Autonomous depth control for wellbore equipment

Details Autonomous depth control for wellbore equipment Autonomous depth control for wellbore equipment

2011-04-26

2011-04-26

Keith, Jack (Department: 3663)

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Well logging

C702S006000

Reexamination Certificate

active

07933166

ABSTRACT:
A method for tracking a wellbore tool includes: obtaining a first image of the wellbore using an imager associated with the tool; obtaining a second image of the wellbore using the imager after a selected time period; matching the first image with the second image by shifting one of the first and second images; determining an amount of the shifting; and comparing the amount of the shifting with a reference distance to determine a distance of tool movement. A method for tracking a wellbore tool includes: obtaining an image of a wellbore feature using a first imager associated with the tool; moving the tool in the wellbore; and registering a distance of tool movement when the image of the wellbore feature is detected by a second imager spaced apart from the first imager, wherein the distance of tool movement equals a spacing between the first and second imagers.

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