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US 10,502,055 B2Granted
Systems and methods for an expandable packer
AssigneeSchlumberger Technology Corporation
InventorsPierre-Yves Corre, Lambert Rouchon, Stéphane Metayer, Julien Lassalle
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Abstract
The present disclosure relates to a downhole packer assembly that includes an outer skin, an inner packer disposed within the outer skin such that inflation of the inner packer is configured to expand the outer skin, a pair of mechanical fittings engaged with axial ends of the outer skin, and a ring assembly disposed within at least one of the pair of mechanical fittings. The ring assembly includes a shear pin configured to shear upon application of a tensile force to the downhole packer assembly.
Claims15
A downhole packer assembly, comprising:
- an outer skin;
- an inner packer disposed within the outer skin such that inflation of the inner packer is configured to expand the outer skin;
- a pair of mechanical fittings engaged with axial ends of the outer skin;
- and
- a ring assembly disposed within at least one of the pair of mechanical fittings, wherein the ring assembly comprises a shear pin configured to shear upon application of a tensile force to the downhole packer assembly, wherein at least one of the pair of mechanical fittings is configured to cover a sampling port of the downhole packer assembly in a first axial position, wherein the at least one of the pair of mechanical fittings is configured to expose the sampling port of the downhole packer assembly in a second axial position after shearing of the shear pin, and wherein the inner packer is configured to deflate in response to the sampling port being exposed.
2 more elements
A method, comprising:
- providing a packer assembly having an inner packer disposed within an outer skin, a pair of mechanical fittings engaged with axial ends of the outer skin, and a ring assembly disposed within at least one of the pair of mechanical fittings, wherein the ring assembly comprises a shear pin;
- positioning the packer assembly in a wellbore;
- inflating the inner packer until the outer skin seals against a wall of the wellbore;
- applying a tensile force to the packer assembly;
- shearing the shear pin;
- and
- axially moving at least one of the pair of mechanical fittings from a first axial position to a second axial position in response to shearing the shear pin, wherein a sampling port of the packer assembly is configured to be covered when the at least one of the pair of mechanical fittings is in the first axial position, wherein the sampling port of the packer assembly is configured to be exposed when the at least one of the pair of mechanical fittings is in the second axial position, and wherein the inner packer is deflated in response to the sampling port being exposed.
4 more elements
Dependencies are inferred from the claim text.