FIELD: mining.
SUBSTANCE: method contains the following stages: (a) damping of sticking-slipping oscillations using a drilling mechanism above a drilling string, (b) control of drilling mechanism speed of rotation using a PI controller, (c) turning of a PI controller so that the drilling mechanism absorbs a larger part of twisting energy from the drilling string at the frequency of sticking-slipping oscillations or near it.
EFFECT: tuning of proportional-integral or proportional-integral-differential controller for damping of twisting waves energy at sticking-slipping frequency or near it.
21 cl, 8 dwg
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Authors
Dates
2013-04-10—Published
2008-12-02—Filed