Zobrazeno 1 - 4
of 4
pro vyhledávání: '"Qingliang Qi"'
Publikováno v:
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Vol 9, Iss 1, Pp 1-16 (2023)
Abstract In order to solve the problems of low ROP and short service life of the bit drilling in deep and hard formation, a new technology of hobbing-cone hybrid PDC bit which has combined the advantages of conventional PDC bit and the hobbing-cone i
Externí odkaz:
https://doaj.org/article/d8e30a43b34140d7b88d97bbbd2c18a2
Publikováno v:
Advances in Mechanical Engineering, Vol 14 (2022)
Aiming at improving the ROP of PDC bits in hard-to-drill formation, a new hybrid PDC bit with vertical-wheel is proposed in this paper, furtherly, the kinematic characteristics of the vertical-wheel are researched. Firstly, the coordinate system of t
Externí odkaz:
https://doaj.org/article/a35edaa8c4464e8b8af9554d3517a5c3
Publikováno v:
Processes
Volume 11
Issue 2
Pages: 464
Volume 11
Issue 2
Pages: 464
In the oil and gas drilling industry, cemented carbide teeth are one of the most widely used rock-breaking elements. In order to reveal the rock damage mechanism of tooth indentation, a series of tooth indentation experiments were conducted in this s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0cc36616edf8e1aecf22414c4316d31d
Publikováno v:
Materials, Vol 13, Iss 10, p 2416 (2020)
In this paper, the effect of repair welding heat input on microstructure, residual stresses, and stress corrosion cracking (SCC) sensitivity were investigated by simulation and experiment. The results show that heat input influences the microstructur
Externí odkaz:
https://doaj.org/article/bf69a30e4b3542289a75841c244b69d8