Swivel
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United States of America Patent
Stats
-
May 1, 2001
Grant Date -
N/A
app pub date -
Feb 26, 1999
filing date -
Aug 27, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A swivel assembly for installation at a well for subsea production of oil or gas and adapted to be connected to a production vessel at the sea surface. The swivel assembly comprises a main fluid swivel having at least two paths and an electric/hydraulic auxiliary swivel for signal communication and power transfer. The fluid swivel is provided with a rotatable swivel housing at the top of a stationary christmas tree, preferably comprising a small number of valves, such as a production master valve and an annulus master valve. The paths are through-running vertically in the central core member of the fluid swivel so as to make possible well intervention from the upper side of the fluid swivel.
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