Results 41 to 50 of about 1,143,416 (115)

Dynamic Analysis of Stick-Slip Motion of Drillstring While Drilling

, 2011
Drilling dynamic dysfunction condition occurs when dynamic forces in the drillstring cause very high stresses and fatigue or physical damage to the string and thus reduced bit performance or caused wellbore damage.
R.. Ahmed, E.. Omojuwa, S.. Osisanya
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A review of torsional vibration mitigation techniques using active control and machine learning strategies

Petroleum
Drilling is one of the most challenging and expensive processes in hydrocarbon extraction and geothermal well development. Dysfunctions faced during drilling can increase the non-productive time (NPT) greatly, resulting in inflating the drilling cost and
Aditya Sharma, Khizar Abid, Saket Srivastava, Andres Felipe Baena Velasquez, Catalin Teodoriu   +4 more
doaj   +1 more source

Investigation on dynamics of drillstring systems from random viewpoint

, 2023
Drillstrings are one of the critical components used for exploring and exploiting oil and gas reservoirs in the petroleum industry. As being very long and slender, the drillstring experiences various vibrations during the drilling operation, and these ...
Qiu, Hongyuan
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Downhole Wireline Mechatronics and Drillstring Vibration Dynamics [PDF]

, 2016
The work is divided into two parts: The First part discusses and documents simulation investigations on the interactive effect of the different conveyance accessories tools and their designs on the wireline cable tension force, and how it can influence ...
Abdelzaher, Omar Mohamed
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Vortex-induced vibrations of a long flexible cylinder in shear flow [PDF]

, 2010
We investigate the in-line and cross-flow vortex-induced vibrations of a long cylindrical tensioned beam, with length to diameter ratio L/D = 200, placed within a linearly sheared oncoming flow, using three-dimensional direct numerical simulation.
Triantafyllou, Michael S., MICHAEL S. TRIANTAFYLLOU, Karniadakis, George E., REMI BOURGUET, Bourguet, Remi, GEORGE E. KARNIADAKIS   +5 more
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Drillstring Failure - Identification, Modeling, and Experimental Characterization

, 2019
Drilling is one of the costliest and risky activities in oil and gas industry due to complexity of interactions with downhole formation. Under such conditions, the uncertainty of drillstring behavior increases, and hence, it becomes difficult to predict ...
Hassan, Edris M., Abdo, Jamil, Boulbrachene, Khaled, Kwak, Jan C. T.   +3 more
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The effect of well path, tortuosity and drillstring design on the transmission of axial and torsional vibrations from the bit and mitigation control strategies

, 2016
As well designs become increasingly complicated, a complete understanding of drillstring vibrations is key to maximize drilling efficiency, to reduce drillstring dysfunction and to minimize drillstring, tool, and borehole damage.
Shor, Roman J.
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Dynamic analysis of drillstring with FEM by considering wellbore-drillstring contact

, 2012
International Conference on Applications and Design in Mechanical Engineering 2012 (ICADME 2012) organized by School of Mechatronic Engineering, Universiti Malaysia Perlis (UniMAP), 27th - 28th Februari 2012 at Bayview Beach Resort, Penang, Malaysia.In ...
Mohammadreza, Ghazavi, Maziar, Mohammadzadeh, Mohammad, Sahebkar   +2 more
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Nonlinear Drillstring Modeling with Applications to Induced Vibrations in Unconventional Horizontal Wells [PDF]

, 2017
A new mathematical model is developed for the nonlinear-static, linearized-dynamic, and fully nonlinear-dynamic behavior of drillstrings in arbitrary wellbore profiles.
Wilson, Joshua Kyle
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Laboratory scale evaluation of compliant drillstring with PDC bits in geothermal applications

, 2022
Polycrystalline diamond compact (PDC) bits have shown tremendous performance compared to roller cone bits and have gained attraction in deep geothermal drilling applications.
Barnett, Laymon
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