Method and apparatus enhanced acoustic mud pulse telemetry

摘要

A method and system for telemetry through a drilling fluid during drilling is disclosed. A reflector ( 110 ) is positioned downstream from the drilling mud pumps ( 80 ) and causes reflected pressure waves having the same pressure polarity as incident pressure waves traveling upwards. At least one pressure sensor ( 92 ) is positioned below the reflector ( 110 ) to sense pressure in the drilling fluid. The reflector can be a fixed orifice plate or an adjustable aperture.