Passive geophysical survey method based upon the detection of the DC component of the vertical electrical potential of natural earth currents
US4945310A · kind A · utility
8Cited by
17References
6Claims
0Family size
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Key dates
| Filing date | Jun 16, 1989 |
| Grant date | Jul 31, 1990 |
| Priority date | — |
| Expiry date | Jun 16, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/082
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A geophysical prospecting method of measuring potentials existing in the air in the area of the lower atmosphere between about one and ten meters above the surface of the earth in order to detect petroleum accumulations and mineral deposits below the surface of the earth. The method mounts a detector device is mounted on the front bumper of an off-the-road vehicle and moves the vehicle across the surface of a given area of earth in a more or less continuous fashion. Changes in the electron flow through the ion field at the surface of the earth to increased and decreased resistivity values in the crust of the earth are recorded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.