Results 51 to 60 of about 3,289 (243)
Research on Evaluation Model of Stick-Slip Vibration Intensity Based on PCA-LSTM
Shiyou jixie, 2023 Stick-slip vibration of downhole tools during petroleum drilling can lead to cyclic sticking and slip of the bits,which may cause failure of bits and bottomhole assembly(BHA)and consequently downhole accidents.Considering the latest downhole measurement ...
Zhang Xin +3 more
doaj
Advanced Materials Technologies, EarlyView.Hierarchical multi‐material TPMS lattices are engineered as flexible tactile sensors by combining soft and stiff elastomeric layers with a conformal conductive coating. The bilayer architecture delivers sensitivity at low pressures while maintaining a broad detectable range under large loads, enabling reliable pressure and vibration monitoring for ...
Reza Noroozi +3 more
wiley +1 more source
, 2020 This paper studies the problems of stick-slip mitigation and speed tuning for a lumped-parameter drill-string system by using a proportional-derivative feedback controller via path-following analysis.
Y Liu (4702669) +4 more
core
Hysteretic behavior of a belt tensioner: modeling and experimental investigation [PDF]
, 2005 In this paper we describe the modeling of the hysteretic behavior of belt tensioners. An initial experimental device is composed only of the tensioner by using forcing frequencies, preloads and deflection amplitudes.
Dufour, Regis +2 more
core +1 more source
Advanced Robotics Research, EarlyView.This review identifies key design considerations for insect‐inspired microrobots capable of multimodal locomotion. To draw inspiration, biological and robotic strategies for moving in air, on water surfaces, and underwater are examined, along with approaches for crossing the air–water interface.
Mija Jovchevska +2 more
wiley +1 more source
Experimental Study on the Slip–Stick Vibration of Plane Gate
The slip–stick vibration intensity of a plane gate is usually large, which often brings serious safety risks to itself and the auxiliary structure. The slip–stick vibration of a plane gate is investigated using an experimental model test. The
Yanzhao Wang +3 more
core +1 more source
Improved Methods to Understand and Mitigate Stick-Slip Torsional Vibrations
, 2018 In this paper, it will be shown how stick-slip vibration distributions can be used to evaluate drill string and parameter redesign options to mitigate stick-slip on the next well.
L.. Wang, G. S. Payette, J. R. Bailey
core +1 more source
A Superlubricated Magnetically Steerable Microcatheter with Integrated Optical and Fluidic Channels
Advanced Robotics Research, EarlyView.A magnetically steerable microcatheter with integrated optical and fluidic channels is developed for multifunctional navigation in tortuous anatomical environments. A surface‐grafted hydrogel coating enables low‐friction actuation. The device demonstrates stable light and fluid delivery during magnetic manipulation, offering a compact platform for ...
Yuntian Du +5 more
wiley +1 more source
Nonlinear analysis of axial-torsional vibration of drill string based on a 3 DOF model
Advances in Mechanical Engineering, 2022 Based on a model with three-degree-of-freedom, the nonlinear coupled axial-torsional vibration of drill string is numerically studied considering a modified contact model of bit-rock interaction.
Tao Yu +5 more
doaj +1 more source
Stick-slip whirl interaction in drillstring dynamics
, 2002 This paper attempts to explain the complicated behavior of oilwell drillstring motionwhen both torsional stick-slip and lateral whirl vibration are involved.
Campen, DH Dick van +5 more
core +1 more source