Retrievable bushing for well conduit

Details Retrievable bushing for well conduit Retrievable bushing for well conduit

1986-03-03

1987-05-12

Novosad, Stephen J.

Wells

Central chamber sealed with respect to prepositioned...

166217, 166382, E21B 2302

Patent

active

046641874

ABSTRACT:
A removable bushing for slidably and sealably supporting a mandrel within the bore of a well conduit comprises an outer tubular body insertable in the well conduit in series relation. Said outer tubular body defines an internal seal bore and an annular latching recess adjacent the seal bore. An internal tubular body assembly is telescopically inserted in the well conduit and carries external seals engagable with the seal bore and an internal seal stack. The internal tubular body further comprises a collet having a plurality of peripherally spaced locking arms terminating in locking heads which are engagable with the annular recess in the outer tubular body. A mandrel is inserted within the bore of the outer tubular body in sealing engagement with the internal seal stack. A plurality of peripherally spaced locking lugs are carried by a sleeve on the exterior of the mandrel and are positioned by further downward movement of the mandrel beneath the locking heads of the collet arms, thus locking the collet heads in position. Upward movement of the mandrel will produce a displacement of the locking heads of the collet from engagement with the annular recess in the outer tubular body assembly and permit the concurrent removal of the mandrel and the inner tubular body assembly from the well.

REFERENCES:
patent: 3990510 (1976-11-01), Decuir
patent: 4372393 (1983-02-01), Baker
patent: 4437522 (1984-03-01), Krause, Jr. et al.
patent: 4482014 (1984-11-01), Allwin
patent: 4508167 (1985-04-01), Weinberg et al.
patent: 4513817 (1985-04-01), Weinberg

Affiliated with

Also associated with

Rating

Retrievable bushing for well conduit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Retrievable bushing for well conduit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Retrievable bushing for well conduit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1795229