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Numerical Simulation on Shale Fragmentation by a PDC Cutter Based on the Discrete Element Method

文献类型：期刊论文

作者Zhang, Xiaohui1,2,3; Huang, Xiaolin4; Qi, Shengwen1,2,3; Zheng, Bowen1,2,3; Guo, Songfeng1,2,3; Lu, Wei1,2,3
刊名ENERGIES
出版日期2023
卷号16期号:2页码:30
关键词shale PDC cutting rock breaking discrete element method
DOI10.3390/en16020965
英文摘要During the guided drilling process as part of shale gas exploration and development, shale is damaged by a polycrystalline diamond compact (PDC) bit cutter. It is essential to carry out research on rock breaking by a PDC cutter. In this paper, we study the mechanism of shale fragmentation by a PDC cutter based on the discrete element method. Additionally, we consider the effects of bedding angle, bedding thickness, cutting depth and cutting rate on the rock-breaking efficiency of a PDC cutter. The results show the following: (1) With the increase in bedding angle, the number and area of microcracks first increase and then decrease, and the proportion of tension cracks is relatively unchanged; there is no significant change in the morphology of the failure zone, and the average particle size of the cutting fragments first decreases and then increases. (2) With the increase in the bedding thickness, microcracks continue to extend in a horizontal direction, the total number of cracks shows a fluctuated change, and the proportion of tension cracks increases. The failure zone extends in a conical shape in the horizontal direction, and the average size of the cutting fragments gradually increases. (3) With the increase in cutting depth and cutting rate, the number and area of microcracks increase, and the proportion of shear cracks increases; the area of the failure zone increases and the size of the cutting fragment decreases.
WOS关键词ROCK-BREAKING MECHANISM ; CUTTING FORCE ; MODEL ; INDENTATION ; FAILURE ; OPTIMIZATION ; EFFICIENCY ; FRICTION ; ENERGY ; TESTS
资助项目National Natural Science Foundation of China[41902289] ; National Natural Science Foundation of China[41825018] ; National Natural Science Foundation of China[42141009] ; National Natural Science Foundation of China[41888101] ; National Natural Science Foundation of China[41790442] ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP)[2019QZKK0904]
WOS研究方向Energy & Fuels
语种英语
出版者MDPI
WOS记录号WOS:000915215000001
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP)
源URL[http://ir.iggcas.ac.cn/handle/132A11/106843]  
专题地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者Huang, Xiaolin; Zheng, Bowen
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
4.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Dept Civil Engn, Xian 710049, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Xiaohui,Huang, Xiaolin,Qi, Shengwen,et al. Numerical Simulation on Shale Fragmentation by a PDC Cutter Based on the Discrete Element Method[J]. ENERGIES,2023,16(2):30.
APA Zhang, Xiaohui,Huang, Xiaolin,Qi, Shengwen,Zheng, Bowen,Guo, Songfeng,&Lu, Wei.(2023).Numerical Simulation on Shale Fragmentation by a PDC Cutter Based on the Discrete Element Method.ENERGIES,16(2),30.
MLA Zhang, Xiaohui,et al."Numerical Simulation on Shale Fragmentation by a PDC Cutter Based on the Discrete Element Method".ENERGIES 16.2(2023):30.

入库方式： OAI收割

来源：地质与地球物理研究所

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