Results 181 to 190 of about 197,455 (212)
A Comparative In Vitro Study on Heat Generation with Static Guided and Conventional Implant Bed Preparation Using Stainless Steel Twist Drills and a Standardized Bovine Model. [PDF]
Materials (Basel)Tur D +6 more
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Experimental study on drilling efficiency with compound axial and torsional impact load
Journal of Petroleum Science and Engineering, 2022Shubin Liu +6 more
exaly +4 more sources
International Journal of Hydrogen Energy, 2018
The transient dynamics of a drill string and the dynamic characteristics of bit control force during compound drilling have not been elucidated yet.
Ping Chen, Guangjian Dong
exaly +2 more sources
The transient dynamics of a drill string and the dynamic characteristics of bit control force during compound drilling have not been elucidated yet.
Ping Chen, Guangjian Dong
exaly +2 more sources
New Compound Drill Bit for Damage Reduction in Drilling CFRP
International Journal of Precision Engineering and Manufacturing - Green Technology, 2019Tae Jo Ko, Changping Li, Puren Ouyang
exaly +3 more sources
Asphaltite Uintaite: Approved for Sensitive Marine Environments for Drilling Operations
Day 4 Thu, November 03, 2022, 2022Over the last thirty years the oil and gas industry has implemented high environmental standards to reduce its impact on the environment. Notably, the North Sea and Gulf of Mexico areas have put more stringent regulations in place to protect marine ...
Katiuska Aguilar +3 more
semanticscholar +1 more source
2023 5th International Conference on Intelligent Control, Measurement and Signal Processing (ICMSP), 2023
During the service process, the threads are subjected to various compound alternating stresses and long-term chemical corrosion environment, resulting in cracking defects such as fatigue and stress corrosion, which eventually lead to fracture failure of ...
Xinpeng Zhang, Bingnan Yan, Xiang Wan
semanticscholar +1 more source
During the service process, the threads are subjected to various compound alternating stresses and long-term chemical corrosion environment, resulting in cracking defects such as fatigue and stress corrosion, which eventually lead to fracture failure of ...
Xinpeng Zhang, Bingnan Yan, Xiang Wan
semanticscholar +1 more source
2009
Pore waters from the Chesapeake Bay impact structure cores recovered at Eyreville Farm, Northampton County, Virginia, were analyzed to characterize the dissolved organic carbon. After squeezing or centrifuging, a small volume of pore water, 100 µL, was taken for analysis by electrospray ionization–mass spectrometry.
Colleen E. Rostad, Ward E. Sanford
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Pore waters from the Chesapeake Bay impact structure cores recovered at Eyreville Farm, Northampton County, Virginia, were analyzed to characterize the dissolved organic carbon. After squeezing or centrifuging, a small volume of pore water, 100 µL, was taken for analysis by electrospray ionization–mass spectrometry.
Colleen E. Rostad, Ward E. Sanford
openaire +1 more source
Investigation of minimum quantity lubrication effects in drilling CFRP/Ti6Al4V stacks
Materials and Manufacturing Processes, 2019Minimum quantity lubrication (MQL) has been extensively applied to the machining processes of various metallic materials; however, its impact on the drilling characteristics of metallic-composite stacks has not been thoroughly investigated.
Jinyang Xu, Min Ji, Ming Chen, F. Ren
semanticscholar +1 more source
ISA transactions
Coal seam variations in coal mine drilling can cause fluctuations in feed speed and rotational speed of the rotary head (ROR), reducing the performance of compound directional drilling control systems. This paper addresses these issues by considering the
Wangnian Li +9 more
semanticscholar +1 more source
Coal seam variations in coal mine drilling can cause fluctuations in feed speed and rotational speed of the rotary head (ROR), reducing the performance of compound directional drilling control systems. This paper addresses these issues by considering the
Wangnian Li +9 more
semanticscholar +1 more source
Rock-Breaking Mechanism Study of Axial and Torsional Impact Hammer and its Application in Deep Wells
Day 1 Mon, August 27, 2018, 2018A brand new impact hammer–Axial & Torsional impact hammer (producing high-frequency axial and torsional impact forces simultaneously)–has been developed to improve the penetration rates and eliminate stick-slip vibrations in deep and ultra-deep wells ...
Shubin Liu +4 more
semanticscholar +1 more source