Autonomous depth control for wellbore equipment
US7933166B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 9, 2007 |
| Grant date | Apr 26, 2011 |
| Priority date | — |
| Expiry date | Dec 7, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/7515
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.