Downhole sealing assembly with swellable seal
AssigneeSwellfix B.V.
InventorsGraeme McRobb, John Dewar
Life of this patent
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Abstract
A downhole sealing assembly comprises a sleeve adapted to be mounted on a tubular body disposable within a bore, the sleeve (12) including a swellable material and defining a sealing arrangement comprising inner and outer seals. Swelling of the material radially extends the inner seal into contact with the tubular body and extends the outer seal into contact with the bore. seals.
Claims48
A downhole sealing assembly comprising a sleeve adapted to be mounted on a tubular body disposable within a bore, the sleeve including a swellable sealing arrangement comprising a swellable material and inner and outer seals, whereby swelling of the material radially inwardly extends the inner seal to establish a seal between the sleeve and the tubular body and radially outwardly extends the outer seal to establish a seal between the sleeve and a wall of the bore.
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A downhole sealing assembly comprising:
- a sleeve adapted to be mounted on a tubular body disposable within a bore;
- an outer seal on an outer surface of the sleeve;
- and
- an inner seal on an inner surface of the sleeve, wherein the outer and inner seals are joined together and comprise a swellable material,
- whereby swelling of the swellable material radially inwardly extends the inner seal to establish a seal between the sleeve and the tubular body and radially outwardly extends the outer seal to establish a seal between the sleeve and a wall of the bore.
A method of providing a downhole seal, the method comprising:
- mounting a sleeve on a tubular body, wherein the sleeve comprises a sealing arrangement having an outer seal and an inner seal and the inner and outer seals comprise a swellable material;
- running the body downhole into a bore;
- activating the outer seal to swell to radially outwardly extend and to form a seal between the sleeve and a wall of the bore;
- and
- activating the inner seal to swell to radially inwardly extend and to form a seal between the sleeve and the body.
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Dependencies are inferred from the claim text.