Measuring and testing – Borehole or drilling – Downhole test
Patent
1989-02-22
1990-08-07
Chapman, John
Measuring and testing
Borehole or drilling
Downhole test
166250, 175 40, 340853, 367 81, E21B 4712
Patent
active
049457616
ABSTRACT:
A device and method for transferring data between a bottom of a well and a surface, wherein a transfer of data is provided either by a mud wave generator or by a cable simultaneously or successively.
REFERENCES:
patent: 4324297 (1982-04-01), Denison
patent: 4788545 (1988-11-01), Farque
patent: 4806928 (1989-02-01), Veneruso
McDonald et al., "Borehole Telemetry . . . Measurements", Oil and Gas Journal, Sep. 15, 1975, pp. 111-118.
Lessi Jacques
Morin Pierre
Chapman John
Institut Francais du Pe'trole
O'Shea Kevin D.
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