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Comparison of an Electrical Cranial Access Drill With Autostop Technology to a Traditional Hand Crank Cranial Access Drill. [PDF]
Neurosurg PractKilgallon JL +6 more
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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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Arthroscopy: The Journal of Arthroscopic & Related Surgery, 2002
A case of an EndoButton drill bit failure associated with anterior cruciate ligament reconstruction using semitendinosus gracilis autograft is reported. The distal 10 mm flutes of the drill bit sheared off prior to graft passage. This event was likely related to repeated use of this bit, which is intended for single use only.
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A case of an EndoButton drill bit failure associated with anterior cruciate ligament reconstruction using semitendinosus gracilis autograft is reported. The distal 10 mm flutes of the drill bit sheared off prior to graft passage. This event was likely related to repeated use of this bit, which is intended for single use only.
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Journal of Petroleum Technology, 1998
This article is a synopsis of paper SPE 39341, "An Instrumented Bit: A Necessary Step to the Intelligent BHA," by Mike Smith, SPE, Evan Lowe, SPE, and Craig Coull, Baker Oil Tools, originally presented at the 1998 IADC/SPE Drilling Conference, Dallas, 3-6 March.
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This article is a synopsis of paper SPE 39341, "An Instrumented Bit: A Necessary Step to the Intelligent BHA," by Mike Smith, SPE, Evan Lowe, SPE, and Craig Coull, Baker Oil Tools, originally presented at the 1998 IADC/SPE Drilling Conference, Dallas, 3-6 March.
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Journal of Engineering for Industry, 1973
Fundamental relationships of the parameters; penetration rate, bit weight, rotary speed, bit horsepowers, flow rate, and pressure were developed using eight full-scale, oilfield diamond drilling bits under laboratory-controlled conditions. One thousand five hundred data points, with all the parameters, were analyzed with 642 plots and 131 multiple ...
T. B. Dellinger, B. J. Livesay
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Fundamental relationships of the parameters; penetration rate, bit weight, rotary speed, bit horsepowers, flow rate, and pressure were developed using eight full-scale, oilfield diamond drilling bits under laboratory-controlled conditions. One thousand five hundred data points, with all the parameters, were analyzed with 642 plots and 131 multiple ...
T. B. Dellinger, B. J. Livesay
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54th EAEG Meeting, 1992
The seismic body wave radiation pattern of a working rock bit can be characterized by theoretical modeling and field data examples. My model of drill-bit signal generation is a pseudo-random series of bit tooth impacts that create both axial forces and tangential torques about the borehole axis.
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The seismic body wave radiation pattern of a working rock bit can be characterized by theoretical modeling and field data examples. My model of drill-bit signal generation is a pseudo-random series of bit tooth impacts that create both axial forces and tangential torques about the borehole axis.
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Advanced Materials Research, 2013
On the rotary drilling system, the technologies for fracturing and cutting hard rock are mainly mechanical rock breaking methods by use of improving bottomhole water horse power and bit energy, and the working life and rock breaking efficiency have much room for improvement.
Zong Gang Wang, Zhen Wei, Lai Ju Han
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On the rotary drilling system, the technologies for fracturing and cutting hard rock are mainly mechanical rock breaking methods by use of improving bottomhole water horse power and bit energy, and the working life and rock breaking efficiency have much room for improvement.
Zong Gang Wang, Zhen Wei, Lai Ju Han
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Low-Frequency Drill Bit Seismic While Drilling
Proceedings of Offshore Technology Conference, 2009Abstract A breakthrough has been discovered for controlling seismic sources to generate selectable low frequencies applicable to many seismic applications. All possible borehole pulsed sources, including hydraulically driven devices, explosives, and etc., by their very nature produce high frequencies.
Robert Paul Radtke +3 more
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