Results 221 to 230 of about 5,303 (265)

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

The Rock-Breaking Mechanism of Thermal Spalling-Assisted Rock Cutting by PDC Cutter

Rock Mechanics and Rock Engineering, 2023
Feilong Yang, Weiji Liu, Xiaohua Zhu, Chang Xiang   +3 more
openaire   +1 more source

Development of bit design for breaking rocks with different mechanical properties

Nafta-Gaz
This paper presents a description of a bit design with a combined cutter layout, aimed at increasing the efficiency of breaking rocks with different mechanical properties. The results from industrial testing of the manufactured bits are analyzed, revealing the need to improve their hydraulic flushing system.
Mykola Seniushkovych, Ivan Vytvytskyi, Oleh Martsynkiv, Volodymyr Tyrlych, Andrii Vytiaz   +4 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

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

Microwave assisted mechanical rock breaking

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

A Mechanized Method of Breaking down and Washing Foraminiferal Rock Samples

Micropaleontology, 1961
"A method and apparatus for the processing of foraminiferal samples is described and illustrated."
openaire   +1 more source

Exploiting the paddle-wheel mechanism for the design of fast ion conductors

Nature Reviews Materials, 2022
Zhizhen Zhang, Linda F Nazar
exaly  

Numerical simulation of rock-breaking mechanisms by triple-ridged PDC cutter in hard rocks

Geoenergy Science and Engineering, 2023
Wenhao He, Runqing Zhang, Li Liu, Zhenliang Chen, Huaizhong Shi, Zhongwei Huang, Chao Xiong, Xue Li, Jinming Sun, Chengtao Hu   +9 more
openaire   +1 more source

A review of cancer immunotherapy toxicity

Ca-A Cancer Journal for Clinicians, 2020
Lucy Boyce Kennedy
exaly