Vertical xmas tree and workover assembly
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[0029]While the invention has been described in general terms above, a more detailed and non-limiting example of embodiment is presented in the following with reference to the drawings, in which
[0030]FIG. 1a is a cross section view of a prior art gate valve in an open position;
[0031]FIG. 1b is a cross section view of the valve in FIG. 1a in a closed position;
[0032]FIG. 1c is an enlarged cross section view of the valve in FIG. 1b;
[0033]FIG. 2 is a schematic overview of a floating surface installation performing workover operation in a subsea well;
[0034]FIG. 3 is a principle view of a workover setup according to prior art;
[0035]FIG. 4 is a principle view according to FIG. 3, however illustrating a setup according to the present invention; and
[0036]FIG. 5 is a principle view of a vertical Xmas tree in the process of landing on a subsea wellhead.
[0037]FIG. 1a to FIG. 1c illustrate a known valve 10 which is suited for well control of a subsea hydrocarbon well. FIG. 1a a shows the valve ...
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