Results 1 to 10 of about 12,080 (261)

Prediction of Drill Bit Breakage Using an Infrared Sensor [PDF]

Sensors, 2021
In this paper, a novel drill bit breakage prediction method featuring a low-cost commercial infrared sensor to monitor drill bit corner wear is proposed.
Min-Jae Jeong, Sang-Woo Lee, Woong-Ki Jang, Hyung-Jin Kim, Young-Ho Seo, Byeong-Hee Kim   +5 more
doaj   +2 more sources

Similarity evaluation of stratum anti-drilling ability and a new method of drill bit selection

Petroleum Exploration and Development, 2021
Considering the stratum anti-drilling ability, drill bit working conditions, drill bit application effect and drill bit economic benefits, the similarity of stratum anti-drilling ability was evaluated by grey relational analysis theory to screen out ...
Zhaokai Hou
exaly   +3 more sources

Influence of Heavy Weight Drill Pipe Material and Drill Bit Manufacturing Errors on Stress State of Steel Blades

Energies, 2021
Drilling volumes should be increased in order to increase hydrocarbon production, but this is impossible without the usage of high-quality drilling tools made of modern structural materials.
Oleg Bazaluk, Liubomyr Ropyak, Vasyl Lozynskyi   +2 more
exaly   +3 more sources

Does the bone drill bit remain sharp after a collision with the intramedullary pin? a study on isolated canine tibias [PDF]

BMC Veterinary Research
Background Blunting of the tip, as well as smoothing and abrasion of the cutting edges, are natural signs of wear observed under magnification after repeated use of bone drill bits.
Piotr Trębacz, Michał Czopowicz, Magdalena Antonowicz-Hüpsch, Karolina Wilk, Anna Barteczko, Mateusz Pawlik, Agata Piątek, Aleksandra Kurkowska   +7 more
doaj   +2 more sources

Study on the Structure and Tribological Behavior of Zn - Ni Coating by Pack - Cementation [PDF]

Cailiao Baohu, 2021
In order to improve the friction and wear properties of 45 steel’s surface surface, a Zn - Ni coating was prepared on 45 steel’s surface by pack - cementation method.
ZHANG Jin, LIN Yuan - hua, GUO Meng - xin, XIANG - Huan, RAN Xue - lin, HUANG Min
doaj   +1 more source

Experimental and Numerical Study on Air Flow Behavior for a Novel Retractable Reverse Circulation Drill Bit of Casing-while-Drilling (CwD)

Geofluids, 2021
A reverse circulation Down-The-Hole (DTH) hammer drill bit in Casing-while-Drilling (CwD) processes is designed and applied to drilling under complicated formation.
Bo Qi, Pinlu Cao, He Yang, Wenbo He, Mengke Wang, Baoyi Chen, Kun Bo, Zhichuan Zheng   +7 more
doaj   +1 more source

One-Dimensional Convolutional Neural Network for Drill Bit Failure Detection in Rotary Percussion Drilling

Mining, 2021
Drill bit failure is a prominent concern in the drilling process of any mine, as it can lead to increased mining costs. Over the years, the detection of drill bit failure has been based on the operator’s skills and experience, which are subjective and ...
Lesego Senjoba, Jo Sasaki, Yoshino Kosugi, Hisatoshi Toriya, Masaya Hisada, Youhei Kawamura   +5 more
doaj   +1 more source

Analysis of Materials and Modern Technologies for PDC Drill Bit Manufacturing

Успехи физики металлов, 2020
The article presents a review of polycrystalline diamond composite (PDC) drill bit manufacturing technologies and used metals in order to provide surface quality and accuracy as well as to attract a wider range of scientists to find new technologies and ...
L. Ya. Ropyak, T. O. Pryhorovska, K. H. Levchuk
doaj   +1 more source

Orthogonal experimental research on the structural parameters of a novel drill bit used for ice core drilling with air reverse circulation

Journal of Glaciology, 2019
A new type of ice core drill bit, designed with a vane swirler, was developed for ice core drilling with air reverse circulation. An orthogonal experimental design method was employed to investigate the effects of the swirler structure parameters on the ...
Pinlu Cao, Qi Zhao, Zhuo Chen, Hongyu Cao, Baoyi Chen   +4 more
doaj   +1 more source

Experiment on the influence of downhole drill string absorption & hydraulic supercharging device on bottom hole WOB fluctuation

Energy Reports, 2023
Large amplitude and high frequency WOB (weight on bit) fluctuation will lead to problems such as low rock breaking efficiency, short service life and slow drilling speed. This problem is particularly prominent in hard and difficult to drill formation and
Liu Yongwang, Zhang Hongning, Niu Yixiang, Lin Guojun, Liu Wentao, Li Yiwu   +5 more
doaj   +1 more source