Abstract:
A counter-rotating wet gas compressor (100) for deployment and operation on the sea floor is described. The compressor has alternating rows of impellers (220, 250), with each successive row of impellers being mounted a central hub (210) or to an outer sleeve (240). According to some embodiments, no static diffusers are positioned between the alternating counter-rotating rows of impellers such that the design is structurally robust, compact and capable of compressing fluids that contain significant portions of liquid phase.
Abstract:
A control and instrumentation system utilizes a subsea data hub to establish closed loop of between subsea production system components and a surface located controller. The control and instrumentation system can be utilize to operational control all of the required process components of the subsea production system from the surface located controller.
Abstract:
There is disclosed a subsea cooler for the cooling of a fluid flowing in a subsea flow line. The subsea cooler comprises an inlet and an outlet which are connectable to the subsea flow line and at least two cooling sections arranged in fluid communication with the inlet and the outlet of the subsea cooler. Each cooling section includes a plurality of cooling pipes which are configured such that they exchange heat energy with the surrounding sea water when the subsea cooler is in use. The subsea cooler is further provided with valve means such that the flow of fluid through the cooling sections may be regulated individually. There is also disclosed a method for removal of accumulated wax, hydrates and sand and debris which has accumulated in the subsea cooler wherein separate cooling section are shut off whereby the temperature of the fluid flowing through the subsea cooler is increased thereby melting the wax and hydrates, and whereby the speed of the fluid flow through the subsea cooler is increased thereby jetting out sand and debris.
Abstract:
A bearing system comprising a wheel assembly transmitting load to a damping assembly via connecting means, wherein the connecting means enable angular rotation between the wheel assembly and the damping assembly.
Abstract:
A heat exchanger system (150) is described that includes an inlet (202) and an outlet (204) for a first fluid and a heat exchanger between the inlet (202) and the outlet (206) wherein the first fluid circulates, wherein the heat exchanger comprises at least one deflector (230, 232, 234, 236, 238, 430, 432) 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 (150). A method to exchange heat between a first and a second fluid comprising providing a heat exchanger system (150) between the first and the second fluids, said heat exchanger system (150) comprising a heat exchanger wherein the first fluid circulates and increasing the flow turbulences of a second fluid around the heat exchanger.
Abstract:
A method for removing hydrate plugs in a hydrocarbon production station, the method comprising: fluidically isolating the production station; diverting production flow to a bypass line; and adjusting the pressure in the production station to a level sufficient to melt the hydrate plugs.
Abstract:
Apparatus for use in sampling multiphase fluid in a fluid transport pipeline, the apparatus comprising: a process fluid conduit (10) comprising a blind leg (16) connected to an upstream section (12) and a downstream section (14); and wherein a fluid sampling port (18) is provided in the blind leg.
Abstract:
The invention concerns a subsea system transporting fluid, wherein the subsea system comprises a first part having a flow path carrying a flow of fluid and at least a second part having a flow path provided for carrying fluid. The second part is temporarily being closed off from the flow path of the first part of the subsea system. The heat from the fluid transported in the first part of the subsea system is transferred to the second part by a heat conducting structure establishing a contact between the first and second part of the subsea system, to prevent the formation of hydrates in the second part of the subsea system.
Abstract:
Means for transferring electric power and/or signals comprises an electrical power slip-ring system (EPSR) (3) comprising a housing (4) containing an electrical slip-rings, the housing (4) being connected to a support structure (6) of a vessel (7) and a brush carrier unit (8) that is in slidable contact with the electrical conductor means, the brush carrier (8) being fixed to the turret (2) and a swivel unit (10) that extends thorough the centre of the housing (4). The turret (2) and support structure (6) may be disposed on the vessel in various configurations such as an internal turret configuration, a submerged turret configuration or an external turret configuration.
Abstract:
A method and a regulating valve for maintaining a fluid pressure within a defined volume (3), and simultaneous registering of discharge of fluid from the volume as a result of leakage or consumption. The fluid is supplied from a pressure regulating valve (20) provided with a means (5-7, 22-26) which opens for the supply of fluid to the volume (3) when the pressure therein has sunk below a first value (P1), and which shuts off the fluid supply when the pressure in the volume (3) has achieved a preset second value (P2) which is substantially higher than the first value (P1). Thus, after each opening of the regulating valve (20) there occurs a distinct pressure increase at the valve outlet. This pressure increase is registered as a pressure pulse, and the frequency of delivered pressure pulses is monitored and utilised as a measure of occurring leakage and/or consumption of the supplied fluid.