Abstract: A system for recirculating a portion of a liquid fraction of multiphase production fluid to a pump for enhanced functionality thereof. The system includes a splitter assembly that obtains the multiphase production fluid from the pump. The splitter assembly utilizes multiple internal chambers to separate gas and liquid fractions of the fluid. A portion of the liquid fraction may then be recirculated back to the pump as indicated whereas the remainder of the liquid fraction may be recombined with the gas fraction for production.

Abstract: An apparatus includes a flowline connector having an inboard pipe and an outboard assembly. The outboard assembly includes a frame and an outboard pipe moveable within the frame to allow the outboard pipe to be moved toward the inboard pipe. The outboard assembly also includes a profile pipe in which the outboard pipe is received, and the profile pipe and the outboard pipe are connected to move together. The profile pipe includes at least one guide to change pitch or yaw of the outboard pipe to direct the outboard pipe toward alignment with the inboard pipe as the outboard pipe is moved within the frame toward the inboard pipe. Additional systems, devices, and methods are also disclosed.

Abstract: A contra-rotating compressor includes a first shaft assembly disposed in a housing, the first shaft assembly including an outer shaft, and a first plurality of impellers coupled to the outer shaft, wherein the outer shaft includes a final stage that includes a final impeller of the first plurality of impellers. The compressor further includes a second shaft assembly disposed in the housing and rotatable about the longitudinal axis that has a second plurality of impellers, a first pair of annular seals between the final stage and an inner surface of the housing that are configured to permit relative rotation between the final stage and the housing, and a third annular seal positioned between the outer surface of the final stage and an inner surface of the second shaft assembly that is configured to permit contra-rotation between the final stage and the second shaft assembly.

Abstract: A subsea valve system for use in a subsea landing string includes a subsea valve and an external manifold in fluid communication with the subsea valve. The external manifold includes a cylinder, a split manifold piston, an above bore inlet that is configured to be exposed to an above bore pressure, a below bore inlet that is configured to be exposed to a below bore pressure, and an open chamber outlet. The split manifold piston is configured to move within the cylinder to fluidly couple the above bore inlet to the open chamber outlet to enable pump through functionality while a respective force exerted on the manifold piston by the above bore pressure is greater than a respective force exerted on the manifold piston by the below bore pressure.

Abstract: A technique utilizes spatially resolved temperature measurements to infer the temperature of a subsea infrastructure. According to an embodiment, temperature data, e.g. a temperature map, is determined for the subsea infrastructure and comprises performing remote temperature measurements of water surrounding the subsea infrastructure. Additionally, a metrological scan of the subsea structure may be obtained. Furthermore, a simulation or simulations may be run for an assumed temperature profile along a surface of the subsea infrastructure. The data obtained from the remote temperature measurements, the metrological scan, and the simulation is processed to determine a temperature profile of the subsea infrastructure. This temperature profile can then be used to facilitate a variety of subsea infrastructure management decisions.

Abstract: A technique facilitates movement of fluids with reduced component loading by utilizing opposed axial forces. The system for moving fluid may be in the form of a gas compressor, liquid pump, or other device able to pump or otherwise move fluid from one location to another. According to an embodiment, the system includes rotor sections which are combined with pumping features. The rotor sections are disposed radially between corresponding inner and outer stator sections which may be powered to cause relative rotation of inner and outer rotor sections in opposite directions. The rotors and corresponding pumping features are configured to move fluid in opposed axial directions toward an outlet section so as to balance axial forces and thus reduce component loading, e.g. thrust bearing loading.

Abstract: A subsea umbilical termination assembly comprising a base (1), said base (1) includes a core frame construction (2) with elongated sides (3, 4) onto which support plates (5, 6, 7) are mounted, wherein at least a pair of mounting rails (12, 13) are respectively secured to the core frame construction (2) along elongated sides (3, 4) and said mounting rails (12, 13) are provided with positioning elements (16, 17) to allow a modular support plate arrangement, which is fixed to the mounting rails (12, 13).

Abstract: A technique facilitates movement of fluids while reducing axial loading on system components such as thrust bearings. The technique utilizes a system, e.g. a compressor, for moving fluid via counter rotating rotors. By way of example, the rotors may utilize impellers for establishing opposed fluid flows along fluid movement sections. The fluid movement sections may be arranged in a back-to-back configuration such that counter rotation of the rotors causes the impellers to move fluid flows in opposed directions, thus reducing axial loading. The opposed fluid flows ultimately are redirected to an outlet.

Abstract: A method includes landing a conductor housing on a wellbay. The method also includes engaging a first alignment feature on the wellbay with an orientation feature on the conductor housing. The method also includes engaging an alignment pin on the conductor housing with a wellhead housing. The wellhead housing includes a second alignment feature. The method further includes landing a tubing hanger alignment gasket using the second alignment feature of the wellhead housing. The tubing hanger alignment gasket provides orientation for a tubing hanger as the tubing hanger is landed through a blow-out preventer.

