Communications – electrical: acoustic wave systems and devices – Wellbore telemetering – Through well fluids
Patent
1987-07-27
1988-09-27
Tarcza, Thomas H.
Communications, electrical: acoustic wave systems and devices
Wellbore telemetering
Through well fluids
175 48, G01V 140
Patent
active
047746947
ABSTRACT:
Information is conveyed from a 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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Haefliger William W.
Lobo Ian J.
Scientific Drilling International
Tarcza Thomas H.
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