Swinging movement autoresonant electric drive with nonsymmetric excitation of dynamically counter-balanced drilling string on carrying cable
About authors
- 1 — Ph.D., Dr.Sci. professor Saint Petersburg State Mining Institute (Technical University)
- 2 — post-graduate student Saint Petersburg State Mining Institute (Technical University)
Abstract
Considered nonsymmetric mode of drill bit oscillations when forming a unipolar electromagnetic torque on each cycle oscillations of dynamically balanced drill . Developed a method for estimating speed of rotation drill around its axis when working in the nonsymmetric mode at first approximation .
Keywords:
electric drive
autoresonance
drilling string
oscillations
method
viscous friction
work
damping factor
References
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- Пат. № 2337225 РФ. Электромеханический колонковый буровой снаряд. / Э.А.Загривный, В.В.Рудаков, С.С.Стародед, Ю.А.Гаврилов. Опубл. 27.10.2008.
- Стародед С.С. Электромеханический колонковый буровой снаряд на грузонесущем кабеле для очистки призабойных зон нефтяных скважин / С.С.Стародед, Э.А.Загривный // Записки Горного института. СПб, 2007. Т.173.
- Тимошенко С.П. Колебания в инженерном деле. М., 1967.
- Пат. № 2009146092 РФ. Электромеханический колонковый буровой снаряд / Э.А.Загривный, А.Н.Фоменко В.В.Иваник. Опубл. 11.12.2009.
- Fomenko A.N. Resonant electric drive of dynamically counterbalanced drilling string on carrying cable with swinging movement. «Challenges and solutions in mineral industry». 2009.
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