Through tubing bridge plug and method of installation

Details Through tubing bridge plug and method of installation Through tubing bridge plug and method of installation

1986-03-31

1987-06-09

Leppink, James A.

Wells

Processes

Cementing, plugging or consolidating

166133, 166386, E21B 33134

Patent

active

046713565

ABSTRACT:
A through tubing bridge plug is disclosed. In the preferred and illustrated embodiment, a central hollow tube having a passage therein supports the external parts. The central passage terminates top and bottom with openings or passages. At the top end, a sleeve valve mechanism originally pinned in an open position is installed. When the installation is completed, the sleeve valve is closed by a sequence of operations to permanently close the flow path. The device is set and anchored by applying a relative downward force to an external sleeve thereby deploying slips to lock the device in location, additionally deploying an upwardly facing petal basket to receive a charge of sand and cement to form a plug, and also deploying a centralizer. The device is installed at a specified elevation by anchoring slips to prevent movement, deploying the petal basket to hold sand and cement for curing, locating the device in the casing by a centralizer, and bypassing fluid around the curing sand and cement through central tubing opening below and above the uncured materials. The final step includes closing a sleeve valve to prevent further flow through the device.

REFERENCES:
patent: 2489216 (1970-01-01), Armstrong et al.
patent: 3064734 (1962-11-01), Toelke
patent: 3282347 (1966-11-01), Chenoweth
patent: 3460624 (1969-08-01), Aitken et al.
patent: 3891034 (1975-06-01), Owen et al.

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