| 摘要 |
A well installation communication system comprising downhole metallic structure (2), a downhole communication unit (3), and a surface communication unit (4) arranged for electrical signal communication with the downhole communication unit via a signal channel. The signal channel comprises a portion of the downhole metallic structure (2), a portion of cable (5) running within the downhole metallic structure away from said portion of the downhole metallic structure towards the surface and a connection device (6). The connection device (6) is in the signal channel between the portion of metallic structure (2) and the portion of cable (5). The connection device is removeably deployed in the metallic structure, is electrically disconnectably and reconnectably connected to the metallic structure and has a connector portion to which an end of the cable is mechanically and electrically connected. |
