Electric prospecting of the subsoil with lineal electrodes
US4321540A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 1978 |
| Grant date | Mar 23, 1982 |
| Priority date | — |
| Expiry date | Aug 22, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention concerns electrical prospecting of the subsoil. According to the invention, electrical prospecting is performed with either continuous or alternating current by using a drilling tubing as at leasts one of two lineal exciter electrodes. The profile of apparent resistivity thus obtained gives a very definite indication of the presence of deep anomalies, even those situated under high resistivity layers or masks, which is frequently the case in the search for deposits. Comparing the real resistivity profile with the theoretical curve obtained from a preliminary model, the extent of the deposit can be determined. The invention applies principally to petroleum, mineral or geothermal exploration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.