Other

Fmc Kongsberg Subsea as

Leif Arne Tønnessen

Jan Helge Hassel

Lachlan McKenzie

Mads Sørsdal

Paolo Romanello

Lachlan Mckenzie

Method for evacuating hydrocarbon from a subsea process module (), the subsea process module having an upper fluid connection point () and a lower fluid connection point (), the method comprising: connecting () a receiving container line () to the upper fluid connection point () of the subsea process module (); connecting () a liquid adding line () to the lower fluid connection point () of the subsea process module (); displacing () hydrocarbon by a liquid displacement medium added through the liquid adding line (); removing () the liquid adding line from the lower fluid connection point (); connecting () a gas adding line () to either the upper fluid connection point () or a lower fluid connection point (); connecting () a receiving container line () to the lower fluid connection point () and or another lower fluid connection point; diluting () the remaining hydrocarbon by a gas medium added through the gas adding line ().

Method for evacuating hydrocarbon from a subsea process module

A subsea system includes a first foundation structure supporting a first compressor train and having a connection interface for connecting to a second foundation structure supporting an additional compressor train. The first compressor train includes a first compressor having an inlet connectable via a fluid line to a well flow line. A compressed fluid line having a flow regulation device is connected to an outlet of the first compressor and to a common outlet for compressed fluid. A first connection line is connected to the compressed fluid line at a position upstream of the flow regulation device, and a third connection line is connected to the fluid line at a position upstream of the first compressor. Each of the first and third connection lines includes a flow regulating device and is configured to connect to the additional compressor train. A second connection line is connected to the compressed fluid line at a position downstream of the flow regulation device and is configured to connect to the additional compressor train to thereby connect the additional compressor train to the common outlet.

Modularized subsea compressor train and method of installation

A subsea hydrocarbon flow compression system () for receiving a hydrocarbon stream from at least one upstream flowline () and supplying the hydrocarbon stream to at least one downstream flowline () at an increased pressure, wherein the compression system comprises first and second compressor trains (), wherein each compressor train comprises an inlet port () which is connectable to the at least one upstream flowline (); an outlet port () which is connectable to the at least one downstream flowline (); a conditioning unit () which is connected to the inlet port via a first flowline (); and a first flow path for the hydrocarbon fluid comprising a compressor (), which compressor is connected to the conditioning unit via a second flowline () and to the outlet port via a third flowline (), wherein a controllable first valve () is arranged in the third flowline of the first compressor train for controlling hydrocarbon flow from the compressor to the outlet port of the first compressor train. A controllable second valve () is arranged in the second flowline of the second compressor train for controlling hydrocarbon flow from the conditioning unit to the compressor of the second compressor train. The system further comprises a first cross-over flowline () interconnecting the third flowline of the first compressor train upstream of the first valve and the second flowline of the second compressor train downstream of the second valve, wherein a controllable first cross-over valve () is arranged in the first cross-over flowline for controlling hydrocarbon flow through the first cross-over flowline.

Subsea compression system and method

A compressor system includes a compressor unit having a first rotor and a permanent magnet motor unit having a second rotor connected to the first rotor. The first and second rotors are rotatably supported on at least first, second and third bearings, and the compressor system further includes a housing having a first chamber in which the motor unit is located, a second chamber in which the compressor unit is located and a third chamber in which at least the first bearing is located. The first and third chambers are fluidly sealed from the second chamber and contain a cooling, lubricating and barrier liquid within which the motor unit and the first bearing are submerged, and during operation of the compressor system the fluid is circulated between the first and third chambers.

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Bærums Verk, Norway

Leif Arne Tønnessen