Precision marking of subsurface locations
US8646520B2 · kind B2 · utility
14Cited by
20References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 15, 2011 |
| Grant date | Feb 11, 2014 |
| Priority date | — |
| Expiry date | Dec 28, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/445
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for performing a downhole operation includes marking at least one location in a wellbore using a magnetized material. The magnetized material may generate a magnetic field stronger than a magnetic field generated in the wellbore by a surrounding formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.