Dynamic downhole recorder

Details Dynamic downhole recorder Dynamic downhole recorder

G - Physics

01

V

324/8

G01V 3/34 (2006.01) G01D 9/00 (2006.01) G01V 11/00 (2006.01)

Patent

CA 1228645

ABSTRACT OF THE DISCLOSURE A method and apparatus allows dynamic data to be recorded in a drill string for later playback at the surface. The system includes a transducer located in a sub in the drill string which provides electrical response to a analog to digital converter. A timer circuit provides timer pulses to the converter to cause the response to be converted into a digital value for storing in a recorder. The timer pulses are also used to address the memory location. The timer circuit has the ability to provide a variable number of timer pulses at a variable frequency and at variable intervals. A surface timer circuit provides simultaneous timer pulses to a counter to indicate at the surface which memory location is being filled at any given time.

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