A SYSTEM AND METHODS FOR DETECTING PRESSURE SIGNALS GENERATED BY A DOWNHOLE ACTUATOR

摘要

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.