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 floow. 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.a. 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) is passed, so that the intervention tool (54) may be inserted safely into the well (2).