Swellable casing anchor
AssigneeTam International, Inc.
InventorsTim DAVIS, Art LOGINOV, Ray FRISBY
Life of this patent
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Abstract
A method for anchoring a casing string within a wellbore is disclosed. The method includes providing a casing string, where the casing string being generally tubular, and coupling a swellable elastomeric material on at least a portion of the exterior of the casing string. In addition, the method includes positioning the casing string within a wellbore, exposing the swellable elastomeric material to a swelling fluid, and sealing the swellable elastomeric material to the wellbore.
Claims37
A method for anchoring a casing string within a wellbore, the method comprising:
- providing a casing string, the casing string being generally tubular;
- coupling a swellable elastomeric material on at least a portion of the exterior of the casing string;
- positioning the casing string within a wellbore;
- exposing the swellable elastomeric material to a swelling fluid;
- and
- sealing the swellable elastomeric material to the wellbore.
A method for anchoring a casing string within a wellbore, the method comprising:
- providing a first casing tubular, the first casing tubular including a first generally tubular mandrel and a first swellable packer element positioned on the outside surface of the first casing tubular;
- coupling the first casing tubular to a casing tubular string;
- positioning the casing tubular string within a wellbore;
- exposing the first swellable packer element to a swelling fluid;
- and
- sealing the first swellable packer element to the wellbore.
A casing string for use in a wellbore, the casing string comprising:
- a plurality of casing tubulars, the plurality of casing tubulars coupled end to end to form the casing string;
- and
- a swellable elastomeric material coupled to the exterior of at least a portion of the plurality of casing tubulars, the swellable elastomeric material formed by a plurality of swellable packer elements, the swellable elastomeric material positioned to expand when exposed to a swelling fluid, the swellable elastomeric material adapted to, when expanded, contact the wellbore and exert a normal force thereagainst, the normal force providing a frictional force between the swellable elastomeric material and the wellbore sufficient to resist movement of the casing string within the wellbore caused by fluid pressure within the wellbore.
Dependencies are inferred from the claim text.