FIELD: measuring equipment.
SUBSTANCE: method for calculation of a local geomagnetic disturbance field is proposed, according to which: the Earth's magnetic field elements are measured in at least one known geodetic position; the Earth's magnetic field elements are measured in a position near the location for which the local geomagnetic disturbing field must be calculated; the perturbation function is determined based on the Earth's magnetic field measurements performed in at least one known geodetic position and the transfer function of magnetic disturbance field measurement is calculated between at least one known geodetic position and an adjacent position to calculate the local geomagnetic disturbance field in the adjacent position. At that, the calculation of the transfer function of the magnetic disturbance field includes calculation of the Fourier window transformation, measurements in at least one known geodetic position, and measurements in the adjacent position by the least-square inversion.
EFFECT: increased accuracy of geomagnetic survey results obtaining in order to increase the efficiency of its application in the field of directional drilling of wells.
25 cl, 6 dwg
