Wells – Packers or plugs – With controllable passage between central chamber and space...
Patent
1991-05-10
1992-10-20
Dang, Hoang C.
Wells
Packers or plugs
With controllable passage between central chamber and space...
166237, 166319, 166321, 166323, 166332, E21B 3410
Patent
active
051562073
ABSTRACT:
A hydraulically controlled apparatus responsive to changes in well annulus pressure is disclosed. The apparatus is run into a well bore intersecting an oil and gas reservoir with perforations communicating the oil and gas reservoir with the well bore. The apparatus has an associated packer to effectively seal off the perforations in the well bore. The apparatus contains a cylindrical housing with ports on the top end and bottom end, and an operating mandrel is disposed therein. A disengaging sleeve operably connected with the operating mandrel allows the ports contained on the lower portion of the cylindrical housing below the packer to be opened and closed selectively, thereby allowing communication of the reservoir pressure through the apparatus. The disengaging sleeve and operating mandrel are activated by either an increase or decrease in annulus pressure.
REFERENCES:
patent: Re29562 (1978-03-01), Wray et al.
patent: 2984303 (1961-05-01), Baker
patent: 3007524 (1961-11-01), Pistole et al.
patent: 3703193 (1972-11-01), Raulins
patent: 3856085 (1974-12-01), Holden et al.
patent: 3858649 (1975-01-01), Wray et al.
patent: 3860066 (1975-01-01), Pearce et al.
patent: 4058165 (1977-11-01), Holden et al.
patent: 4125165 (1978-11-01), Helmus
patent: 4253521 (1981-03-01), Savage
patent: 4274486 (1981-06-01), Fredd
patent: 4444268 (1984-04-01), Barrington
patent: 4448216 (1984-05-01), Speegle et al.
patent: 4448254 (1984-05-01), Barrington
patent: 4467867 (1984-08-01), Baker
patent: 4508173 (1985-04-01), Read
patent: 4550780 (1985-11-01), Mott
patent: 4566478 (1986-01-01), Deaton
patent: 4641707 (1987-02-01), Akkerman
Edwards Arnold G.
Haugen David M.
Kinney Charles W.
Dang Hoang C.
Domingue C. Dean
Duzan James R.
Halliburton Company
Walkowski Joseph A.
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