FIELD: geophysical investigations of wells in oil and other industries. SUBSTANCE: method of control of motion of formation fluid in casing string-borehole annulus of development well includes measurement along the wellbore at various operating conditions, temperature, or signal of passive acoustic noise and detection of possible zones of fluid motion in annulus, additional registration in these zones of the amplitude of electromagnetic field in frequency range of 60-280 Hz. Presence of anomalies are indicative of intervals of annulus crossflows of formation water, and form of anomalies are indicative of direction of motion of formation water. EFFECT: higher efficiency. 4 cl, 1 dwg
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