Method and means for transmitting data through a drill string in

Details Method and means for transmitting data through a drill string in Method and means for transmitting data through a drill string in

1982-09-28

1985-12-31

Moskowitz, Nelson

Communications, electrical: acoustic wave systems and devices

Wellbore telemetering

Through well fluids

367911, 175 40, G01V 140

Patent

active

045625603

ABSTRACT:
Data are transmitted through a column of drilling mud in a drill string that is being used in drilling a borehole in an underground formation. The data are in the form of pressure waves (such as pressure pulses) and are generated by means of a downhole mud motor that is driven by the drilling mud. The pressure waves are generated by varying the load on the mud motor according to a predetermined pattern that is representative of the data to be transmitted.

REFERENCES:
patent: Re30246 (1980-04-01), Richter, Jr. et al.
patent: 2250912 (1941-07-01), Hudson et al.
patent: 3112801 (1963-12-01), Clark et al.
patent: 3693428 (1972-09-01), LePeuvedic et al.
patent: 4078620 (1978-03-01), Westlake et al.
patent: 4351037 (1982-09-01), Scherbatskoy
patent: 4462469 (1984-07-01), Brown
1984-85 Composite Catalog of Oil Field Equipment & Services, "Directional Drilling Equipment", Posi-Drill, published by World Oil, pp. 11-12.

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