Results 251 to 260 of about 56,749 (281)
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Flight Dynamics of Boomerangs: Impact of Drag Force and Drag Torque

AIAA AVIATION 2020 FORUM, 2020
Prasad Gudem   +5 more
openaire   +1 more source

Effect of Steerable BHA on Drag and Torque In Wells

European Petroleum Conference, 1990
Abstract 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.
openaire   +1 more source

Modeling and Parametric Study on Drag Torque of Wet Clutch

2012
In order to analyze the power torque characteristics of wet clutch produced under the disengaging state and reduce the drag torque of wet clutch, a flow rate equation under full film state was deduced based on the Navier-Stokes equations and a new equation calculated oil film equivalent radius was derived according to the relationship of oil flow rate ...
Heyan Li, Qi Jing, Biao Ma
openaire   +1 more source

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 them
openaire   +1 more source

Calculation of drag and torque coefficients by time-independent lattice-Boltzmann method

Physical Review E, 2014
A method is developed to calculate the drag and torque coefficients of an isolated particle in a Stokes flow. The method is based on solving the time-independent lattice-Boltzmann equation. The advantage of this method is that the algorithm is easy to code, the method can be applied to any shape of the particle without complicated implementation, and ...
openaire   +2 more sources

Robust Torque-and-Drag Analysis for Well Planning and Drillstring Design

Journal of Petroleum Technology, 1998
This article is a synopsis of paper SPE 39321, "A Robust Torque-and-Drag-Analysis Approach for Well Planning and Drillstring Design," by O.A. Adewuya, SPE, and S.V. Pham, SPE, Baker Hughes Inteq, scheduled for presentation at the 1998 IADC/SPE Drilling Conference, Dallas, 3-6 March.
openaire   +1 more source

Drag and Torque Prediction Based on Well Trajectory Similarity

2022
Yuanyuan Shen   +4 more
openaire   +1 more source

Drag Torque Model with Decoupling of Temperature and Radius

Journal of Computational and Theoretical Nanoscience, 2016
Bo Zhang, Zhuo Wang, Tao Wang
openaire   +1 more source

Attitude dynamics of satellites with variable shape mechanisms using atmospheric drag torque and gravity gradient torque

Acta Astronautica, 2023
Kiyona Miyamoto   +3 more
openaire   +1 more source

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