Wells – Packers or plugs – With expanding anchor
Patent
1988-09-15
1989-05-30
Novosad, Stephen J.
Wells
Packers or plugs
With expanding anchor
166187, E21B 33128, E21B 33129
Patent
active
048341754
ABSTRACT:
A hydraulic well packer for releasable setting within a well casing is disclosed. The packer includes a hydraulic actuator assembly mounted between annular packing seal elements and anchor slips, with the seal elements, hydraulic actuator assembly and anchor slips being mounted for sliding movement along the packer mandrel. Premature retraction of the setting cylinder relative to the piston is prevented by interlocking action of a shear screw lock and a transfer lug against the piston, setting cylinder and a tubular setting wedge. The piston is locked against the anchor slips and the slip housing so that seals mounted on the piston head which engage the mandrel and the setting cylinder cannot be dragged and worn out prematurely in response to hydraulic pressure fluctuations imposed after the packer has been set and sealed. The setting piston and setting cylinder are locked together during run-in by the shear screw and by interlocking engagement of the transfer lug. The transfer lug is shifted to provide a direct interlocking engagement between the setting piston and the setting wedge assembly after hydraulic pressurization has been initiated to a level sufficient to cause separation of the shear screw. According to this arrangement, the shear screw lock is substantially isolated with respect to the weight of the well packer and any production equipment connected to the packer and can only be sheared in response to the application of a hydraulic setting force developed by introduction of hydraulic pressure through a tubing string.
REFERENCES:
patent: 3122205 (1964-02-01), Brown et al.
patent: 3215205 (1965-11-01), Sizer
patent: 3215207 (1965-11-01), Sizer
patent: 3398795 (1968-08-01), Elliston
patent: 3987854 (1976-10-01), Callihan et al.
patent: 4018272 (1977-04-01), Brown et al.
patent: 4044826 (1977-08-01), Crowe
patent: 4180132 (1979-12-01), Young
patent: 4224987 (1980-09-01), Allen
patent: 4345649 (1982-08-01), Baugh et al.
patent: 4438811 (1984-03-01), Patel
patent: 4441553 (1984-04-01), Setterberg, Jr. et al.
patent: 4516634 (1985-05-01), Pitts
patent: 4671354 (1987-06-01), Henderson et al.
patent: 4688634 (1987-08-01), Lustig et al.
Ross Colby M.
White Pat M.
Griggs Dennis T.
Novosad Stephen J.
Otis Engineering Corporation
LandOfFree
Hydraulic versa-trieve packer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydraulic versa-trieve packer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic versa-trieve packer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2145615