METHOD AND APPARATUS FOR DATA TRANSMISSION IN A WELL BORE CONTAINING A CONDUCTIVE FLUID

摘要

Method and means for recovery of data signals representing a parameter from down hole to the top of a well bore (20a). The well bore has a conductive fluid (54, 60) and the data signals represent a parameter down hole in the well bore. An exposed electrode receiver (34) is lowered in the well bore suspended from a flexible line (36) while the line extends to the top of the well bore. Electrical potentials representing the parameter are received by the receiver from the conductive fluid. Data signals representing the parameter represented by the received potentials are passed over the flexible line to the top of the well bore.