Results 221 to 230 of about 510,808 (288)
Some of the next articles are maybe not open access.
A Multibody Dynamic Model of Drillstring for Torque and Drag Analysis
Journal of Offshore Mechanics and Arctic Engineering, 2015Excessive torque and drag in the wellbore can result in the buckling and the failure of the drillstring. Accurate predicting torque and drag is important in drilling operations. Due to the nature of the drilling, determination of torque and drag is a dynamic problem.
Yang Caijin +4 more
openaire +3 more sources
Journal of tribology, 2023
The wet clutch, a crucial component of the vehicle transmission system, experiences high-frequency impact and friction between the friction plate and the steel plate under high-speed separation conditions.
Lin Zhang +3 more
semanticscholar +1 more source
The wet clutch, a crucial component of the vehicle transmission system, experiences high-frequency impact and friction between the friction plate and the steel plate under high-speed separation conditions.
Lin Zhang +3 more
semanticscholar +1 more source
Study on drag torque characteristicsof wet multiplate clutch under high-speed operating condition
Proceedings of the Institution of mechanical engineers. Part D, journal of automobile engineering, 2023In order to study the characteristics of the drag torque of wet multi-plate clutches at high speed, a mathematic model of the drag torque considering oil-gas two-phase flow was established.
Jie Li +4 more
semanticscholar +1 more source
Torque and Drag Calculations in Multilateral Wells
SPE Nigeria Annual International Conference and Exhibition, 2022Abstract Multilateral drilling technology has advanced to the point that it is now feasible to explore and extract resources from previously unprofitable reservoirs. It may also help to enhance field development management by allowing for more efficient fluid flow from the formation.
Darlington Etaje +2 more
openaire +1 more source
Proceedings of the Institution of mechanical engineers. Part D, journal of automobile engineering, 2022
The drag torque produced by the viscous shearing action of lubricating oil is an important component of the power loss of wet clutches. Studying the prediction model and its influencing factors will provide important theoretical support for reducing the ...
Chunjie Xu +6 more
semanticscholar +1 more source
The drag torque produced by the viscous shearing action of lubricating oil is an important component of the power loss of wet clutches. Studying the prediction model and its influencing factors will provide important theoretical support for reducing the ...
Chunjie Xu +6 more
semanticscholar +1 more source
Mechanism and Machine Theory, 2021
The no-load drag torque is a crucial factor in the design phase to estimate the power required by the electric motor in electro-mechanical actuators (EMA).
A. Bertolino +3 more
semanticscholar +1 more source
The no-load drag torque is a crucial factor in the design phase to estimate the power required by the electric motor in electro-mechanical actuators (EMA).
A. Bertolino +3 more
semanticscholar +1 more source
Correlation between preload and no-load drag torque of ball screws
International Journal of Machine Tools and Manufacture, 2016Changguang Zhou, Zengtao Chen, Yi Ou
exaly +2 more sources
SPE Annual Technical Conference and Exhibition, 2020
Abstract It is generally acceptable to use soft string model for simple wells and stiff string for high dogleg wells. But these models fail to reveal the complex mechanical behaviors of tubular string in tripping in, tripping out, and sliding drilling operations with time as some segments of tubular string may move upward and downward ...
Robello Samuel, Wenjun Huang
openaire +1 more source
Abstract It is generally acceptable to use soft string model for simple wells and stiff string for high dogleg wells. But these models fail to reveal the complex mechanical behaviors of tubular string in tripping in, tripping out, and sliding drilling operations with time as some segments of tubular string may move upward and downward ...
Robello Samuel, Wenjun Huang
openaire +1 more source
Industrial Lubrication and Tribology, 2021
Purpose This paper aims to design a single and double throat oil groove structure, which can reduce the drag torque of the wet clutch. Design/methodology/approach A three-dimensional simulation model was established herein using the computational ...
Chengjun Wang +6 more
semanticscholar +1 more source
Purpose This paper aims to design a single and double throat oil groove structure, which can reduce the drag torque of the wet clutch. Design/methodology/approach A three-dimensional simulation model was established herein using the computational ...
Chengjun Wang +6 more
semanticscholar +1 more source