Wells – Packers or plugs – With expanding anchor
Patent
1993-08-12
1995-01-03
Dang, Hoang C.
Wells
Packers or plugs
With expanding anchor
166 51, 166126, E21B 33128, E21B 4304
Patent
active
053777492
ABSTRACT:
A hydraulic oil and gas well downhole packer apparatus for use in a well casing below a wellhead and in combination with a coil tubing unit provides a tool body having a longitudinally extending tool bore and an upper end portion that connects to the lower free end of the coiled tubing unit during use. The tool body includes an inner elongated hollow mandrel with a hydraulic piston movable disposed upon the external surface of the mandrel. The piston is movable between an initial "running" position and a final "setting" position. An external sleeve is engaged by the piston when it moves between the running and setting positions, the external sleeve engaging slips that expand to anchor the tool body to the well casing. An annular packer member is expandable responsive to sliding movement of the external sleeve and is positioned below the slips for forming a seal between the tool body and the casing at a position near the lower end portion of the tool body.
REFERENCES:
patent: 4441561 (1984-04-01), DEX
patent: 4688634 (1987-08-01), Lustig et al.
patent: 4823882 (1989-04-01), Stokley et al.
patent: 4936387 (1990-06-01), Rubbo
patent: 5069280 (1991-12-01), McKee et al.
patent: 5291947 (1994-03-01), Stracke
patent: 5305828 (1994-04-01), White et al.
1993 World Oil's Coiled Tubing Handbook.
A publication entitled "Louisiana Oil Tools Inc., Model 12 Sand Control System".
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