Apparatus for multisensor electromagnetic defectoscopy and integrity monitoring of well casings

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United States of America Patent

PATENT NO 11867662
SERIAL NO

17297698

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Abstract

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The apparatus is useful for monitoring integrity of casings, tubings, and other tubular strings in oil and gas wells. An apparatus for defectoscopy of downhole casings includes several units in a housing. An electromagnetic field generation unit generates excitation pulse of a specified amplitude and duration. It includes an exciter coil containing a core made a high magnetic permeability material. A pick-up sensor unit includes an integral pick-up coil and radial pick-up coils mounted around the exciter coil winding. Each pick-up coil has a U-shaped core with poles directed perpendicularly to the surveyed pipe surface and having a center line parallel to the center line of the exciter coil winding. A data control, acquisition, and processing unit includes operational amplifiers with variable amplification factors and analog-to-digital converters (ADCs) that transmit signals from the pick-up coils to software for casing defect analysis.

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Patent Owner(s)

  • TGT DMCC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Arbuzov, Andrey Alexandrovich Kazan, RU 1 0
Davydov, Dmitry Alexandrovich Kazan, RU 1 0
Pyatnitsky, Dmitry Yurievich Saratov, RU 1 0
Vdovin, Alexey Yurievich Astrakhan, RU 2 4

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