FIELD: oil and gas industry.
SUBSTANCE: method includes determination of nominal model of downhole drilling dynamics based on sensor measurements from the downhole drilling equipment, determination of uncertainty for the nominal model of downhole drilling dynamics, determination of set of models based on uncertainty of the nominal model of downhole drilling dynamics which deviate from the nominal model of drilling dynamics, and creation of a virtual controller for downhole drilling equipment based on the nominal model and a set of models that deviate from the nominal model.
EFFECT: increased control accuracy of wellbore trajectory.
23 cl, 10 dwg
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