Vladimir Litvinenko, Doctor of Engineering Sciences, Professor, Saint-Petersburg Mining University, Russian Federation;
Mikhail Dvoinikov, Doctor of Engineering Sciences, Professor, Saint-Petersburg Mining University, Russian Federation.
Abstract
Paper presents the analysis of the investigation results of vibrational accelerations and beating amplitudes of the downhole drilling motor, which help to define the ranges of optimum energy characteristics of the gerotor mechanism, ensuring its stable operation.
Dependencies describing the operation of the «drilling bit – rotary steerable system with power screw section – drilling string» system and the values of the self-oscillation boundaries and the onset of system resonance when it is used jointly, were defined as a result of computational and full-scale experimental research.
A mathematical model is proposed, which allows determining the optimal range of technological parameters for well drilling, reducing the extreme vibration accelerations of the bottomhole assembly by controlling the torque-power and frequency characteristics of the drilling string, taking into account the energy characteristics of the power screw section of the rotary steerable system. Recommendations on the choice of drilling mode parameters were given.
Keywords: well drilling; oscillation amplitude; downhole screw motor; drilling string.
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Publications:
- Nutskova M. V., Dvoynikov M. V., Kuchin V. N., Improving the Quality of Well Completion in Order to Limit Water Inflows / Journal of Engineering and Applied Sciences, № 22, Т 12, 2017. С 5985 - 5989. / Journal of Engineering and Applied Sciences, № 22, Т 12, 2018. С 5985 - 5989.
- Dvoynikov M. V., Blinov P. A., Rheological and Filtration Parameters of the Polymer Salt Drilling Fluids Based on Xanthan Gum / Journal of Engineering and Applied Sciences, № 13, Т 14, 2018. pp. 5661 - 5664.
- Blinov P. A., Dvoynikov M. V., Influence of Mud Filtrate on the Stress Distribution in the Row Zone of the Well / International Journal of Applied Engineering Research, № 15, Т 12, 2017. pp. 5214 - 5217.
- Dvoynikov M. V., Syzrantsev V. N., Syzrantseva K. V., Designing a high resistant, high-torque downhole drilling motor / nternational Journal of Engineering, Transactions A: Basics, № 10, V 30, 2017. pp. 1615 - 1621.
- Dvoynikov M. V., Blinov P. A., The Process Of Hardening Loose Rock By Mud Filtrat / International Journal of Applied Engineering Research, № 9, 2016. С 6630 - 6632.
Scientifiс periodical «Zapiski Gornogo Instituta / Journal of Mining Institute» has been published since 1907 as a periodical scientific and scientific-educational edition in Saint-Petersburg Mining University. The periodicity of publishing is 6 volumes per year.