Reverse Semi-Airborne Electromagnetic Prospecting

摘要

Method for semi-airborne electromagnetic prospecting for hydrocarbons or other fluids or minerals. In the method, electromagnetic receivers are deployed on the Earth's surface over a subsurface region (71). An airborne electromagnetic transmitter is flown over the receivers (72) and the receivers record at least one component of electromagnetic field data excited by the transmitter (73). The recorded electromagnetic data are analyzed for subsurface resistivity (74), and the resistivity is interpreted for evidence of hydrocarbons or other fluids or minerals (75). Compared to traditional fully airborne surveys, the advantages of the method include better signal-to-noise, and data for multiple source-receiver offsets.

主权项

1. A method for semi-airborne electromagnetic prospecting for fluids or minerals, comprising:
deploying a plurality of electromagnetic receivers on the Earth's surface over a subsurface region; energizing an airborne electromagnetic transmitter in a vicinity above the receivers; recording at least one component of electromagnetic field data excited by the transmitter in the receivers; analyzing the recorded data for subsurface resistivity; and interpreting the resistivity for evidence of fluids or minerals.