Support means for a well riser or the like

Details Support means for a well riser or the like Support means for a well riser or the like

1975-06-09

1976-10-12

Nunberg, Casmir A.

Wells

Receptacles

With separate air chamber having openable passage

166 5, 175 7, B63B 3500, E21B 1502

Patent

active

039849902

ABSTRACT:
Improvements in support means for well risers wherein the risers extend through a rotary table on a floating vessel down to a subsea well. A spider supports the upper end of the riser and hydraulically operated gimbal means support the spider with respect to the table to maintain a constant load on the riser. Inertia absorbing means is associated with the gimbal means so that, when sections or buoyancy chambers or the like are added to the riser and it is lowered down to the well, or vessel movement takes place, any off-center load that is acting on the spider that is not equally distributed, the inertia absorbing means absorbs such load and equally distributes it so as to maintain a constant load on the riser.

REFERENCES:
patent: 3319981 (1967-05-01), Burgess
patent: 3481294 (1969-12-01), Vincent
patent: R26290 (1967-10-01), Rand
patent: R27261 (1971-12-01), Brommell et al.

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