West Drilling Products As

Offshore & Marine As

West Production Technology As

Odd B Skjærseth

Helge Krohn

Mads Grinrød

Bjørn Eilertsen

Jarle Veshovde

Geir Ueland

A torque absorber is described for absorbing a rotational torque that occurs when tubular elements are screwed together, the torque absorber comprising at least one cylinder and at least one piston movably arranged in the cylinder. The at least one cylinder is curved in the longitudinal direction of the cylinder and the at least one piston has a corresponding curved shape, such that the at least one piston can be moved into and out of the at least one cylinder. There is also described an apparatus comprising one or more torque absorbers for absorbing a rotational torque that occurs between two parts in the apparatus on the screwing together of tubular elements.

Torque absorber for absorbing a torque and an apparatus comprising such a torque absorber

The invention relates to an intervention module () for well intervention operations in preferably a pressurized subsea well () with a wellhead () disposed on a water floor. The intervention module () is provided with necessary equipment to replace, under water, intervention tools () and thereby perform several well intervention operations in one run, without the supply of equipment from a surface vessel. The module () is lowered from a surface vessel and placed on the wellhead (), possibly a BOP (), of the well (). The intervention module () 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 () is provided with i.e. a rotatable tool magazine () arranged with several storage pipes () for intervention tools (), the relevant storage pipe () being rotatable into a position immediately above the well bore () of the well (), after which the intervention tool () is connected to a supply string (), whereas the storage pipe () is connected in a pressure-sealing manner to the well bore () below and a pressure safety device above, through which the supply string () is passed, so that the intervention tool () may be inserted safely into the well ().

Intervention module for a well

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Stavanger, Norway

Odd B Skjærseth