Results 21 to 30 of about 46,089 (274)

Test on Stick-Slip Vibration of PDC Bit in Horizontal Wells

Shiyou jixie, 2023
Stick-slip vibration can lead to PDC bit damage and downhole instrument failure,while testing is a method commonly used to study the stick-slip vibration of drill string system in horizontal wells.In the paper,a micro PDC bit was designed to conduct rock
Long Wei, Kuang Yuchun, He Jingbin, Lin Wei, Han Yiwei, Zhang Tao, Zhu Guanghui   +6 more
doaj  

Stick-slip vibration behaviors of BHA and its control method in highly-deviated wells

Alexandria Engineering Journal, 2022
Stick-slip vibration is a common phenomenon met in oil gas drilling, especially in the complex trajectory wells such as highly-deviated wells, it will cause the earlier failure of BHA (bottom hole assembly) and lower drilling efficiency.
Weiji Liu, Feilong Yang, Xiaohua Zhu, Xingwu Chen   +3 more
doaj   +1 more source

Role of friction-induced torque in stick-slip motion [PDF]

, 2010
We present a minimal quasistatic 1D model describing the kinematics of the transition from static friction to stick-slip motion of a linear elastic block on a rigid plane.
Bennewitz R., Bhushan B., Burridge R., D. K. Dysthe, J. Scheibert, Johnson K. L., Kanamori H., Persson B. N. J., Persson B. N. J., Rubinstein S. M., Scheibert J., Scheibert J. Debrégeas G. Prevost A., Scholz C.   +12 more
core   +3 more sources

Identification of different manifestations of nonlinear stick–slip phenomena during creep groan braking noise by using the unsupervised learning algorithms k-means and self-organizing map

Mechanical systems and signal processing, 2022
Creep groan is a friction-induced, low-frequency vibration and noise phenomenon of a vehicleʼs brake system which is excited by a repeating stick-slip effect.
J. Prezelj, J. Murovec, Severin Huemer-Kals, K. Häsler, P. Fischer   +4 more
semanticscholar   +1 more source

Stick-slip instability for viscous fingering in a gel [PDF]

, 2002
The growth dynamics of an air finger injected in a visco-elastic gel (a PVA/borax aqueous solution) is studied in a linear Hele-Shaw cell. Besides the standard Saffmann-Taylor instability, we observe - with increasing finger velocities - the existence of
C Wagner, D Bonn, D Higgins, G Debrégeas, Garlick M., J.-M. di Meglio, McCloud K. V., N Puff   +7 more
core   +3 more sources

Stick–slip in hand guidance of palletizing robot as collaborative robot

International Journal of Advanced Robotic Systems, 2022
Stick–slip is a challenging problem in palletizing robots and constitutes one of the main problems in precision positioning control. This study analyzed the stick–slip of a four-degree-of-freedom ceiling-mounted hand-guiding collaborative robot in a ...
Yun-Ju Chuang, Ho Chang, Yin-Tung Sun, Tsing-Tshih Tsung   +3 more
doaj   +1 more source

Hydraulic Conditions for Stick‐Slip Tremor Beneath an Alpine Glacier

Geophysical Research Letters, 2022
Accumulating evidence suggests that glacier basal motion can produce seismogenic stick‐slip events caused by frictional resistance at the ice‐bed interface.
M. Köpfli, D. Gräff, Bradley Paul LIPOVSKY, Paul Antony Selvadurai, D. Farinotti, F. Walter   +5 more
semanticscholar   +1 more source

Stick-slip vibration characteristic of PDC bit cutting composite strata based on discrete element method

Meikuang Anquan, 2023
For the problem of stick-slip vibration caused by hard rock formation in the process of drill bit penetrating in coal mine, and the discrete element method (DEM) was employed to study the rock cutting performance and stick-slip vibration behavior of PDC ...
Jian CHEN, Li WANG, Yong WANG, Xuqian DOU, Zhizai JIE, Hongyan CHEN, Mingqiang LI   +6 more
doaj   +1 more source

Study on Drill String Stick-slip Vibration Pattern Under Bit-Rock Interaction

Shiyou jixie, 2023
Stick-slip vibration leads to high-frequency shear stress on drill string and premature fatigue of drill string.Therefor,the torsional vibration model of drill string system considering bit-rock interaction was built by coupling the bit-rock interaction ...
Xing Xuesong, Pang Zhaoyu, Wu Zhiqiang, Gan Lunke, Mao Liangjie   +4 more
doaj  

Stick-Slip Motion and Phase Transition in a Block-Spring System

, 2002
We study numerically stick slip motions in a model of blocks and springs being pulled slowly. The sliding friction is assumed to change dynamically with a state variable.
Batista A. A., Burridge R., Carlson J. M., Carlson J. M., Elmer F.-J., Gee M. L., Hayakawa H., Langer J. S., Nasuno S., Scholz C. H., Vieira M. D.   +10 more
core   +1 more source