E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 47/12 (2006.01)
Patent
CA 2618120
Self-detection of a modulating carrier and an optimum carrier in a downhole telemetry system. A method of detecting a carrier frequency in a downhole wireless telemetry system includes the steps of: transmitting from a first telemetry device a message modulated on a predetermined carrier frequency; receiving at a second telemetry device signals including multiple frequencies; and selecting from among the multiple received frequencies the predetermined carrier frequency on which the message is modulated. A method of detecting a usable downhole wireless telemetry system carrier frequency includes the steps of: transmitting from a first telemetry device a message modulated on a carrier frequency; then checking whether a response to the message is received at the first telemetry device from a second telemetry device; and each time the response is not received, repeating the transmitting and checking steps with an incremented carrier frequency.
Fink Kevin D.
Kyle Donald G.
Halliburton Energy Services Inc.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
LandOfFree
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