Results 1 to 10 of about 19,874 (175)

Stick–Slip Vibration Characteristics Study of the Drill String Based on PID Controller [PDF]

open access: goldEnergies, 2023
In order to address the issue of drill string stick–slip vibration, which leads to drill bit wear and reduces the drilling velocity, we conducted a study on the characteristics of stick–slip vibration using a proportional-integral-derivative (PID ...
Baoyong Yan   +3 more
doaj   +2 more sources

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

open access: greenShiyou 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   +6 more
doaj   +1 more source

The impact of multidirectional excitation on the stick–slip vibration characteristics of a drill string [PDF]

open access: yesScientific Reports
Stick–slip vibration is a common phenomenon in ultra-deep drilling that significantly impacts the failure of both drill bits and drill tools. The most direct and efficacious approach to alleviating the stick–slip vibration of the drill string in the ...
Zhao Hongshan, Wang Wenchang, An Kaixian
doaj   +2 more sources

Suppression of Drill-String Stick-Slip Vibration [PDF]

open access: diamondMATEC Web of Conferences, 2018
We investigate experimentally and numerically suppression of drill-string torsional vibration while drilling by using a sliding mode control. The experiments are conducted on the novel experimental drilling rig developed at the University of Aberdeen [1]
Vaziri Vahid   +2 more
doaj   +2 more sources

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

open access: greenShiyou 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   +4 more
doaj   +1 more source

Study of the influences of rotary table speed on stick-slip vibration of the drilling system

open access: diamondPetroleum, 2015
Stick-slip vibration presents one of the major causes of drilling problems, such as premature tool failures, low drilling efficiency and poor wellbore quality.
Liping Tang   +4 more
doaj   +2 more sources

The inhibition mechanism of ultrasonic vibration on stick-slip phenomenon of sliding friction pair [PDF]

open access: yesScientific Reports
Frictional vibration often occurs during sliding, commonly referred to as the stick-slip phenomenon. It is more likely to occur in the range of the Stribeck curve, where friction and velocity have negative gradient characteristics.
Lingjie Luo   +6 more
doaj   +2 more sources

Suppression of Stick-Slip Vibration of Drill String by Fractional-Order PID Control

open access: greenShiyou jixie, 2020
Stick-slip vibration of drill string is one of the important reasons leading to accelerated wear and premature damage of drilling equipment, reduced drilling safety and reduced drilling efficiency.
Zhang Qizhi, Xu Shuai
doaj   +1 more source

Research on Mechanism of Stick-Slip Vibration Induced by Friction between Drill String and Borehole Wall in Horizontal Well

open access: greenShiyou jixie, 2021
The stick-slip vibration of the horizontal well drill string system seriously threatens the safety of downhole drill strings and tools, reduces the drilling efficiency of the horizontal section, making the drill bit fail prematurely.
Zhu Jieran   +5 more
doaj   +1 more source

Stick-slip instabilities in sheared granular flow: the role of friction and acoustic vibrations

open access: green, 2015
We propose a theory of shear flow in dense granular materials. A key ingredient of the theory is an effective temperature that determines how the material responds to external driving forces such as shear stresses and vibrations. We show that, within our
Carlson, J. M.   +3 more
core   +4 more sources

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