Well information telemetry by variation of mud flow rate

Details Well information telemetry by variation of mud flow rate Well information telemetry by variation of mud flow rate

1986-08-11

1987-09-15

Moskowitz, Nelson

Communications, electrical: acoustic wave systems and devices

Wellbore telemetering

Through well fluids

175 48, G01V 140

Patent

active

046944397

ABSTRACT:
Information is conveyed from downhole location within a well, by varying the rate of flow of drilling fluid at the downhole location in accordance with changes in a predetermined condition at that location, and then sensing variations in the rate of flow of the drilling fluid at the surface of the earth as an indication of the downhole information being transmitted. A readout unit can be actuated in accordance with the information sensed at the surface of the earth to give a visual indication or other output representative of or dependent upon the downhole information.

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