Borehole televiewer system depth encoding and decoding method
AssigneeAtlantic Richfield Company
InventorsDonald G. Kyle, William P. Goodwill
Life of this patent
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Abstract
A method and an apparatus for recording the depth of a well logging apparatus is provided. The method and apparatus include the direct acquisition of broad depth information from the logging system conversion of the broad depth information to an acceptable digital signal and recording that signal on the audio track of a video cassette recorder. A microcontroller is used to convert broad depth information from either the logging system or the video cassette recorder (in the playback mode) to actual depth and depth rate for use by other displays and plotters.
Claims12
A method for continuously recording corresponding depth information synchronously with the data from a well logging system, comprising:
- (a) providing a data signal having a synchronizing pulse;
- (b) providing a depth signal having the same synchronizing pulse;
- (c) recording said data signal on a video channel of a video recorder;
- and
- (d) recording said depth signal and the synchronizing pulse on a single audio channel of the same recorder after a predetermined time-delay following occurrence of the synchronizing pulse.
A method for recording data and depth signals for a well logging system on a video cassette recorder, comprising:
- (a) recording a data signal corresponding to a given depth on a video channel of a recorder;
- (b) recording a synchronizing pulse corresponding to a predetermined azimuthal location on a first audio channel;
- and
- (c) recording a depth signal corresponding to a depth to which the data signal corresponds on the first audio channel after a predetermined time-delay following occurrence of the synchronizing pulse.
A method for recording data and depth signals for a well logging system on a video cassette recorder including recording a data signal corresponding to a given depth on a video channel of a recorder and recording a synchronizing pulse corresponding to a predetermined azimuthal location and time on a first audio channel wherein the improvement comprises:
- recording a digital depth signal to which the data signal corresponds after a predetermined time-delay following occurrence of the synchronizing pulse on the first audio channel thereby allowing he use of other channels of the video cassette recorder to be used for recording additional data.
Dependencies are inferred from the claim text.