Complex fracture shapes in hydraulic fracturing with orientated perforations
Based on rock mechanical tests and practical data interpretation, a three-dimensional finite element model is established to study factors influencing fracture shape in orientated hydraulic fracturing. The stress interference around neighboring perforations causes fracture initiation, and the main f...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2009-02-01
|
| Series: | Petroleum Exploration and Development |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1876380409601130 |
| _version_ | 1818665018655244288 |
|---|---|
| author | Zhang Guangqing Chen Mian |
| author_facet | Zhang Guangqing Chen Mian |
| author_sort | Zhang Guangqing |
| collection | DOAJ |
| description | Based on rock mechanical tests and practical data interpretation, a three-dimensional finite element model is established to study factors influencing fracture shape in orientated hydraulic fracturing. The stress interference around neighboring perforations causes fracture initiation, and the main factors influencing fracture shapes are horizontal principal stress difference, and the angle between the perforation orientation and the maximum horizontal stress. The computations also reveal that hydraulic fractures will not always initiate along perforation orientation and usually the initial hydraulic fracture is in a zigzag shape. When the horizontal stress difference and the perforation angle are great, dual fractures will happen along perforation and the maximum stress directions. So, improving the accuracy of stress measurement and orientated perforation can avoid the generation of complex-shape hydraulic fractures. Key words: orientated perforation, hydraulic fracturing, fracture shape, dual fractures, finite element model |
| first_indexed | 2024-12-17T05:41:58Z |
| format | Article |
| id | doaj.art-a2f3343ba0fb46ac90e1532474b27dbe |
| institution | Directory Open Access Journal |
| issn | 1876-3804 |
| language | English |
| last_indexed | 2024-12-17T05:41:58Z |
| publishDate | 2009-02-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Petroleum Exploration and Development |
| spelling | doaj.art-a2f3343ba0fb46ac90e1532474b27dbe2022-12-21T22:01:25ZengKeAi Communications Co., Ltd.Petroleum Exploration and Development1876-38042009-02-01361103107Complex fracture shapes in hydraulic fracturing with orientated perforationsZhang Guangqing0Chen Mian1College of Petroleum Engineering, China University of Petroleum, Beijing 102249, China; Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, China University of Petroleum, Beijing 102249, China; Corresponding authorCollege of Petroleum Engineering, China University of Petroleum, Beijing 102249, ChinaBased on rock mechanical tests and practical data interpretation, a three-dimensional finite element model is established to study factors influencing fracture shape in orientated hydraulic fracturing. The stress interference around neighboring perforations causes fracture initiation, and the main factors influencing fracture shapes are horizontal principal stress difference, and the angle between the perforation orientation and the maximum horizontal stress. The computations also reveal that hydraulic fractures will not always initiate along perforation orientation and usually the initial hydraulic fracture is in a zigzag shape. When the horizontal stress difference and the perforation angle are great, dual fractures will happen along perforation and the maximum stress directions. So, improving the accuracy of stress measurement and orientated perforation can avoid the generation of complex-shape hydraulic fractures. Key words: orientated perforation, hydraulic fracturing, fracture shape, dual fractures, finite element modelhttp://www.sciencedirect.com/science/article/pii/S1876380409601130 |
| spellingShingle | Zhang Guangqing Chen Mian Complex fracture shapes in hydraulic fracturing with orientated perforations Petroleum Exploration and Development |
| title | Complex fracture shapes in hydraulic fracturing with orientated perforations |
| title_full | Complex fracture shapes in hydraulic fracturing with orientated perforations |
| title_fullStr | Complex fracture shapes in hydraulic fracturing with orientated perforations |
| title_full_unstemmed | Complex fracture shapes in hydraulic fracturing with orientated perforations |
| title_short | Complex fracture shapes in hydraulic fracturing with orientated perforations |
| title_sort | complex fracture shapes in hydraulic fracturing with orientated perforations |
| url | http://www.sciencedirect.com/science/article/pii/S1876380409601130 |
| work_keys_str_mv | AT zhangguangqing complexfractureshapesinhydraulicfracturingwithorientatedperforations AT chenmian complexfractureshapesinhydraulicfracturingwithorientatedperforations |