Evolution of Friction and Permeability in a Propped Fracture under Shear
We explore the evolution of friction and permeability of a propped fracture under shear. We examine the effects of normal stress, proppant thickness, proppant size, and fracture wall texture on the frictional and transport response of proppant packs confined between planar fracture surfaces. The pro...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2017/2063747 |
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| author | Fengshou Zhang Yi Fang Derek Elsworth Chaoyi Wang Xiaofeng Yang |
| author_facet | Fengshou Zhang Yi Fang Derek Elsworth Chaoyi Wang Xiaofeng Yang |
| author_sort | Fengshou Zhang |
| collection | DOAJ |
| description | We explore the evolution of friction and permeability of a propped fracture under shear. We examine the effects of normal stress, proppant thickness, proppant size, and fracture wall texture on the frictional and transport response of proppant packs confined between planar fracture surfaces. The proppant-absent and proppant-filled fractures show different frictional strength. For fractures with proppants, the frictional response is mainly controlled by the normal stress and proppant thickness. The depth of shearing-concurrent striations on fracture surfaces suggests that the magnitude of proppant embedment is controlled by the applied normal stress. Under high normal stress, the reduced friction implies that shear slip is more likely to occur on propped fractures in deeper reservoirs. The increase in the number of proppant layers, from monolayer to triple layers, significantly increases the friction of the propped fracture due to the interlocking of the particles and jamming. Permeability of the propped fracture is mainly controlled by the magnitude of the normal stress, the proppant thickness, and the proppant grain size. Permeability of the propped fracture decreases during shearing due to proppant particle crushing and related clogging. Proppants are prone to crushing if the shear loading evolves concurrently with the normal loading. |
| format | Article |
| id | doaj-art-807cea823bc14630bbf5ac1c80825f0f |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-807cea823bc14630bbf5ac1c80825f0f2025-02-03T05:57:43ZengWileyGeofluids1468-81151468-81232017-01-01201710.1155/2017/20637472063747Evolution of Friction and Permeability in a Propped Fracture under ShearFengshou Zhang0Yi Fang1Derek Elsworth2Chaoyi Wang3Xiaofeng Yang4Key Laboratory of Geotechnical & Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, ChinaDepartment of Energy and Mineral Engineering, EMS Energy Institute and G3 Center, The Pennsylvania State University, University Park, PA 16802, USADepartment of Energy and Mineral Engineering, EMS Energy Institute and G3 Center, The Pennsylvania State University, University Park, PA 16802, USADepartment of Energy and Mineral Engineering, EMS Energy Institute and G3 Center, The Pennsylvania State University, University Park, PA 16802, USASchool of Mechanics and Civil Engineering, China University of Mining and Technology (Beijing), Beijing 10083, ChinaWe explore the evolution of friction and permeability of a propped fracture under shear. We examine the effects of normal stress, proppant thickness, proppant size, and fracture wall texture on the frictional and transport response of proppant packs confined between planar fracture surfaces. The proppant-absent and proppant-filled fractures show different frictional strength. For fractures with proppants, the frictional response is mainly controlled by the normal stress and proppant thickness. The depth of shearing-concurrent striations on fracture surfaces suggests that the magnitude of proppant embedment is controlled by the applied normal stress. Under high normal stress, the reduced friction implies that shear slip is more likely to occur on propped fractures in deeper reservoirs. The increase in the number of proppant layers, from monolayer to triple layers, significantly increases the friction of the propped fracture due to the interlocking of the particles and jamming. Permeability of the propped fracture is mainly controlled by the magnitude of the normal stress, the proppant thickness, and the proppant grain size. Permeability of the propped fracture decreases during shearing due to proppant particle crushing and related clogging. Proppants are prone to crushing if the shear loading evolves concurrently with the normal loading.http://dx.doi.org/10.1155/2017/2063747 |
| spellingShingle | Fengshou Zhang Yi Fang Derek Elsworth Chaoyi Wang Xiaofeng Yang Evolution of Friction and Permeability in a Propped Fracture under Shear Geofluids |
| title | Evolution of Friction and Permeability in a Propped Fracture under Shear |
| title_full | Evolution of Friction and Permeability in a Propped Fracture under Shear |
| title_fullStr | Evolution of Friction and Permeability in a Propped Fracture under Shear |
| title_full_unstemmed | Evolution of Friction and Permeability in a Propped Fracture under Shear |
| title_short | Evolution of Friction and Permeability in a Propped Fracture under Shear |
| title_sort | evolution of friction and permeability in a propped fracture under shear |
| url | http://dx.doi.org/10.1155/2017/2063747 |
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