Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1987-10-05
1989-08-08
Britton, Howard W.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358 99, 358107, 358 86, 367 25, 367 69, H04N 718, H04N 710
Patent
active
048558206
ABSTRACT:
An apparatus and method of visually examining the sidewalls of a bore hole include a down hole video tool lowered into the bore hole by means of a cable and winch on the surface. The apparatus includes a wide angle video camera at its lower section. An upper section houses a power supply/triplexer, a telemetry board, an FM modulator video amplifier transmission board, gyroscope data interface board, and a gyroscope for showing the directional orientation of the camera and apparatus in the bore hole. The gyroscope orientation and the visual image of the portion of the sidewall viewed is transmitted to a video display monitor in an equipment van on the surface. The image on the screen includes a directional reference point so that the direction of a portion of the sidewall being viewed can be ascertained. The camera images are recorded by a video cassette recorder for a permanent record of the visualization of the entire length of the bore hole. Various geological data can be extrapolated by this visualization by means of the observed fracturing and stratification which may be observed in a given bore hole. Additionally, the probe can be used to inspect bore holes previously encased by steel tubing to detect any leaks or other deterioration in the tubing system.
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Britton Howard W.
Peng John K.
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