Intervention module for a well

Details Intervention module for a well Intervention module for a well

2006-05-02

2006-05-02

Shackelford, Heather (Department: 3671)

Wells

Submerged well

Connection or disconnection of submerged members remotely...

C166S365000, C166S075150

Reexamination Certificate

active

07036598

ABSTRACT:
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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