Downhole detection system

摘要

The present invention relates to a downhole detection system for monitoring the expansion of one or more annular barriers. The downhole detection system (100) comprises a plurality of detection devices (20) adapted to be provided in connection with one or more annular barriers (1) for detecting a condition of expansion of the annular barrier in an annulus (2) between a well tubular structure (3) and an inside wall (4) of a borehole (5), and for generating signals or data representative thereof. The detection device(s) is/are connected via wiring (66) to an electrical connection means (65) adapted to be arranged in a side pocket (32) provided in the well tubular structure. Furthermore, the downhole detection system comprises a data collection unit (60) adapted to be left in the side pocket and to be connected to the plurality of downhole detection devices via the electrical connection means whereby signals from the plurality of detection devices are recorded by the data collection unit.