Apparatus and method to communicate bidirectional...

Details Apparatus and method to communicate bidirectional... Apparatus and method to communicate bidirectional...

E - Fixed Constructions

21

B

324/8

E21B 47/12 (2006.01) E21B 47/022 (2006.01)

Patent

CA 1231134

APPARATUS AND METHOD TO COMMUNICATE BIDIRECTIONAL INFORMATION IN A BOREHOLE ABSTRACT OF THE DISCLOSURE The invention relates generally to mapping or survey apparatus and methods, and more particularly concerns efficient transmission of survey signals or data from depth level in a borehole or well to the well surface, for analysis, display or recordation; further it concerns efficient transmission of command data from a surface computer unit to the survey tool at depth level in a borehole or well for control of instrumentation operating modes, operating characteristics, or diagnostic purposes; and further it concerns supply of DC power downwardly to the instrumentation via a wireline by which such command signal and survey data or signals may be transmitted upwardly or downwardly respectively. -1-

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