IMECH-IR  > 非线性力学国家重点实验室
Modeling of Fracture Width and Conductivity in Channel Fracturing With Nonlinear Proppant-Pillar Deformation
Zhu HY; Zhao YP(赵亚溥); Feng YC; Wang HW; Zhang LY; McLennan JD
Corresponding AuthorZhu, Haiyan()
Source PublicationSPE JOURNAL
2019-06-01
Volume24Issue:3Pages:1288-1308
ISSN1086-055X
AbstractChannel fracturing acknowledges that there will be local concentrations of proppant that generate high-conductivity channel networks within a hydraulic fracture. These concentrations of proppant form pillars that maintain aperture. The mechanical properties of these proppant pillars and the reservoir rock are important factors affecting conductivity. In this paper, the nonlinear stress/strain relationship of proppant pillars is first determined using experimental results. A predictive model for fracture width and conductivity is developed when unpropped, highly conductive channels are generated during the stimulation. This model considers the combined effects of pillar and fracture-surface deformation, as well as proppant embedment. The influence of the geomechanical parameters related to the formation and the operational parameters of the stimulation are analyzed using the proposed model. The results of this work indicate the following: 1. Proppant pillars clearly exhibit compaction in response to applied closure stress, and the resulting axial and radial deformation should not be ignored in the prediction of fracture conductivity. 2. There is an optimal ratio (approximately 0.6 to 0.7) of pillar diameter to pillar distance that results in a maximum hydraulic conductivity regardless of pillar diameter. 3. The critical ratio of rock modulus to closure stress currently used in the industry to evaluate the applicability of a channel-fracturing technique is quite conservative. 4. The operational parameters of fracturing jobs should also be considered in the evaluation.
Indexed BySCI
Language英语
WOS IDWOS:000471258300023
WOS KeywordHYDRAULIC FRACTURES ; MECHANICAL STABILITY ; EMBEDMENT ; SIMULATION ; STRESS
WOS Research AreaEngineering
WOS SubjectEngineering, Petroleum
Funding ProjectNational Natural Science Foundation of China[51604232] ; National Natural Science Foundation of China[51874253] ; National Natural Science Foundation of China[11872363] ; National Natural Science Foundation of China[51861145314] ; China Postdoctoral Science Foundation[2017M610117] ; China Postdoctoral Science Foundation[2018T110142] ; Search Foundation of Sichuan Province[2018FZ0069] ; Chinese Academy of Sciences (CAS) through the CAS Interdisciplinary Innovation Team Project ; CAS Key Research Program of Frontier Sciences[QYZDJ-SSW449JSC019] ; CAS Strategic Priority Research Program[XDB22040401]
Funding OrganizationNational Natural Science Foundation of China ; China Postdoctoral Science Foundation ; Search Foundation of Sichuan Province ; Chinese Academy of Sciences (CAS) through the CAS Interdisciplinary Innovation Team Project ; CAS Key Research Program of Frontier Sciences ; CAS Strategic Priority Research Program
Classification一类
Ranking2
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/79383
Collection非线性力学国家重点实验室
Recommended Citation
GB/T 7714
Zhu HY,Zhao YP,Feng YC,et al. Modeling of Fracture Width and Conductivity in Channel Fracturing With Nonlinear Proppant-Pillar Deformation[J]. SPE JOURNAL,2019,24(3):1288-1308.
APA Zhu HY,赵亚溥,Feng YC,Wang HW,Zhang LY,&McLennan JD.(2019).Modeling of Fracture Width and Conductivity in Channel Fracturing With Nonlinear Proppant-Pillar Deformation.SPE JOURNAL,24(3),1288-1308.
MLA Zhu HY,et al."Modeling of Fracture Width and Conductivity in Channel Fracturing With Nonlinear Proppant-Pillar Deformation".SPE JOURNAL 24.3(2019):1288-1308.
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