Abstract:
A system of exploiting a subsea hydrocarbon reserve, comprising a wet-trees process or a dry-trees process extracting hydrocarbon reserve from production wells (40) on the seabed, establishing a production riser (30) for transferring hydrocarbon reserve from the production wells (40) to a host platform and/or a floating production storage offloading unit characterized in that: a) the wet-tree process comprises of host platform (210) and/or floating production storage offloading unit (10) wherein said host platform (210) and/or floating production storage offloading unit (10) contain at least two modular processing units (20) , topside of which are connected in series located on the host platform (210) and/or the floating production storage offloading (FPSO) unit (10) ; b) the dry-tree process comprises of host platform (310) extracting hydrocarbon reserve from seabed production wells (40) via production riser (30) and said host platform (310) contains a plurality of dry-tree unit (320) extracts fluids from production wells (40) to process trains (60) located on the host platform (310) .
Abstract:
A control system of modular seabed processing unit (100) using one of a process module as a test separator comprising a system-module (110) to which external lines are connected, the system-module (110) includes a first portion (31) of the system-module isolating and connecting means (30), for acting on received fluid. At least one inlet flow line (21) and at least one outlet flow line (81) being connected to the first portion (31) of the system-module isolating and connecting means (30) for selective isolation of system-module from, or connection of the system-module to the external flow lines by means of a second complementary portion (32) of a manifold (130). The system-module includes control means (60) for controlling operation of the system-module characterized in that the system-module (110) includes at least one actuating means (121) connected to a control means (60) wherein the actuating means (121) of the system-module (110) associated with diverter valve (131) situated at a manifold (130). The diverter valve (131) is connectable and disconnectable to fluid carrying conduits from production well (160, 170) and is enabled to control the direction of fluid flow into the system-module.
Abstract:
The present invention relates to an electrical power transmission system (100) which utilizes HVDC technology to supply power over long distance to an underwater system (130) such as a modular seabed processing system (300). The system (100) comprises a host station (110), a remote power conversion facility (120) and an Integrated Service Umbilical (150) which is connected to the underwater system (130). The host station (110) transmits DC power through a submarine power cable (140) to the remote power conversion facility (120) which is more than 100 km from the host station (110). Thereon, the remote power conversion facility (120) which includes a DC to AC inverter (123), a transformer (122) and a local control station (121), converts the DC power to the required AC power for the underwater system (130). The operation of the transmission of power to the underwater system (130) is monitored and controlled through a master local control station (111) at the host station (110) and/or a local control station (121) on the remote power conversion facility (120). Advantageously, electrical power may be supplied to an underwater system (130) which is more than 100 km from a power source. In addition, the underwater system (130) and the power transmitted can be remotely monitored and controlled.
Abstract:
Gas is supplied from a host facility (2) to an underwater gas compressor (10) via a connecting pipeline (6) and the gas compressor is connected to a plurality of gas injection wells (7) for a hydrocarbon reservoir via well supply flowlines (8). The gas compressor (10) compresses the supplied gas to a higher pressure, and drives the gas into the reservoir via the flowlines (8) and gas injection wells (7) at a pressure at least as high as the pressure of the production fluid in the reservoir. This raises the overall pressure in the reservoir to drive production fluid there to the host facility (2). The compressed gas may alternatively be injected into production fluid in a production well to provide a gas lift effect.