Abstract: A temperature sensor assembly for measuring temperature of a fluid in a conduit, the assembly comprising a temperature sensor and a thermowell housing the temperature sensor and embedded in a wall defining the conduit. The thermowell has a face for interfacing the fluid that is substantially non-intrusive relative the conduit and a groove that extends radially inward of the thermowell housing to minimize the cross-sectional area of the thermowell body proximate the location of the temperature sensor.

Abstract: A temperature sensor assembly for measuring temperature of a fluid in a conduit, the assembly comprising a temperature sensor and a thermowell housing the temperature sensor and embedded in a wall defining the conduit. The thermowell has a face for interfacing the fluid that is substantially non-intrusive relative the conduit and a groove that extends radially inward of the thermowell housing to minimize the cross-sectional area of the thermowell body proximate the location of the temperature sensor.

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 seabed-disposed pump that includes an inlet to receive a fluid flow and an outlet. The apparatus includes a liquid retainer that is adapted to receive a fluid flow that is produced by a subsea well. The liquid retainer selectively retains and releases liquid from the fluid flow to regulate a gas volume fraction of the fluid flow that is received at the inlet of the pump.

Abstract: An apparatus includes a subsea flow line and a two stage heat exchanger. The subsea flow line communicates a process flow that is associated with a subsea well, and the heat exchanger transfers thermal energy between the process flow and an ambient sea. The heat exchanger includes a primary circuit in communication with the flow line to transfer thermal energy with the process flow; and the heat exchanger includes a secondary circuit in thermal communication with the primary circuit to transfer thermal energy with the primary circuit.

Abstract: A system for recirculating a portion of a liquid fraction of multiphase production fluid to a pump for enhance 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: System and methods are configured to adjust fluid pressure within a barrier fluid system on a subsea fluid processing machine. More specifically, a barrier fluid pressure system is located at the subsea location and includes a barrier fluid pressure regulator module having one input communicating or being pressure matched with a process fluid flowline and a second input communicating with the barrier fluid pressure system. The pressure regulator module is configured to locally adjust the barrier fluid pressure depending upon the fluid process pressure.

Abstract: An apparatus includes a seabed-disposed pump that includes an inlet to receive a fluid flow and an outlet. The apparatus includes a liquid retainer that is adapted to receive a fluid flow that is produced by a subsea well. The liquid retainer selectively retains and releases liquid from the fluid flow to regulate a gas volume fraction of the fluid flow that is received at the inlet of the pump.

Abstract: An apparatus includes a first flow line, a second flow line and a seabed-disposed pump station. The first and second flow lines extend to a sea surface platform. The pump station to, in response to a shut down of a production flow in the first flow line, operate a pump of the station to transfer liquid from the first flow line to the second flow line to reduce a liquid column in the first flow line and push liquid in the second flow line to the sea surface platform for removal; and open a bypass valve for the pump to allow a liquid column in the second flow line to decrease to reduce a pressure in the second flow line during a period in which the pump station is shut down. The pump station may also be operated to communicate a pig through flow lines, and during a time interval in which the production is shut down, the pump station may be operated in a bypass mode to prevent hydrate formation in a subsea flow line.

Abstract: An apparatus includes a subsea flow line and a two stage heat exchanger. The subsea flow line communicates a process flow that is associated with a subsea well, and the heat exchanger transfers thermal energy between the process flow and an ambient sea. The heat exchanger includes a primary circuit in communication with the flow line to transfer thermal energy with the process flow; and the heat exchanger includes a secondary circuit in thermal communication with the primary circuit to transfer thermal energy with the primary circuit.

Abstract: System and methods are configured to adjust fluid pressure within a barrier fluid system on a subsea fluid processing machine. More specifically, a barrier fluid pressure system is located at the subsea location and includes a barrier fluid pressure regulator module having one input communicating or being pressure matched with a process fluid flowline and a second input communicating with the barrier fluid pressure system. The pressure regulator module is configured to locally adjust the barrier fluid pressure depending upon the fluid process pressure.

Abstract: Systems and methods for controlled equalization of fluid pressure are described. The system can include a flow restricting nozzle in line with an accumulator which together provide a gradual, controlled equalization of pressure between two locations. For example, in the subsea environment, the pressures can vary between a subsea processing station and a subsea flow line. The systems can be configured as ROV retrievable, or they can be integrated into the subsea processing station. In some cases, more than one accumulator and/or more than one flow restricting nozzles can be used in the system to provide for versatility and robustness.

Abstract: An actuatable apparatus, such as a mixer or flow splitter, is described that forms part of a multiphase pumping station. An outer tank has an upper inlet and an actuatable inner vessel disposed within the outer vessel. Multiphase fluid can pass from the outer vessel into the inner vessel though large upper openings. The inner vessel is configured to be actuatable such that the inner vessel moves in a vertical direction, thereby altering the size of an annular opening between the bottom of the inner vessel and the outer vessel. In some cases, the annular opening is adjusted to alter the operating envelope of a mixer. In other cases, the annular opening is opened to allow for sand cleaning. In yet other cases the apparatus is a downstream flow splitter, and the annulus is shut off to prevent loss of liquid phase during the startup of a dead field.

Abstract: An actuatable apparatus, such as a mixer or flow splitter, is described that forms part of a multiphase pumping station. An outer tank has an upper inlet and an actuatable inner vessel disposed within the outer vessel. Multiphase fluid can pass from the outer vessel into the inner vessel though large upper openings. The inner vessel is configured to be actuatable such that the inner vessel moves in a vertical direction, thereby altering the size of an annular opening between the bottom of the inner vessel and the outer vessel. In some cases, the annular opening is adjusted to alter the operating envelope of a mixer. In other cases, the annular opening is opened to allow for sand cleaning. In yet other cases the apparatus is a downstream flow splitter, and the annulus is shut off to prevent loss of liquid phase during the startup of a dead field.

Abstract: Systems and methods for controlled equalization of fluid pressure are described. The system can include a flow restricting nozzle in line with an accumulator which together provide a gradual, controlled equalization of pressure between two locations. For example, in the subsea environment, the pressures can vary between a subsea processing station and a subsea flow line. The systems can be configured as ROV retrievable, or they can be integrated into the subsea processing station. In some cases, more than one accumulator and/or more than one flow restricting nozzles can be used in the system to provide for versatility and robustness.

Abstract: A heat exchanger system is described that includes an inlet and an outlet for a first fluid and a heat exchanger between the inlet and the outlet wherein the first fluid circulates, wherein the heat exchanger comprises at least one deflector to guide the flow of a second fluid. A method is also described to exchange heat between a first and a second fluid using free convection velocity field to create forced convection in the heat exchanger of a heat exchanger system. A method to exchange heat between a first and a second fluid comprising providing a heat exchanger system between the first and the second fluids, said heat exchanger system comprising a heat exchanger wherein the first fluid circulates and increasing the flow turbulences of a second fluid around the heat exchanger.

Abstract: The present invention relates to a device for providing a controllable pressure reduction between a first fluid conducting pipe (1) and a second fluid conducting pipe (2). The device (10) comprises a fluid inlet (11) in fluid communication with the first fluid conducting pipe (1), and a fluid outlet (12) in fluid communication with the second fluid conducting pipe (2). A S-shaped, spiral shaped, sinus shaped or the like fluid communicating, pressure reduction channel (14) is provided between the fluid inlet (11) and the fluid outlet (12).