ELECTROMAGNETIC-ACOUSTIC INTROSCOPE FOR DIAGNOSTIC INSPECTION OF CASING STRINGS AND TUBING OF WELLS Russian patent published in 2020 - IPC G01N29/04 

FIELD: physics.

SUBSTANCE: use for diagnostic inspection of casing strings and well tubing. Electromagnetic-acoustic introscope for diagnostic testing casing and tubing wells consists of downhole module in protective housing, including onboard controller, ground electronics unit comprising a power supply, a ground controller and a downhole module depth determining system in the protective housing, and a geophysical cable, wherein in downhole module in protective housing there is a bias current switching unit, excitation signal generation unit, unit for multiplexing and conversion of reflected signal and N electromagnetic-acoustic transducers with possibility of their arrangement in form of matrix or line.

EFFECT: expansion of the device functional capabilities.

9 cl, 3 dwg