FIELD: mining; physics.
SUBSTANCE: method involves implementation of wire coil under power for generation of magnetic field in proximity to well. Tube segments plurality trips in and out of well, registering of changes in magnetic field caused by trips of connecting couplings of tube segments through magnetic field, with this changes registered by means of a device for measuring a magnetic flow, filtration of thus obtained signal and calculation of number of changes result in obtaining the number of segments of tubes.
EFFECT: automatic inventory of number of sections of cased or production tubes lowered into well.
26 cl, 5 dwg
