Wear bushing with locking collet

Details Wear bushing with locking collet Wear bushing with locking collet

1992-10-15

1994-11-01

Bui, Thuy M.

Wells

Expansible anchor or casing

Liner hanger

166348, E21B 3300

Patent

active

053600630

ABSTRACT:
A wear bushing assembly for a subsea well to protect a casing hanger during drilling latches by use of a collet. The wear bushing includes a tubular member which lands on the upper end of the casing hanger. A metal collet secures to the wear bushing. The collet has slots in it so as to allow it to radially deflect. The collet has an external shoulder which snaps into and latches in a profile formed in the casing hanger. The collet may serve as a protective portion of the wear bushing.

REFERENCES:
patent: 4978147 (1990-12-01), Henderson, Jr. et al.
patent: 5025864 (1991-06-01), Nobileau
patent: 5076356 (1991-12-01), Reimert
patent: 5080173 (1992-01-01), Brammer

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