Importance

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Abstract

Subsea pressure booster comprising an electric motor (2) and a compressor (3), multiphase pump or pump driven by the electric motor, for boosting the pressure of a subsea flow comprising petroleum gas or liquid, distinctive in that the pressure booster comprises a common pressure housing (1) for the electric motor and compressor, multiphase pump or pump; a diaphragm separating the common pressure housing into two compartments, one compartment for the electric motor and one compartment for the compressor; multiphase pump or pump; a shaft connecting the electric motor to the compressor, multiphase pump or pump; and at least one oil lubricated mechanical shaft seal arranged between the shaft and diaphragm; and bearings on the shaft, preferably at least two radial and one axial oil lubricated bearings (4, 4′, 4″) for an oil filled or gas filled motor compartment or magnetic bearings or oil lubricated bearings for a gas filled motor compartment.

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First Claim