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Calculation of Drag Torque Losses by Component of a Transfer Case
SAE Technical Paper Series, 2019<div class="section abstract"><div class="htmlview paragraph">In recent decades, fuel economy has become a key indicator of an automaker corporate social responsibility and a market differentiation factor, and ultimately it is regulated by government agencies such as EPA through CO<sub>2</sub> emissions compliance tests.
Ricardo Rivera Rodriguez +1 more
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Analysis of Wet Clutch Drag Torque and Optimization of Drag Torque Reduction Measures
2023Dongyue Qu, Yunpeng Yun, Dongpeng Zhao
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Quantifying Tortuosities by Friction Factors in Torque and Drag Model
SPE Annual Technical Conference and Exhibition, 2002Abstract Tortuosity occurs when a well deviates from a straight hole. The most commonly known tortuosity is the local dogleg severity variation associated with the use of steerable motors in "slide/drill/slide" drilling. However, there is a tortuosity that exists in many wells, which the authors will refer to as "micro-tortuosity" in ...
Tom Gaynor +3 more
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Effect of Steerable BHA on Drag and Torque In Wells
European Petroleum Conference, 1990Abstract Steerable bottom hole assemblies are often used when drilling deviated wells. Planning of such deviated wells often include studies of torque and drag calculations for the planned well-path and BHA's in order to have a fairly good idea of friction and torque to be encountered when drilling.
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Flight Dynamics of Boomerangs: Impact of Drag Force and Drag Torque
AIAA AVIATION 2020 FORUM, 2020Prasad Gudem +5 more
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A Numerical Simulation for Predicting the Gear Drag Torque
Transactions of the Korean Society of Mechanical Engineers - B, 2020Jongrak Choi, Nahmkeon Hur
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Residual Drag Torque on Magnetically Suspended Rotating Spheres
Review of Scientific Instruments, 1972An almost quantitative explanation of the residual drag torque on freely spinning steel spheres in magnetic suspension is given by comparing previously published experimental data with theoretical results of Keith (1963). Accordingly, the residual drag torque is mainly caused by the earth's rotation.
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Long-Step Steady State Torque and Drag Calculations
IADC/SPE International Drilling Conference and ExhibitionAbstract Recently, several initiatives have been launched to use generative methods for creating an ensemble of planned trajectories when evaluating alternatives for a drilling program. These automatically generated trajectories must be ranked according to their hydromechanical characteristics. Given that hundreds of trajectories need
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Scientific machine learning in torque and drag drillstring calculations
Extended reach (ER) drilling is a method of directional drilling defined by creating wellbores that stretch horizontally across the surface of the earth for long distances. This has proven to be a particularly useful method in the oil and gas industry, as the extra distance can allow operators to maximize productivity of a well, and also can allow themopenaire +1 more source
Drag Torque Analysis of Wet Multi-Disc Clutch
The Proceedings of Mechanical Engineering Congress, Japan, 2021Yuta OSAWA, Shayan Yu Yu, Takuma KATO
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