Apparatus for transmitting data from a borehole to the surface o

Details Apparatus for transmitting data from a borehole to the surface o Apparatus for transmitting data from a borehole to the surface o

1982-03-25

1985-02-12

Moskowitz, Nelson

Communications, electrical: acoustic wave systems and devices

Wellbore telemetering

Through well fluids

175 48, G01V 140

Patent

active

044995636

ABSTRACT:
An apparatus for the remote transmission of information from a borehole (1) to the surface of the earth is disposed in a drilling pipe string (4) of a drilling device. The drilling device further comprises a rotary drill bit (3) and a pump (5) which pumps the flushing liquid (6) downwards in the flow passage (11) of the drilling pipe string, through the rotary drill bit (3) and upwards in an annular space (7) surrounding the pipe string. The apparatus has devices for ascertaining information data (8), for converting the information data into electrical control signals (9) and for producing pressure pulses (10) in the downwardly directed flow of the flushing liquid (6). The devices are disposed in a chamber (13) which is bounded internally by the flow passage (11) and externally by an outer tube (12).

REFERENCES:
patent: 2898084 (1959-08-01), Eckel et al.
patent: 3004613 (1961-10-01), Murphey
patent: 4078620 (1978-03-01), Westlake et al.

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