Results 51 to 60 of about 242,341 (155)
Research on BHA Load Transfer Considering Drill String Transverse Vibration [PDF]
, 2013 With increasing difficulty of reservoir development and harsh geological conditions, higher drilling technology meets lots of challenges, especially in the large displacement wells and ultra-deep wells.
Peng, WANG, Tie, YAN, Qian, Zhang
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, 1992 This invention is comprised of a drill string enclosure which consists of six component parts, including; a top bracket, an upper acrylic cylinder, an acrylic drill casing guide, a lower acrylic cylinder, a bottom bracket, and three flexible ducts.
Wiersholm, O. +3 more
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The Use of Aluminum Drill Pipe for Damping Drill String Vibrations
, 2018 Drill string vibrations are a significant concern during drilling operations, and are a common cause of downhole tool failures and decreases in drilling efficiency.
Evgeny G. Podnos +4 more
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Report on ignitability testing of flammable gasses in a core sampling drill string [PDF]
, 1996 This document describes the results from testing performed at the Pittsburgh Research Center to determine the effects of an ignition of flammable gasses contained in a core sampling drill string.
Witwer, K. S.
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Western String Chamber Orchestra, April 9, 1997
, 2016 Recorded during a live performance at Dalton Center Recital Hall, Western Michigan University, Kalamazoo, Michigan, April 9, 1997, 8:00 p.m., the 502nd concert of the School of Music's 1996-1997 season.Western String Chamber Orchestra, Bruce J. Uchimura,
Western String Chamber Orchestra
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Western String Chamber Orchestra, November 14, 1996
, 2016 Recorded during a live performance at Dalton Center Recital Hall, Western Michigan University, Kalamazoo, Michigan, November 14, 1996, 8:00 p.m., the 137th concert of the School of Music's 1996-1997 season.Western String Chamber Orchestra, Bruce J ...
Western String Chamber Orchestra
core
An Analytical–Numerical Model for Determining “Drill String–Wellbore” Frictional Interaction Forces
EnergiesCurrently, drilling of directional oil and gas wells under complex technical-technological and mining-geological conditions requires the use of drill pipes made of various materials.
Michał Bembenek +7 more
doaj +1 more source
Proportional-Derivative Control of Stick-Slip Oscillations in Drill-Strings
MATEC Web of Conferences, 2018 Stick-slip oscillation in drill-string is a universal phenomenon in oil and gas drilling. It could lead to the wear of drill bit, even cause catastrophic failure of drill-strings and measurement equipment.
Lin Wei, Liu Yang
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The Study on Harmonic Vibration of Drill String in Horizontal Well
, 2010 During exploitation of horizontal well drilling engineering, the problem of drill string failure is very serious, there are many reasons, and drill string vibrations are main reasons. In this paper drill string of horizontal well is object being studied.
Tie Yan, Chun Jie Han
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Nonlinear Model and Qualitative Analysis for Coupled Axial/Torsional Vibrations of Drill String
Shock and Vibration, 2016 A nonlinear dynamics model and qualitative analysis are presented to study the key effective factors for coupled axial/torsional vibrations of a drill string, which is described as a simplified, equivalent, flexible shell under axial rotation.
Fushen Ren +4 more
doaj +1 more source