Methods and apparatus for reducing electromagnetic signal noise
US7243028B2 · kind B2 · utility
30Cited by
55References
48Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 14, 2005 |
| Grant date | Jul 10, 2007 |
| Priority date | — |
| Expiry date | Jun 14, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V11/002
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention generally provides methods and apparatus for reducing noise in a detected electromagnetic wave used to telemeter data during a wellbore operation. In one embodiment, two surface antennae are placed on opposite sides of the wellbore and at the same distance from the wellbore. The signals from the two antennae are summed to reduce the noise in the electromagnetic signal transmitted from the electromagnetic downhole tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.