Replaceable antennas for subsurface monitoring apparatus
US6788263B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2002 |
| Grant date | Sep 7, 2004 |
| Priority date | — |
| Expiry date | Nov 29, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/01
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An antenna structure is separately and independently formed with respect to a tubular adapted for long-term disposal within a wellbore. The antenna is adapted for easy and rapid deployment on the tubular. An independently formed ‘partial ring section’ (or arcuate shaped member) contains an antenna coil. In one embodiment, one or more of the independently formed partial ring sections is placed on the exterior of the tubular to form a well completion. In another embodiment, a plurality of partial ring sections are coupled to a spooled cable for rapid deployment of the antennas onto a tubular in the field. Another embodiment includes partial ring sections forming an antenna with multiple coils of differing orientation to provide directional sensitivity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.