Wellhead assembly with removable bowl adapter

Details Wellhead assembly with removable bowl adapter Wellhead assembly with removable bowl adapter

1995-09-27

1998-03-10

Neuder, William P.

Wells

Processes

Placing or shifting well part

166208, E21B 3304

Patent

active

057250561

ABSTRACT:
A wellhead assembly has provisions for emergency and nonemergency installation of oversized casing. The wellhead assembly includes a wellhead housing which has counterbore. An adapter sleeve fits within the counterbore. The adapter sleeve has an inner diameter with a profile. A casing hanger is installed during nonemergency conditions. A portion of the casing hanger seal assembly engages the inner diameter of the adapter sleeve. For an emergency when the casing hanger seal and casing hanger cannot be employed, the adapter sleeve is removed. An emergency slips is installed to support the casing. A casing hanger seal is then installed between the counterbore and casing.

REFERENCES:
patent: 4949787 (1990-08-01), Brammer et al.
patent: 5456314 (1995-10-01), Boehm, Jr. et al.

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