Abstract: A system for monitoring and/or controlling at least one device mounted on a tubing string of a well, the system comprising: a down-well cable for conveying a signal to and/or from at least one device mounted on a tubing string of a well; a temporary surface cable for conveying a signal between the at least one device and a first monitor/control station prior to and/or during installation of a tubing string in a well; a permanent surface cable for conveying a signal between the at least one device and a second monitor/control station after installation of the tubing string in a well; and switch means configurable between a first configuration, in which the down-well cable and the temporary cable are connected, and a second configuration, in which the down-well cable and the permanent cable are connected.

Abstract: An electrical penetrator connector has a fixed coupler pin unit which incorporates a pin having a conductive element. A reciprocatable component includes a housing defining a bore into which the pin may be inserted. Within the bore is a retractable shuttle pin. A chamber contains dielectric fluid. A flow path for the dielectric fluid is configured to move the fluid past a contact in the bore which is to touch the contact on the pin. The dielectric fluid circulates round the flow path every time the pin is inserted into the bore.

Abstract: An electrical penetrator connector has a fixed coupler pin unit which incorporates a pin having a conductive element. A reciprocatable component includes a housing defining a bore into which the pin may be inserted. Within the bore is a retractable shuttle pin. A chamber contains dielectric fluid. A flow path for the dielectric fluid is configured to move the fluid past a contact in the bore which is to touch the contact on the pin. The dielectric fluid circulates round the flow path every time the pin is inserted into the bore.