FIELD: oil and gas industry.
SUBSTANCE: invention relates to drilling oil and gas wells and can be used for optimum process control. Method for optimum adaptive control of well drilling, which comprises adaptation of a deterministic model of fractional-power type to conditions at bottom of change of its coefficients, calculation of optimum axial load and drilling well in optimal modes, achievement of which is determined from minimum frequency of drill string vibration. Method comprises multiple coefficients updating model by results of borehole measurements, calculation of optimum axial load on bit by a criterion of "maximum mechanical speed", execution of drilling at calculated parameters with optimum control of minimum vibration of drill string.
EFFECT: high accuracy of optimal drilling mode control and increasing mechanical speed of drilling well due to optimal drilling modes.
1 cl, 1 dwg
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