Method and system for controlling vibrations in borehole...

Details Method and system for controlling vibrations in borehole... Method and system for controlling vibrations in borehole...

G - Physics

05

D

341/71

G05D 19/02 (2006.01) E21B 41/00 (2006.01) E21B 44/00 (2006.01) E21B 47/00 (2006.01)

Patent

CA 2035823

Vibrations in borehole equipment are controlled by defining the energy flow through the equipment as a product of an "across" variable times a "through" variable, wherein fluctuations in one variable are measured and the energy flow is controlled by adjusting the other variable in response to the measured fluctuations in said one variable. Suitable variables for defining the energy flow are voltage times current of an electrical drive, pressure times flowrate of a hydraulic drive, or torque times angular velocity of any rotary drive.

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