Abstract: A method, subsea device, and system, of which the method includes acquiring data using one or more sensors of the subsea device, the data representing a subsea environment, compressing the data using one or more processors of the subsea device, transmitting the data wirelessly from the subsea device to the surface device, and decompressing the data using the surface device.

Abstract: A method for transmitting signals in a subsea environment includes determining that a quality of an acoustic signal is below a threshold. The acoustic signal travels from a first device, through water in the subsea environment, to a second device. A parameter of the first device, the second device, or both is then adjusted to improve the quality of the acoustic signal when the quality of the acoustic signal is below the threshold.

Abstract: A diffuser for a fluid compression device includes at least one vane mounted on a hub. The at least vane includes at least one opening (5) starting at a distance ranging between 10% and 60% of the axial length of the vane. The diffuser can be used in a fluid compression device also including a housing, at least one impeller within the housing, the impeller including at least one vane, the diffuser being arranged within the housing, upstream or downstream from said impeller.

Abstract: A technique facilitates enhanced sealing capability in a space saving format when utilizing a plurality of uniquely constructed seals. As a result, the seals are useful in swivels and other types of structures to provide secure sealing between seal surfaces while reducing the overall seal area. Each seal comprises a body having a seal base combined with lips which may be activated when the activation fluid is supplied under pressure. In swivel applications, the seals may be constructed in a vertical orientation as axial face seals. The vertical orientation of the seals enables construction of the swivel with a reduced cross-section and thus a reduced hydraulic loading.

Abstract: The present disclosure relates to system and method used to transmit power to a remote location. More specifically, the present disclosure relates to a system and method used to independently energize control and monitoring functions of a remote installation prior to and/or during energizing its main circuit.

Abstract: A supply and control unit for electrical devices (7, 8, 9) of a production system comprising at least one host power supply and control device (1) being connected via a power and data transfer cable equipment (2) with said electrical devices (7, 8, 9) comprising power supply input ports (4, 5, 6), and at least one control and actuating device (3) arranged in situ with said electrical devices (7, 8, 9) to control an operational mode of said electrical devices (7, 8, 9) by carrying out a control command received from the host device (1) characterized in that at least one additional power source device (10) is arranged in situ with the electrical devices (7, 8, 9) comprising at least one flywheel energy storage being charged during charging periods linked to control commands that the operational mode of at least one electrical device (7, 8, 9) is to be started and being discharged to increase the power supply at input ports (4, 5, 6) of the electrical devices (7, 8, 9) that are being switched into the operationa

Abstract: An impeller blade that includes an impeller blade body constructed of a first material. The impeller blade body defines a leading edge that faces a direction of rotation. A second material couples to the leading edge. The second material is a more erosion resistant material than the first material. The second material extends over the leading edge a distance to absorb high angle impacts of droplets and/or particulate. A third material couples to at least a portion of the impeller blade body.

Abstract: A hydraulic arrangement for fail-safe and pump-through of a safety valve. The arrangement allows for compact actuation of a safety valve through accumulators. The arrangement supports automatic closure of the valve in the emergent circumstance of any loss of hydraulic control above the valve. Additionally, the arrangement also allows for a technique of re-opening the valve for long term killing of a well in direct response to the introduction of kill fluid without requiring any added complex interventional measures.

Abstract: A wellhead assembly of a well system for installation in a wellbore, the wellhead assembly having a longitudinal axis and including a wellhead housing including a central passage defined by an inner surface, a hanger configured to be received within the passage of the wellhead housing and couple to the inner surface of the housing, a tubular string configured to be received in the passage of the wellhead housing, wherein the tubular string includes a passage, a choke coupled to the tubular string and configured to control a fluid flow through the passage of the tubular string, and a wellhead connector configured to releasably couple to an end of the wellhead housing and including a first passage in fluid communication with passage of the tubular string when the wellhead connector is coupled to the wellhead housing.

Abstract: A technique facilitates monitoring and managing fatigue related a flexible conduit deployed from a surface vessel. Movements of the surface vessel may be measured to obtain vessel movement/position data. Based on this data, a flexible conduit bend profile may be determined via a computer-based data processing system. The flexible conduit bend profile may then be used to provide a flexible conduit fatigue profile for assessment of the flexible conduit in light of the environmental conditions. In some embodiments, the fatigue profile and assessment of the flexible conduit may be based on both functional loading and environmental loading.

Abstract: A valve includes a chamber and a piston positioned at least partially in the chamber. A first POLYMAGNET is coupled to a first side of the piston, and a second POLYMAGNET is positioned in the chamber and faces the first POLYMAGNET. An actuator is coupled to the second POLYMAGNET and rotates the second POLYMAGNET from a first rotational position to a second rotational position, which causes the first POLYMAGNET and the piston to move with respect to the second POLYMAGNET.