Expandable retrievable bridge plug
AssigneesBronnteknologiutvikling AS, Maritime Well Service AS
InventorsEpen Hiorth, Frode Andersen, Dag Ravn Pedersen
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AssigneesBronnteknologiutvikling AS, Maritime Well Service AS
InventorsEpen Hiorth, Frode Andersen, Dag Ravn Pedersen
Estimating the term…
A bridge plug (1) for use in a casing (7), for example in oil and/or gas wells, comprising a packing element (2) of a resilient material is disclosed. The packing element (2) is adapted for at impact from a running tool to expand from a first diameter, to a second diameter that is greater than the first diameter which corresponds to the inner diameter of the casing that is to be sealed. The packing element (2) is divided in zones forming at least one expandable sealing packing element (34, 35) and at least one expandable support packing element (31, 32, 33), where the support packing elements (31, 32, 33) are expandable to a smaller diameter than the sealing packing elements (34, 35). The bridge plug (1) is further comprised of an anchoring means (3) that is provided for holding the bridge plug (1) in its place in the casing by a friction surface (28) that is pressed radially against the casing (7).
A bridge plug for use in a casing, comprising a packing element of a resilient material, where the packing element is adapted for, at impact from a running tool, to expand from a first diameter, to a second diameter that is greater than the first diameter corresponding to an inner diameter of the casing to be sealed, wherein the packing element includes at least one expandable sealing packing element and at least one expandable support packing element where the support packing elements expand to a smaller diameter than the sealing packing elements, and that the bridge plug further comprises an anchoring means that is provided for holding the bridge plug in place in the casing by a friction surface that is pressed radially out against the casing, the packing element having an inner core disposed between two conical packing element clamps, a reinforcement disposed over the inner core, and an outer layer molded to the reinforcement and the core, the inner core being composed of a resilient material and the reinforcement being wound over the inner core and connected to the clamps.
Dependencies are inferred from the claim text.