Weight-set pack-off unit

Details Weight-set pack-off unit Weight-set pack-off unit

1981-10-29

1983-12-20

Purser, Ernest R.

Wells

Packers or plugs

With expanding anchor

285139, 285 18, F21B 2300, F16L 3500

Patent

active

044211643

ABSTRACT:
A weight-set pack-off unit for sealing the annulus between inner and outer pipes, such as a mandrel casing hanger and a wellhead body in a well. The pack-off unit includes an expandable split ring receivable in a groove in the outer pipe to prevent upward movement of the pack-off unit relative to the outer pipe. The split ring is supported by a second ring which is shear-pinned to the pack-off unit and which moves the split ring into the locking position. The pack-off unit has a downwardly facing load-bearing shoulder in engagement with an upwardly facing load-bearing shoulder on the inner pipe, thereby increasing the unit's capacity to carry downward loads.

REFERENCES:
patent: 3268241 (1966-08-01), Castor et al.
patent: 3404736 (1968-10-01), Nelson et al.
patent: 3457992 (1969-07-01), Brown
patent: 3789925 (1974-02-01), Brown
patent: 3972546 (1976-08-01), Putch
patent: 4138144 (1979-02-01), Pierce, Jr.

Affiliated with

Also associated with

Rating

Weight-set pack-off unit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Weight-set pack-off unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Weight-set pack-off unit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-103131