Abstract: A well production system comprises a safety instrumented system (SIS) having one or more logic solvers; one or more pressure transmitters disposed along a flowpath and communicatively coupled to the one or more logic solvers; one or more valves disposed along the flowpath and communicatively coupled to the SIS, wherein the SIS is configured to selectively actuate the one or more valves based on feedback from the one or more pressure transmitters; and a spare pressure transmitter disposed along the flowpath, wherein the spare pressure transmitter is configured to be selectively coupled to the one or more logic solvers.

Abstract: A well production system comprises a safety instrumented system (SIS) having one or more logic solvers; one or more pressure transmitters disposed along a flowpath and communicatively coupled to the one or more logic solvers; one or more valves disposed along the flowpath and communicatively coupled to the SIS, wherein the SIS is configured to selectively actuate the one or more valves based on feedback from the one or more pressure transmitters; and a spare pressure transmitter disposed along the flowpath, wherein the spare pressure transmitter is configured to be selectively coupled to the one or more logic solvers.

Abstract: A well production system comprises a barrier providing a pressure barrier between components of the well production system located upstream of the barrier and components of the well production system located downstream of the barrier; a safety instrumented system (SIS) communicatively coupled to the barrier and having one or more logic solvers; one or more pressure transmitters disposed along a flowpath, within the barrier, and communicatively coupled to the one or more logic solvers; one or more valves disposed along the flowpath within the barrier and communicatively coupled to the SIS, wherein the SIS is configured to selectively actuate the one or more valves based on feedback from the one or more pressure transmitters; a spare pressure transmitter disposed along the flowpath within the barrier; and a monitoring device, wherein the monitoring device is configured to selectively couple the spare pressure transmitter to the one or more logic solver.

Abstract: A well production system comprises a barrier providing a pressure barrier between components of the well production system located upstream of the barrier and components of the well production system located downstream of the barrier; a safety instrumented system (SIS) communicatively coupled to the barrier and having one or more logic solvers; one or more pressure transmitters disposed along a flowpath, within the barrier, and communicatively coupled to the one or more logic solvers; one or more valves disposed along the flowpath within the barrier and communicatively coupled to the SIS, wherein the SIS is configured to selectively actuate the one or more valves based on feedback from the one or more pressure transmitters; a spare pressure transmitter disposed along the flowpath within the barrier; and a monitoring device, wherein the monitoring device is configured to selectively couple the spare pressure transmitter to the one or more logic solver.

Abstract: An apparatus for use in providing an intervention workover control system for an underwater well, comprising a first structure for connecting to a hydraulic flying lead, a first support for supporting at least one electrical flying lead, a second support for supporting the hydraulic flying lead, a second structure, a third structure, and a third support for supporting the at least one electrical flying lead, the second and third structures can be connected to respective ones of opposite sides of the first structure. The structures are configured to provide an intervention workover control system of a first configuration, wherein the first structure is usable with the second and third structures connected to the first structure, and to provide an intervention workover control system of a second configuration, wherein the first structure is usable without the second and third structures connected to the first structure.

Abstract: A hydraulic accumulator assembly in which a hydraulic accumulator is associated with at least one responsive unit, which is responsive to the weight of the accumulator to provide an indication dependent on the weight of the accumulator. The accumulator is in an underwater fluid extraction well facility.

Abstract: A hydraulic accumulator assembly in which a hydraulic accumulator is associated with at least one responsive unit, which is responsive to the weight of the accumulator to provide an indication dependent on the weight of the accumulator. The accumulator is in an underwater fluid extraction well facility.

Abstract: An apparatus for use in providing an intervention workover control system for an underwater well, comprising a first structure for connecting to a hydraulic flying lead, a first support for supporting at least one electrical flying lead, a second support for supporting the hydraulic flying lead, a second structure, a third structure, and a third support for supporting the at least one electrical flying lead, the second and third structures can be connected to respective ones of opposite sides of the first structure. The structures are configured to provide an intervention workover control system of a first configuration, wherein the first structure is usable with the second and third structures connected to the first structure, and to provide an intervention workover control system of a second configuration, wherein the first structure is usable without the second and third structures connected to the first structure.