Device and method for data communication through metal

摘要

A method, device and system to pass signals through a metal substrate includes transmission of at least one ultrasonic signal from a transmitter (20) through a metal substrate (16) from a transmission means (30) attached directly or indirectly to a surface of a first side of the metal substrate, and receiving the signals at a receiver (20) releasably connected to a surface at a second surface or side of the metal substrate. The metal substrate can be part of a metal enclosure (12), such as of a data communication module (10) arranged to be put down a borehole. The device may clamp using jaws (36a,36b) and may include a visual display (36). A remote communicator (39) may communicate with the device, such as via an infra red sensor (38). The device, system and method can be used to communicate data through the metal wall of a downhole information tool, such as a survey or core orientation instrument package.