Borehole monitoring device and method

Communications – electrical: acoustic wave systems and devices – Wellbore telemetering – Through drill string or casing

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175 40, 175 62, 181102, 340861, H04H 900, E21D 1000, G01V 100

Patent

active

045970670

ABSTRACT:
A method and device for sensing hole parameters while drilling a borehole, and transmitting the sensed data to a remote receiver. Data are transmitted in digital format as a series of audible binary pulses generated by a solenoid acoustically coupled to the drill pipe. In a preferred embodiment, data transmission occurs automatically during periods of drilling inactivity.

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Journal of Petroleum Technology, Oct. 1983, pp. 1792-1796, Kamp, "Downhole Telemetry from the User's Point of View".

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