Onesubsea IP UK Limited

Framo Engineering As

Åsmund Valland

Helge Dale

Hans Fredrik Kjellnes

Nils-Egil Kangas

Atle K Berle

Marius Askevold

Thomas Bucher-Johannessen

Stig Kåre Kanstad

Joakim Almqvist

A contra-rotating compressor includes a first shaft assembly disposed in a housing, the first shaft assembly including an outer shaft, and a first plurality of impellers coupled to the outer shaft, wherein the outer shaft includes a final stage that includes a final impeller of the first plurality of impellers, a second shaft assembly disposed in the housing and rotatable about the longitudinal axis, the second shaft assembly including a second plurality of impellers, a first pair of annular seals between the final stage and an inner surface of the housing, the pair of annular seals being configured to permit relative rotation between the final stage and the housing, and a third annular seal positioned between the outer surface of the final stage and an inner surface of the second shaft assembly, the third annular seal configured to permit contra-rotation between the final stage and the second shaft assembly.

Thrust-balancing wet gas compressor

A subsea water injection pump includes components that are cooled and lubricated by the process fluid. The pump includes opposing stages of impellers in a 'back-to-back' arrangement such that the axial forces of the impeller stages partially or nearly fully offset each other. In some cases, a combination of barrier fluid and process fluid is used for lubrication and cooling.

Subsea process lubricated water injection pump

Growing community of inventors

Bønes, Norway

Åsmund Valland