Wells – Packers or plugs – With expanding anchor
Patent
1992-09-22
1994-07-19
Britts, Ramon S.
Wells
Packers or plugs
With expanding anchor
166138, 166210, E21B 2306
Patent
active
053300009
ABSTRACT:
A latching device to be used with a cement squeeze packer and a stinger is disclosed. The latching device enables an operator at the surface of an oil or gas well to open and close the squeeze packer valve without the risk of pulling the stinger out of the packer. The latch assembly is installed on the stinger assembly and is provided with a plurality of radially flexible fingers that engage the uphole end of the packer mandrel. Preferably, a series of ribs on both the latch and the uphole end of the mandrel are engaged when the stinger assembly descends into the hole and the stinger enters the packer. These ribs prevent the stinger from coming out of the packer until a predetermined tensile force is applied.
REFERENCES:
patent: 3570595 (1968-11-01), Berryman
patent: 3702634 (1972-11-01), Anderson et al.
patent: 3827258 (1974-08-01), Kammerer, Jr. et al.
patent: 3963076 (1976-06-01), Winslow
patent: 4687063 (1987-08-01), Gilbert
patent: 4751967 (1988-06-01), Blandford et al.
patent: 4834184 (1989-05-01), Streich et al.
EZ Drill Squeeze Packers, Halliburton Services Sales & Service Catalog, 1990, pp. 146-147.
Baker Snap Latch Stinger Subs, Baker Service Tools Catalog, 1990, pp. 23, 23, 27.
Bersheidt Kevin
Bohlen Jerry T.
Givens Kenneth J.
Hushbeck Donald
Stenzel Eric
Britts Ramon S.
Halliburton Company
Tsay Frank S.
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