Results 181 to 190 of about 4,548 (230)

Stabilization of torsional vibration in oilwell drillstring system

European Journal of Control, 2017
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Toumi, Samir, Beji, Lotfi, Mlayeh, Rhouma, Abichou, Azgal   +3 more
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COUPLED AXIAL AND TRANSVERSE VIBRATIONS OF OILWELL DRILLSTRINGS

Journal of Sound and Vibration, 1996
Abstract Transverse vibrations of drillstrings caused by axial loading and impact with the wellbore wall is studied. The drillstring is modeled as a slender beam with a simply-supported lower part. The Assumed Modes Method is used to obtain the governing equations of motion.
Christoforou, A.P., Yigit, AHMET SALİH
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Coupled drillstring dynamics modeling using 3D field-consistent corotational beam elements

Geoenergy Science and Engineering, 2023
Yifan Zhang, P. Ashok, Dongmei Chen, Eric van Oort   +3 more
semanticscholar   +1 more source

Analysis of Rock-Breaking Mechanism and Drillstring Dynamics of an Innovative Multi-Ridge-Curve-Shaped PDC Cutter

The Arabian journal for science and engineering, 2023
Xiaohua Zhu, Rui Li, Weiji Liu, Chao He
semanticscholar   +1 more source

Measurement and Analysis of Drillstring Dynamics

2019
We shown that drilling dynamics is a crucial problem must be attached great importance to. Our innovation lies in combining actual measurement with theoretical modeling. Two evaluation methods are compared systematically, such as theoretical and measurement methods.
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Analysis of Drillstrings in Curved Boreholes

Fall Meeting of the Society of Petroleum Engineers of AIME, 1974
American Institute of Mining, Metallurgical, and Petroleum Engineers, Inc. This paper was prepared for the 49th Annual Fall Meeting of the Society of Petroleum Engineers of AIME, to be held in Houston, Texas, Oct. 6–9, 1974. Permission to copy is restricted to an abstract of not more than 300 words. illustrations may not be copied.
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The Genesis of Torsional Drillstring Vibrations

SPE Drilling Engineering, 1992
Summary Inherent drilling characteristics of polycrystalline diamond compact (PDC) bits alone can be sufficient to excite severe torsional drillstring vibrations. The work presented here augments previous findings that torsional vibrations can result from the drilling characteristics of the bit itself.
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Experimental Study on Stick–Slip Vibration Characteristics of Drillstring-Bit-Rock Coupling System in Horizontal Well

The Arabian journal for science and engineering, 2023
Wei Long, Yuchun Kuang, Bo Yang, Huiya Zhong, Peng-Peng Fan, Tao Zhang, Guanghui Zhu, Jinwu Luo   +7 more
semanticscholar   +1 more source

Research on the Drillstring Nonlinear Dynamics with Fully Coupled Drillstring-Bit-Rock Model

SSRN Electronic Journal, 2022
liangjie mao, Maoyuan Ma, Mingjie Cai
openaire   +1 more source

Bifurcation and chaos in drillstring dynamics

Chaos, Solitons & Fractals, 1993
This paper contains an extensive discussion of the lateral vibrations of a stabilized drillstring as is used in drilling oil wells. The mathematical model leads to a system of two coupled second order ordinary differential equations with periodic forcing terms; using a rotating frame this system is turned into a four-dimensional autonomous system of ...
openaire   +2 more sources