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DEM-CFD Modeling of Proppant Pillar Deformation and Stability during the Fracturing Fluid Flowback
Zhu HY(朱海燕)1,2; Shen JD1; Zhang FS3,4; Huang B5; Zhang LY5; Huang W6; McLennan JD6
Source PublicationGEOFLUIDS
2018
PagesUNSP 3535817
ISSN1468-8115
Abstract

In this study, proppant pillar deformation and stability during the fracturing fluid flowback of channel fracturing was simulated with DEM-CFD- (discrete element method-computational fluid dynamics-) coupling method. Fibers were modeled by implementing the bonded particle model for contacts between particles. In the hydraulic fracture-closing period, the height of the proppant pillar decreases gradually and the diameter increases as the closing stress increases. In the fracturing fluid flowback period, proppant particles could be driven away from the pillar by the fluid flow and cause the instability of the proppant pillar. The proppant flowback could occur easily with large proppant pillar height or a large fluid pressure gradient. Both the pillar height and the pillar diameter to spacing ratio are key parameters for the design of channel fracturing. Increasing the fiber-bonding strength could enhance the stability of the proppant pillar.

DOI10.1155/2018/3535817
Indexed BySCI
Language英语
WOS IDWOS:000441525200001
WOS KeywordHydraulic Fractures ; Conductivity ; Simulation
WOS Research AreaGeochemistry & Geophysics ; Geology
WOS SubjectGeochemistry & Geophysics ; Geology
Funding OrganizationNational Natural Science Foundation of China(51604232 ; China Postdoctoral Science Foundation(2017M610117 ; 41772286) ; 2018T110142)
Classification二类
Ranking1
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/77646
Collection非线性力学国家重点实验室
Corresponding AuthorZhang FS
Affiliation1.Southwest Petr Univ, State Key Lab Oil & Gas Reservoir Geol & Exploita, Chengdu 610500, Sichuan, Peoples R China
2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China
3.Tongji Univ, Dept Geotech Engn, Shanghai 200092, Peoples R China
4.Minist Educ, Key Lab Geotech & Underground Engn, Shanghai 200092, Peoples R China
5.SINOPEC Shengli Oilfield Co, Manage Ctr Oil & Gas Explorat, Dongying 257000, Shandong, Peoples R China
6.Univ Utah, Energy Geosci Inst, Salt Lake City, UT 84108 USA
Recommended Citation
GB/T 7714
Zhu HY,Shen JD,Zhang FS,et al. DEM-CFD Modeling of Proppant Pillar Deformation and Stability during the Fracturing Fluid Flowback[J]. GEOFLUIDS,2018:UNSP 3535817.
APA Zhu HY.,Shen JD.,Zhang FS.,Huang B.,Zhang LY.,...&McLennan JD.(2018).DEM-CFD Modeling of Proppant Pillar Deformation and Stability during the Fracturing Fluid Flowback.GEOFLUIDS,UNSP 3535817.
MLA Zhu HY,et al."DEM-CFD Modeling of Proppant Pillar Deformation and Stability during the Fracturing Fluid Flowback".GEOFLUIDS (2018):UNSP 3535817.
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