Results 121 to 130 of about 425 (156)

The Effect of Drilling Mud Flow on the Lateral and Axial Vibrations of Drill String

ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis, Volume 5, 2010
In this research, the effects of drilling mud flow and WOB force on the lateral vibration of drill string are investigated. To this goal, the kinetic and potential energy of drill string for axial and lateral vibrations are written in an integral equation.
Reza Kazemi, Ali Asghar Jafari, Mohammad Faraji Mahyari   +2 more
openaire   +1 more source

The Effects of Drilling Mud and Weight Bit on Stability and Vibration of a Drill String

Journal of Vibration and Acoustics, 2011
The main goal of this research is to analyze the effects of drilling mud flow rate, drill string weight, weight on bit and angular velocity on stability and vibration of a drill string. To this end, kinetic and potential energies of a rotating drill string are written while axial and lateral vibrations are considered.
Ali Asghar Jafari, Reza Kazemi, Mohammad Faraji Mahyari   +2 more
openaire   +1 more source

System and method for damping vibration in a drill string

The Journal of the Acoustical Society of America, 2008
A system for damping vibration in a drill string can include a valve assembly having a supply of a fluid, a first member, and a second member capable of moving in relation to first member in response to vibration of the drill bit. The first and second members define a first and a second chamber for holding the fluid.
openaire   +1 more source

Analysis of the Influences of Drilling Fluid Flow Velocity inside and outside the Drilling String on Drilling String Lateral Vibration Frequency

Advanced Materials Research, 2013
Drilling string lateral vibration is a severe damage,which is influenced by many complex factors. This paper makes a theoretical analysis of the drilling string lateral vibration frequency caused by drilling fluid flow velocity inside and outside the drilling string, which supplies some evidence for calculating rotation speed of rotary table and ...
Tie Yan, Li Wang, Xiao Feng Sun, Jun Bo Qu   +3 more
openaire   +1 more source

Analysis of the Influences of Drilling Fluid Flow Velocity inside and outside the Drilling String on Drilling String Lateral Vibration Frequency

Advanced Materials Research, 2014
Drilling string lateral vibration is a severe damage,which is influenced by many complex factors. This paper makes a theoretical analysis of the drilling string lateral vibration frequency caused by drilling fluid flow velocity inside and outside the drilling string, which supplies some evidence for calculating rotation speed of rotary table and ...
De Da Hou, Qing Bin Zhang, Yun Hua Cui, Cheng Dong Zhang   +3 more
openaire   +1 more source

On the formation of the drill string resonance vibrations

Construction of Oil and Gas Wells on Land and Sea, 2022
V.K. Khegai, K.V. Khegai
openaire   +1 more source

PASSIVE VIBRATION CONTROL OF PERIODIC DRILL STRING

2017
In this dissertation, the stop and pass bands (i.e. the band gaps) characteristics are determined for gyroscopic systems by developing an approach which is compatible with such class of systems which is based on the concept of Bloch wave propagation in periodic structures.
openaire   +2 more sources

Longitudinal and torsional vibration of drill strings

1986
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1986. ; MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING. ; Bibliography: leaf 44. ; by Khaja Zameeruddin Khan. ; M.S.
openaire   +1 more source

Drill String Vibration Monitoring as an Element of Automatic Control of Drilling

Proceedings of the 5th Workshop for Young Scientists in Computer Science and Software Engineering, 2022
Vladimir Morkun, Natalia Morkun, Vitalii Tron, Alona Haponenko, Iryna Haponenko, Evhen Bobrov   +5 more
openaire   +1 more source

Torsional Vibration of Drill String Induced by Heave Motion in Deepwater Drilling

Journal of Offshore Mechanics and Arctic Engineering
Abstract Understanding drill string dynamics is essential to improving drilling efficiency and preventing accidents. Previous studies have mainly focused on self-excited oscillations due to stick–slip and bit-bounce. However, in deepwater drilling, large weight-on-bit (WOB) fluctuations due to heave motion are a significant concern that ...
Tatsuya Kaneko, Tomoya Inoue, Ryota Wada, Tokihiro Katsui, Hiroyoshi Suzuki   +4 more
openaire   +1 more source