Method for constructing vertical images of anomalies in geologic

Details Method for constructing vertical images of anomalies in geologic Method for constructing vertical images of anomalies in geologic

1986-06-16

1988-05-03

Strecker, Gerard R.

Electricity: measuring and testing

Of geophysical surface or subsurface in situ

With radiant energy or nonconductive-type transmitter

324338, G01V 312, G01V 330, G01V 338

Patent

active

047423056

ABSTRACT:
Apparatus and method for detecting geological anomalies occuring in geological formations. The instrumentation comprises a medium frequency continuous wave narrowband FM transmitter and receiver pair. Two instrument configurations are downhole instruments for insertion into boreholes. Survey procedures are provided to detect anomalies through signal attenuation, path attenuation and signal phase shift. Continuity measurements at different depths in the drillholes provide data to determine the existence of anomalies. Tomographic techniques are employed to provide a visual image of the anomaly. Computer aided reconstruction techniques provide such visual images from the generated data.

REFERENCES:
patent: 2183565 (1939-12-01), Hawley
patent: 2268106 (1941-12-01), Blau
patent: 2575340 (1951-11-01), Goldstein
patent: 4161687 (1979-07-01), Lytle et al.
patent: 4577153 (1986-03-01), Stolarczyk

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