Casing data relay

摘要

A casing data relay for use in an environment including a casing (82,84) in a borehole (40), a first controller (116) for positioning in the borehole, and surface equipment (94) for communicating with the first controller (116), comprises a second controller (102) for positioning in the borehole and for relaying at least a portion of the communications between the surface equipment (94) and the first controller (116).
The relay may further comprise a third controller (100) for relaying at least a portion of the communications among two or more of the surface equipment (94), the second controller (102) and the first controller (116).