Mudline casing hanger mechanism incorporating improved seals and

Details Mudline casing hanger mechanism incorporating improved seals and Mudline casing hanger mechanism incorporating improved seals and

1995-10-25

1997-08-12

Neuder, William P.

Wells

Submerged well

Wellhead

166 891, F21B 3300

Patent

active

056556039

ABSTRACT:
A mudline casing hanger mechanism is set forth which is particularly intended for use in installing multiple casings which are assembled from a jack-up rig at the surface to the mudline support system of the present disclosure. This utilizes multiple casings which are arranged concentric one within the other and assembles the string of casing joints to the present support structure. This is especially useful when several casing strings are established from a rig temporarily at the location and extend to the mudline. The rig is subsequently moved and the several casing strings above the mudline are disconnected to enable the well to be shut in. All the weight of the well is transferred by casing hangers as set forth so all the weight is supported at the mudline. Later, a different platform is typically installed and the casing strings are reestablished from the mudline to the platform above the water.

REFERENCES:
patent: 5226478 (1993-07-01), Henderson, Jr. et al.
patent: 5240081 (1993-08-01), Milberger et al.

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