Device and a method for well intervention

Details Device and a method for well intervention Device and a method for well intervention

2007-12-11

2007-12-11

Lagman, Frederick L. (Department: 3673)

Hydraulic and earth engineering

Marine structure or fabrication thereof

With anchoring of structure to marine floor

C166S355000

Reexamination Certificate

active

11274426

ABSTRACT:
A handling device for well intervention, the handling device being releasably connected, in an operative position, to a riser and to a heave compensator which is arranged to maintain a prescribed tensioning of the riser. The handling device comprising: a lower riser securing device; a substantially vertical tensioning frame provided with at least two parallel guides; a jacking table provided with an upper riser securing device; at least one tension-resistant connection between the tensioning frame and the heave compensator located thereabove; the jacking table being movably connected to the at least two parallel guides, at least one of the at least two parallel guides including lifting screws for moving the jacking table along the guides in their, in the position of use, vertical extent, and the jacking table including hydraulic cylinders for moving the upper riser securing device in a horizontal direction along at least one axis of movement.

REFERENCES:
patent: 3791628 (1974-02-01), Burns et al.
patent: 3834672 (1974-09-01), Hawley et al.
patent: 4395160 (1983-07-01), deJong
patent: 6708765 (2004-03-01), Eilertsen
patent: 7219739 (2007-05-01), Robichaux

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