| 摘要 |
The present invention makes use of the discovery of the fact that producing or potentially producing oil and/or gas fields usually have associated therewith at the earth's surface, the presence of escaping or permeating gases which have risen from underground stratigraphic and structural traps from which oil and/or natural gases may be recovered through drilled wells. Detection of the permeating gases is accomplished by focusing a beam of microwave radiation of known predetermined parameters thereupon, from remote locations, and measuring the parameters of the returned "reflected" microwave signals i.e., signals which are re-radiated by the hydrocarbons at the surface. Comparison of the frequency shift, and other parameters of the returned signal with the parameters of the transmitted microwave signal and correlation of the modified parameters of the returned wave with predetermined "microwave re-radiation characteristics" (MRC) of known gases will enable an immediate qualitative identification of a detected gas to be made and will enable an approximation of the quantitative concentrations of the detected gas to be made. Furthermore, by employing conventional navigational and cartographic procedures in association with the gas detecting practices of the present invention, it is possible to use ground vehicles and aircraft to explore, to prospect for, and to map gas and/or oil producing fields.
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