A system and methods for detecting pressure signals...

Details A system and methods for detecting pressure signals... A system and methods for detecting pressure signals...

E - Fixed Constructions

21

B

E21B 47/18 (2006.01) E21B 47/06 (2006.01)

Patent

CA 2395098

A system is presented for detecting downhole generated telemetry pressure pulses in a well. The system employs high sensitivity dynamic pressure sensors such as hydrophones for detecting the pulses in either the surface drilling fluid supply line or in the fluid return annulus. The high sensitivity allows detection of smaller surface pulses than standard transducers. In one embodiment, an annular pulser is used to generate pulses directly in the annulus.

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