydraulic fracture propagation morphologies in Jurassic reservoirs
The Jurassic formations of the Ordos Basin, with burial depths ranging from 300 to 2,200 m, exhibit numerous horizontal bedding planes within the reservoirs, leading to complex variations in fracture morphology and propagation direction during hydraulic fracturing. Laboratory Brazilian splitting tes...
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Editorial Department of Petroleum Reservoir Evaluation and Development
2024-12-01
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| Series: | Youqicang pingjia yu kaifa |
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| Online Access: | https://red.magtech.org.cn/fileup/2095-1426/PDF/1733807748071-2002901709.pdf |
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| author | YUAN Lina, WANG Guangtao, WANG Chengwang, HOU Rui, SUN Feng |
| author_facet | YUAN Lina, WANG Guangtao, WANG Chengwang, HOU Rui, SUN Feng |
| author_sort | YUAN Lina, WANG Guangtao, WANG Chengwang, HOU Rui, SUN Feng |
| collection | DOAJ |
| description | The Jurassic formations of the Ordos Basin, with burial depths ranging from 300 to 2,200 m, exhibit numerous horizontal bedding planes within the reservoirs, leading to complex variations in fracture morphology and propagation direction during hydraulic fracturing. Laboratory Brazilian splitting tests were conducted to evaluate the tensile strength of core samples from Jurassic formations, considering the impact of bedding. The tensile strength differences between specimens perpendicular to and parallel to bedding planes were compared. Based on the experimental data, a three-dimensional finite element model using the cohesive element method was developed to characterize hydraulic fracturing in multilayered Jurassic reservoirs, focusing on the effects of bedding strength and in-situ stress differences on fracture morphology and propagation paths. The results indicated that bedding strength and stress differences were the primary factors influencing fracture deflection. High bedding strength and large stress differences reduced the restraining effect of bedding on fractures, enhancing their vertical penetration across layers. Conversely, low bedding strength and small stress differences led to the opening of bedding planes, causing fractures to deviate and propagate along bedding surfaces. These findings provide guidance for optimizing hydraulic fracturing operations in Jurassic reservoirs. |
| format | Article |
| id | doaj-art-6bf3b497b75e40099b35303f065e1ff4 |
| institution | OA Journals |
| issn | 2095-1426 |
| language | zho |
| publishDate | 2024-12-01 |
| publisher | Editorial Department of Petroleum Reservoir Evaluation and Development |
| record_format | Article |
| series | Youqicang pingjia yu kaifa |
| spelling | doaj-art-6bf3b497b75e40099b35303f065e1ff42025-08-20T02:03:05ZzhoEditorial Department of Petroleum Reservoir Evaluation and DevelopmentYouqicang pingjia yu kaifa2095-14262024-12-0114690891710.13809/j.cnki.cn32-1825/te.2024.06.012Study on influence of bedding on hydraulic fracture propagation morphologies in Jurassic reservoirsYUAN Lina, WANG Guangtao, WANG Chengwang, HOU Rui, SUN Feng01. College of Pipeline and Civil Engineering, China University of Petroleum（East China）, Qingdao, Shandong 266580, China;2. Research Institute of Oil and Gas Technology, Changqing Oilfield, Xi'an, Shaanxi 710021, China;3. Natural Gas Evaluation Project Department, Changqing Oilfield, Qingyang, Gansu 745000, ChinaThe Jurassic formations of the Ordos Basin, with burial depths ranging from 300 to 2,200 m, exhibit numerous horizontal bedding planes within the reservoirs, leading to complex variations in fracture morphology and propagation direction during hydraulic fracturing. Laboratory Brazilian splitting tests were conducted to evaluate the tensile strength of core samples from Jurassic formations, considering the impact of bedding. The tensile strength differences between specimens perpendicular to and parallel to bedding planes were compared. Based on the experimental data, a three-dimensional finite element model using the cohesive element method was developed to characterize hydraulic fracturing in multilayered Jurassic reservoirs, focusing on the effects of bedding strength and in-situ stress differences on fracture morphology and propagation paths. The results indicated that bedding strength and stress differences were the primary factors influencing fracture deflection. High bedding strength and large stress differences reduced the restraining effect of bedding on fractures, enhancing their vertical penetration across layers. Conversely, low bedding strength and small stress differences led to the opening of bedding planes, causing fractures to deviate and propagate along bedding surfaces. These findings provide guidance for optimizing hydraulic fracturing operations in Jurassic reservoirs.https://red.magtech.org.cn/fileup/2095-1426/PDF/1733807748071-2002901709.pdf|jurassic reservoirs|bedding structure|hydraulic fracturing|fracture morphology|finite element simulation |
| spellingShingle | YUAN Lina, WANG Guangtao, WANG Chengwang, HOU Rui, SUN Feng Study on influence of bedding on hydraulic fracture propagation morphologies in Jurassic reservoirs Youqicang pingjia yu kaifa |jurassic reservoirs|bedding structure|hydraulic fracturing|fracture morphology|finite element simulation |
| title | Study on influence of bedding on hydraulic fracture propagation morphologies in Jurassic reservoirs |
| title_full | Study on influence of bedding on hydraulic fracture propagation morphologies in Jurassic reservoirs |
| title_fullStr | Study on influence of bedding on hydraulic fracture propagation morphologies in Jurassic reservoirs |
| title_full_unstemmed | Study on influence of bedding on hydraulic fracture propagation morphologies in Jurassic reservoirs |
| title_short | Study on influence of bedding on hydraulic fracture propagation morphologies in Jurassic reservoirs |
| title_sort | study on influence of bedding on hydraulic fracture propagation morphologies in jurassic reservoirs |
| topic | |jurassic reservoirs|bedding structure|hydraulic fracturing|fracture morphology|finite element simulation |
| url | https://red.magtech.org.cn/fileup/2095-1426/PDF/1733807748071-2002901709.pdf |
| work_keys_str_mv | AT yuanlinawangguangtaowangchengwanghouruisunfeng studyoninfluenceofbeddingonhydraulicfracturepropagationmorphologiesinjurassicreservoirs |