FIELD: oil and gas production.
SUBSTANCE: method includes obtaining the first image of well with the use of image-forming apparatus connected to the instrument, obtaining the second image of well with the use of image-forming apparatus after the chosen period of time is over, confirmation of the first image with the second one by shifting the first or the second image, determination of shift value and comparison of shift value with support distance for determination of instrument shift distance.
EFFECT: increase of depth measurement accuracy and control of down-hole equipment at exact depth during down-hole operations.
17 cl, 6 dwg
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