Results 181 to 190 of about 142,974 (226)

Research on rock-breaking mechanism of cross-cutting PDC bit

Journal of Petroleum Science and Engineering, 2018
Abstract Cross-cutting PDC (Polycrystalline Diamond Compact) bit is an efficient drilling technology that increases the rock-breaking efficiency and prolongs the service life of the bit through forming mesh-like pattern in the bottom-hole. This paper studies the rock-breaking mechanism of the cross-cutting PDC bit with the combination of both ...
Yingxin Yang, Chunliang Zhang, Min Lin, Lian Chen   +3 more
openaire   +1 more source

Working mechanism and rock-breaking characteristics of coring drill bit

Journal of Petroleum Science and Engineering, 2018
Abstract For improving the rate of penetration of the complex well structure and performance of the coring drill bit, this paper is to investigate a new type of coring drill bit that generates small-diameter core samples during the drilling process.
Jialin Tian, Jurui Li, Wenming Cheng, Zhi Zhu, Lin Yang, Yi Yang, Tangjia Zhang   +6 more
openaire   +1 more source

Mechanism and effect of jet parameters on particle waterjet rock breaking

Powder Technology, 2017
Abstract The particle (spherical steel particles) waterjet is a new type of waterjet that can effectively break rocks and other materials. In this study, the simulation combined with the experimental procedure was conducted for optimization of the jet parameters (such as velocity, water pressure, dwell time, concentration, diameter, and standoff ...
Jian Zhao, Guicai Zhang, Yiji Xu, Ruihe Wang, Weidong Zhou, Liexiang Han, Yi Zhou   +6 more
openaire   +1 more source

Improved Calculation Model of Mechanical Specific Energy Based on Single-Cutter Rock-Breaking Mechanism

SPE Journal
Summary As oil and gas exploration progresses to ultradeep and 10 000-m depths, insufficient energy supply during rock breaking by downhole polycrystalline diamond compact (PDC) bits presents a critical challenge. Quantifying the energy consumed in PDC cutter/rock interactions is therefore essential for enhancing bit efficiency and ...
Jiusen Wei, Guangqing Zhang, Wei Liu, Deli Gao   +3 more
openaire   +1 more source

Experimental study on the rock-breaking mechanism of disc-like hybrid bit

Journal of Petroleum Science and Engineering, 2018
Abstract In order to solve the problems of low rate of penetration (ROP) and short service life of the bit drilling in hard formation, and further improve the performance of conventional hybrid bit, a hybrid bit, disc-like hybrid bit (DLHB) is put forward. The hybrid bit has the advantages of conventional Polycrystalline Diamond Compact (PDC) bit and
Shiwei Niu, Hualin Zheng, Yingxin Yang, Lian Chen   +3 more
openaire   +1 more source

Rock-Breaking Mechanism and Parameter Optimization of Ridged Pdc Cutters

SSRN Electronic Journal, 2022
Zhijie Chen, Yang Li, Qi Peng, Weiqiang Xu, Shiwei Niu, Haitao Ren, Yingxin Yang   +6 more
openaire   +1 more source

Study on Rock-Breaking Mechanism of Highly Plastic Formations

2022
Fangyuan Shao, Wei Liu, Deli Gao
openaire   +1 more source

Analysis of rock-breaking mechanisms of high-voltage pulsed electric electrode bits

Physica Scripta
Abstract High-voltage pulsed electric rock-breaking technology is an innovative, green, and efficient method with substantial potential in the field of rock fragmentation. The efficiency of this technology is primarily determined by the design of the electrode bit.
Xiaohua Zhu, Siqi Liu, Weiji Liu, Xin Zhou, Youjian Zhang, Ming Liu   +5 more
openaire   +1 more source

Mechanism of extraction chamber immediate roof rock breaking in blasting

2022
V.N. Shashkin, T.M. Ermekov, M.G. Abuov, V.G. Yakovenko   +3 more
openaire   +1 more source

Microwave assisted mechanical rock breaking

2011
F Hassani, P Nekoovaght, P Radziszewski, K Waters   +3 more
openaire   +1 more source