Run and retrieval wear bushing and tool

Details Run and retrieval wear bushing and tool Run and retrieval wear bushing and tool

2005-09-20

2005-09-20

Bagnell, David (Department: 3672)

Wells

Above ground apparatus

With assembly or disassembly means

C166S208000, C166S085500

Reexamination Certificate

active

06945325

ABSTRACT:
A wear bushing has a lower portion that is landed on a casing hanger in a wellhead housing. The wear bushing is mounted to the running tool, which is joined to a drill string. With running-in keys locked on the tool, the wear bushing is lowered down the well into the wellhead housing. The wear bushing is landed on the casing hanger and anti-rotation pins are pressed upward as they contact a seal assembly. The wear bushing is rotated until the anti-rotation pins align and fall into slots. With the anti-rotation pins in the slots, the running tool is released from the wear bushing by opposite rotation, and the running tool may then be run deeper into the well. The wear bushing is extracted using a retrieval tool. The retrieval tool is axially positioned relative to the wear bushing such that tool retrieval teeth engage a wear bushing retrieval ring so that the wear bushing can be extracted from the casing hanger.

REFERENCES:
patent: 4545434 (1985-10-01), Higgins
patent: 5025864 (1991-06-01), Nobileau
patent: 5044438 (1991-09-01), Young
patent: 5163514 (1992-11-01), Jennings
patent: 5199495 (1993-04-01), Brammer et al.
patent: 5360063 (1994-11-01), Henderson, Jr.

Affiliated with

Also associated with

Rating

Run and retrieval wear bushing and tool does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Run and retrieval wear bushing and tool, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Run and retrieval wear bushing and tool will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3450603