Subsurface monitoring and borehole placement using a modified tubular equipped with tilted or transverse magnetic dipoles
US6727705B2 · kind B2 · utility
16Cited by
11References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2001 |
| Grant date | Apr 27, 2004 |
| Priority date | — |
| Expiry date | Feb 1, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/30
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Systems and methods for monitoring a subsurface formation property and for placing a borehole in the vicinity of a well in the formation. A slotted tubular is utilized to provide through-tubular signal transmission and/or reception using an antenna adapted to generate a magnetic dipole moment with a transverse or controllable orientation. Hydraulic isolation between the interior and exterior of the tubular at the slot is provided by a pressure barrier. The tubular also forms part of a system for accurately placing a well within a desired distance and orientation relative to an existing well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.