Results 51 to 60 of about 9,449 (231)
Torsional vibrations of helically buckled drill-strings : Experiments and FE modelling [PDF]
, 2016 Acknowledgements The authors wish to thank Dr. Joseph Paez Chavez for his help in experimental work and acknowledge the financial support of BG Group plc.Peer reviewedPublisher ...
Hamaneh, V. V. +2 more
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Petroleum, 2023 Improper drilling parameters may cause severe vibration of drill string which leads to reduce the rate of penetration and drilling tool premature failure accidents in the drilling process of ultra-deep well.
Yuan Li +4 more
doaj +1 more source
Effect Of Drill String Rotation On The Dynamic Response Of Drilling Risers
International Journal of Applied Mechanics and Engineering, 2015 The effect of the rotation of a drill string on the response of a drilling riser has been studied. A governing equation for the flexural response that incorporates the effect of the drill string rotation is developed from first principles, and the ...
I.E. Major, A. Big-Alabo, S. Odi-Owei
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Incipient Regimes of Drill Bit Whirlings on Uneven Bottoms of Deep Bore-Holes [PDF]
, 2016 This paper studies the problem of whirl vibrations of rotating drill string bit under conditions of its contact interaction with the bore-hole bottom surface.
Glazunov, Sergiy M. +2 more
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Natural Gas Industry B, 2019 In this paper, analyses on the mathematical model presented in [Hosseinzadeh Ali and Bakhtiari-Nejad Firooz. A new dynamic model of coupled axial-torsional vibration of a drill string for investigation on the length increment effect on stick-slip ...
Zifeng Li
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, 2009 In the oil and gas industry, an underreamer is a tool used to extend and enlarge the diameter of a previously-drilled bore. The problem proposed to the Study Group is to obtain appropriate mathematical models of underreamer dynamics, in forms that will ...
Barton, David +8 more
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The technology improvement and development of the new design-engineering principles of pilot bore directional drilling [PDF]
, 2016 This paper addresses the effectiveness of impact energy use in pilot bore directional drilling at pipe driving. We establish and develop new design-engineering principles for this method.
Saruev, Lev Alekseevich +2 more
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Research on Vibration Reduction and ROP Acceleration for Drilling in KOA Oilfield,Kazakhstan
Shiyou jixie, 2023 The KOA oilfield is located in the eastern margin of the Caspian Basin,Kazakhstan.The shallower Upper Permian of the oilfield is found with severe interbeding between sandstone and mudstone as well as interlayers of mudstone/slate and conglomerate.The ...
Wang Jianning +4 more
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Improvement of hole drilling technology for ore drawing intensification [PDF]
, 2018 Purpose. The improvement of hole drilling for increasing the mineral recovery ratio by ore drawing improvement through blasting. Methods. The drilling parameters were examined for rock dumps.
Gaponenko, I +3 more
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Analysis of Drill String Whirling Characteristics Based on Near-Bit Measurement Data
Shiyou jixieThe displacement signal of drill string vibration is difficult to be obtained in the actual drilling process. To further understand the vibration characteristics of drill string when whirling motion occurs in wellbore during drilling process， first， the ...
Zhang Tao +5 more
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