Methods for making directional resistivity measurements
US8159227B2 · kind B2 · utility
17Cited by
37References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 11, 2009 |
| Grant date | Apr 17, 2012 |
| Priority date | — |
| Expiry date | Apr 7, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
One exemplary embodiment of a method for making directional resistivity measurements includes transmitting an axial electromagnetic wave in a borehole and receiving substantially pure axial and transverse components of the wave. A ratio of the axial and transverse components is computed and may be utilized as an indicator of various formation parameters. The invention advantageously enables the moment of the transmitting antenna to be canceled and therefore can result in improved accuracy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.