Mechanism of Rock Breaking by Convex Non-planar PDC Cutter and Its Applications in Gravel-bearing Formation

被引：0
|
作者：
Chen L. [1 ]
Wei X. [1 ]
Cao Q. [1 ]
Zhou Y. [2 ]
Yang Y. [1 ]
Hu C. [1 ]
Zhao Z. [1 ]
Wu B. [1 ]
机构：
[1] School of Mechatronic Engineering, Southwest Petroleum University, Chengdu
[2] Drilling and Producion Technology Research Institute, China Petroleum Jidong Oilield Branch, Hebei, Tangshan
来源：
Zhongguo Jixie Gongcheng/China Mechanical Engineering | 2024年 / 35卷 / 02期
关键词：
gravel-bearing formation; impact damage; mechanism of rock breaking; non-planar polycrystalline diamond compact(PDC) gear teeth bit;
D O I：
10.3969/j.issn.1004-132X.2024.02.022
中图分类号：
学科分类号：
摘要：
A study of convex non-planar PDC cutter was conducted to improve the impact resistance of PDC bits in gravel-bearing, soft-hard interlaced, and other inhomogeneous formations. By comparing simulation and laboratory experiments, the mechanism of rock breaking between convex non-planar cutter and conventional planar cutter was investigated. Compared to planar cutter, the contact stress generated by cutting rock with convex non-planar cutter is more uniform on the cutter, the load fluctuation during the cutting processes is significantly smaller, and the cutting stability is higher. The special non-planar structure of the cutter changes the interaction mode between the cutting cutter and the rock, and is successfully applied in heterogeneous formations. © 2024 Chinese Mechanical Engineering Society. All rights reserved.
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页码：371 / 379
页数：8
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