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Longitudinal Vibrations of a Drill String
The Journal of the Acoustical Society of America, 1965When drilling an oil well with a rotary drill, the penetration rate often can be substantially increased by superimposing a vibratory motion on the rotating bit. In order to evaluate drilling methods that would include both rotary and vibratory action, a study has been made on the vibrational characteristics of long drill string. The resonant frequency
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Data transmission in a drill string
The Journal of the Acoustical Society of America, 1984Data is transmitted through a drill string by means of acoustical energy by transmitting an acoustical signal for a first predetermined interval and ceasing transmission of the signal for a second predetermined interval to represent a first binary state; ceasing transmission of the signal for a third predetermined interval to represent a second binary ...
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Ground Measurement of Noise Characteristics in Drill String During Drilling
SSRN Electronic Journal, 2022Liu Yongwang +4 more
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Analysis of the Influence of Downhole Drill String Vibration on Wellbore Stability
Machines, 2023Li Yafeng
exaly
Nonlinear dynamic characteristics of the drill-string for deep-water and ultra-deep water drilling
Journal of Petroleum Science and Engineering, 2022Feng Chen
exaly
Nonlinear dynamics of lump mass model of drill-string in horizontal well
International Journal of Mechanical Sciences, 2020Zhiqiang Huang +2 more
exaly
Parametric studies on drill-string motions
International Journal of Mechanical Sciences, 2012Balakumar Balachandran +2 more
exaly