Results 51 to 60 of about 345,800 (104)
Axial Vibration Analysis on Drillstring [PDF]
, 2015 The problem of drill string vibration occurs in drilling operations and it will affect the usage life of drill pipe and drill bits. Three types of vibration, which are axial, lateral and torsional vibrations exist in the drill string.
HOW, KEK JIA
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A Literature Review of Approaches for Stick-Slip Vibration Suppression in Oilwell Drillstring
Advances in Mechanical Engineering, 2014 Stick-slip vibration presents one of the main problems in the quality of drilling performance limiting tool life and productivity. This type of vibration can be suppressed by means of many approaches, such as varying parameters and use of control tools ...
Xiaohua Zhu, Liping Tang, Qiming Yang
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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 +2 more
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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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Contact Dynamics of a Rotary Drillstring System in Elliptical Wellbores
MachinesAs drilling depths continue to increase in oil and gas operations, the associated downhole environment has grown more complex. Data from recent field measurements reveals significant differences between the major and minor axes of the wellbore cross ...
Haiquan Li +5 more
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A Finite Element Method With Full Bit-Force Modeling to Analyze Drillstring Vibration
, 2017 Drillstring vibration is detrimental to drilling operations. It is crucial to understand the underlying mechanisms to circumvent these vibrations and to help improve drilling performance.
Madhu Vadali +4 more
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, 2013 Axial vibration generators improve oilwell drilling efficiency by reducing drillstring-wellbore friction. However, tool vibration can cause unwanted vibrations of the drillstring, and thus premature failure of components.
Ghasemloonia, Ahmad
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Drill-String Vibration Suppression Using Hybrid Magnetorheological Elastomer-Fluid Absorbers
ActuatorsRotary drilling systems with PDC bits, commonly used for drilling deep wells in the production and exploration of oil and natural gas, frequently encounter severe vibrations.
Jasem M. Kamel +2 more
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Reconstructed drill-bit motion for sonic drillstring dynamics [PDF]
, 2019 International audienceIn tunnel excavation that integrates Resonant Sonic Head Drilling (RSHD) machine, one of the important stability problem to deal with is represented by the necessity to assign axial vibration amplitude induced by the RSHD to a ...
Ammari, Kaïs, Beji, Lotfi
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Drillstring Vibration Identification Based on Data Augmentation and Automated Machine Learning
Shiyou jixieAccurate identification of downhole drillstring vibration is significant for improving drilling efficiency and reducing complex risks. However， traditional vibration identification mechanisms and methods are based on several hypotheses， making them ...
Pan Tao +6 more
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