Subsea caisson and method of installing same

Details Subsea caisson and method of installing same Subsea caisson and method of installing same

1983-09-13

1985-12-17

Novosad, Stephen J.

Wells

Submerged well

166356, 166222, 175217, 175422R, 405226, E21B 718

Patent

active

045587442

ABSTRACT:
A subsea caisson or silo for housing wellhead equipment and methods of installing it is disclosed. A caisson which is sized to receive equipment that is to remain subsea has a closed top and open bottom. The caisson is lowered to the seabed and hydrostatic pressure in combination with a suction jet is used to remove the internal soil. If required the caisson may include a conical suction head located near the bottom of the caisson wall and rotatable cutting heads are fixed to its lower surface so as to cut into sea bottom material of hard consistency.

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Using Air and Water to Assist Piling and Anchoring Offshore, by N. Kerr (pp. 33-42) (Paper No. C126/76).
The Hydropin: A New Concept in Mooring, by N. Kerr, Reprinted from Transactions, vol. 92, No. 2, North East Coast Institution of Engineers and Shipbuilders.
A Self-Burying Anchor of Considerable Holding Power, by N. Kerr, Paper No. OTC 2466, Offshore Technology Conference, pp. 447-453.
Vetco Technical Bulletin VTB 2-55, Cameron Oil Tools Publication 1981.

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