| 摘要 |
The invention relates to an intervention module ( 18 ) for well intervention operations in preferably a pressurized subsea well ( 2 ) with a wellhead ( 4 ) disposed on a water floor. The intervention module ( 18 ) is provided with necessary equipment to replace, under water, intervention tools ( 54 ) and thereby perform several well intervention operations in one run, without the supply of equipment from a surface vessel. The module ( 18 ) is lowered from a surface vessel and placed on the wellhead ( 4 ), possibly a BOP ( 12 ), of the well ( 2 ). The intervention module ( 18 ) is connected to the surface vessel through a connecting line/hose or a wireless connection which communicates, as a minimum, necessary control and feed-back signals. The module ( 18 ) is provided with i.e. a rotatable tool magazine ( 38 ) arranged with several storage pipes ( 52 ) for intervention tools ( 54 ), the relevant storage pipe ( 52 ) being rotatable into a position immediately above the well bore ( 24 ) of the well ( 2 ), after which the intervention tool ( 54 ) is connected to a supply string ( 32 ), whereas the storage pipe ( 52 ) is connected in a pressure-sealing manner to the well bore ( 24 ) below and a pressure safety device above, through which the supply string ( 32 ) is passed, so that the intervention tool ( 54 ) may be inserted safely into the well ( 2 ).
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