G - Physics – 08 – C
Patent
G - Physics
08
C
255/1, 73/45
G08C 23/00 (2006.01) E21B 4/02 (2006.01) E21B 47/18 (2006.01)
Patent
CA 1235313
ABSTRACT In a device for the transmission of information from a borehole to the surface during the operation of a drilling device which comprises a rotary drill bit, a tubular housing and a pump which delivers a drilling flu- id downwards through the tubular housing, through the rotary drill bit and upwards in the annular space between the tubular housing and the borehole, there is provided a detector arranged in the tubular housing, for detecting information, a processor for converting that information into a sequence of electrical control signals and a transducer for generating pressure pulses in the down- wardly-directed flow of drilling fluid as a function of the control signals, and a remote detector arranged at a position spaced from the processor by a wire-less trans- mission path with a transmitter unit associated with the remote detector at one end of said path and a receiver unit at the other end of said path.
487273
Hense Ulrich
Kruger Volker
Eastman Christensen Company
Gowling Lafleur Henderson Llp
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