Electricity: measuring and testing – Of geophysical surface or subsurface in situ
Patent
1984-12-06
1985-12-24
Strecker, Gerard R.
Electricity: measuring and testing
Of geophysical surface or subsurface in situ
73151, 166250, 166297, 175 40, 324221, 324346, G01V 318, E21B 2902, E21B 4700, E21B 47022
Patent
active
045609349
ABSTRACT:
Bore hole instrument and methods of manufacturing and using the same. The instrument includes an elongated flexible probe which is inserted into a bore hole and can travel freely around bends of relatively short radius in the hole. The probe includes a plurality of sensors, explosive charges or the like which are spaced apart and embedded in a flexible body comprising a mass of cushioning material, with a flexible outer casing of fabric having a high tensile strength. The probe is driven into a bore hole in piston-like fashion, and the flexible body enables the probe to travel freely around bends of relatively short radius. Instrumentation for processing signals from the probe is located at the surface of the earth, and a flexible cable interconnects the instrumentation with the probe.
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