| 摘要 |
A wellbore communication system (1) comprises a downhole tool (2) having a downhole transmitter (40), a sensing element (22, 122, 222, . . . , 1022) located at surface and coupled to a surface receiver (44), and an insulated slickline (6, 106, 206, . . . , 1006) having an electrically conductive core surrounded by an insulating coating. The slickline is attached to the downhole tool and coupled to the downhole transmitter. The sensing element is capacitively coupled to the slickline so as to permit movement of the slickline relative thereto and so as to an electric field to extend from the core of the slickline through the insulating coating to the sensing element for transmission of information from the downhole transmitter to the surface receiver via the slickline and the sensing element. |
