Method and device for surface-borehole transient electromagnetic detection
US11187824B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2018 |
| Grant date | Nov 30, 2021 |
| Priority date | — |
| Expiry date | Mar 7, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/38
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The disclosure pertains to the field of exploration based on electromagnetic method, and in particular relates to a method and device for surface-borehole transient electromagnetic detection, aiming at solving the problem that the loop source device cannot effectively detect the high-resistance layer. The device according to the disclosure includes grounded conductor wires as emission sources and underground receiving devices as receiving sources; wherein the grounded conductor wires are arranged on the ground; an existing borehole on the ground or an existing underground roadway is used, and receiving probes are arranged point by point in the borehole direction or in the horizontal direction of the roadway; the grounded conductor wires are composed of three sets of grounded conductor wires, wherein two sets of the grounded conductor wires are arranged in parallel with each other and perpendicular to the third set of the grounded conductor wires.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.