Results 211 to 220 of about 66,927 (247)
Some of the next articles are maybe not open access.
Journal of Neurosurgery, 1980
✓ An inexpensive, readily available drill stop is described that can be applied to the twist drill bit to reduce the risk of “plunge.”
M L, Grode, C A, Carton
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✓ An inexpensive, readily available drill stop is described that can be applied to the twist drill bit to reduce the risk of “plunge.”
M L, Grode, C A, Carton
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IEEE Conference Record - Abstracts. 2002 IEEE International Conference on Plasma Science (Cat. No.02CH37340), 2002
We present a drilling method that is based on the phenomenon of local hot spot generation by near-field microwave radiation. The microwave drill is implemented by a coaxial near-field radiator fed by a conventional microwave source. The near-field radiator induces the microwave energy into a small volume in the drilled material under its surface, and a
E, Jerby +3 more
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We present a drilling method that is based on the phenomenon of local hot spot generation by near-field microwave radiation. The microwave drill is implemented by a coaxial near-field radiator fed by a conventional microwave source. The near-field radiator induces the microwave energy into a small volume in the drilled material under its surface, and a
E, Jerby +3 more
openaire +2 more sources
Measurements Of Drilling Hazards Before Drilling Measurement Of Drilling Hazards Before Drilling
Offshore Technology Conference, 1979ABSTRACT Most instrumentation presently used to define shallow drilling hazards has been unable, for numerous reasons, to provide the driller with much needed quantitative engineering measurements. In response to this obvious need, state-of-the-art hardware, digital data processing and geophysical interpretative ...
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1994
The production of a hole in a mechanical component is usually done by using a drill. Although drilling a hole appears to be a simple operation, the accurate drilling of a hole of the right size at the right location, can be difficult. A large number of tools and machines have been designed for the drilling of holes economically, accurately, and quickly,
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The production of a hole in a mechanical component is usually done by using a drill. Although drilling a hole appears to be a simple operation, the accurate drilling of a hole of the right size at the right location, can be difficult. A large number of tools and machines have been designed for the drilling of holes economically, accurately, and quickly,
openaire +1 more source
Drill bit seismic: A drilling optimization tool
Computer Standards & Interfaces, 1998Abstract In recent years a new drilling optimization technique has emerged. Drill bit seismic uses the acoustic energy radiated by a working drill bit to provide time-to-depth and look-ahead information while drilling. This information, available in real time at the wellsite, significantly reduces uncertainty.
R.J. Meehan +3 more
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Drill wear monitoring in cortical bone drilling
Medical Engineering & Physics, 2015Medical drills are subject to intensive wear due to mechanical factors which occur during the bone drilling process, and potential thermal and chemical factors related to the sterilisation process. Intensive wear increases friction between the drill and the surrounding bone tissue, resulting in higher drilling temperatures and cutting forces. Therefore,
Udiljak, Toma +2 more
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Exploration Drilling Campaigns - Optimized Drilling Performance using Drilling Consortium Management
SPE/IADC Drilling Conference and Exhibition, 2011Abstract Currently there are many smaller operators drilling on the Norwegian continental shelf. It is not an optimal use of resources to staff a complete drilling department in-house in all of these companies. For others, the drilling activity requires that wells are drilled in a discontinuous manner. Therefore, the drilling process can
Bjørn Thore Ribesen +4 more
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DRILL TIP AND DRILLING TOOL HAVING A DRILL TIP
2010The invention relates to a drill tip (2) comprising a base body (6) having chip flutes (22A,B) and extending in the axial direction along an axis of rotation (8) and having at least two main cutting edges (14A,B) on the front face thereof extending outward in the radial direction to a cutting corner (16A,B).
KENNAMETAL INC +2 more
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Flexible Drill-Stem Drill Rigs
2016Flexible drill-stem technology spools a flexible conduit onto a take-up reel to rapidly lower and hoist bits, motors, and other tools in and out of the borehole. Such operations proceed quickly compared to using a jointed-pipe drilling rig because the connection time is eliminated during tripping.
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Twist Drills and Drilling Processes
1976Abstract : This report brings together in one volume the vast information on drills and drilling processes published in numerous journals and technical papers. A review of more than 800 articles was conducted; the result being a collection of 271 of the most valuable articles in the field of drilling from worldwide publications dated 1896 to present. A
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