Downhole patch
AssigneeWelltec A/S
InventorAndreas LØVGREN
Life of this patent
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Abstract
The invention relates to a downhole patch comprising a tubular body having an upstream end, a downstream end, and an intermediate section extending from the downstream end to the upstream end, wherein the intermediate section has an exterior surface comprising a helical structure configured to guide fluid along the length of the intermediate section. The invention also relates to a method for patching a downhole structure.
Claims14
A downhole patch, comprising a tubular body having an upstream end, a downstream end, and an intermediate section extending from the downstream end to the upstream end,
- wherein the intermediate section has an exterior surface comprising a helical structure configured to guide fluid along the length of the intermediate section, wherein at least one of the upstream end and the downstream end comprises a radial seal portion.
A method for patching a downhole structure, comprising:
- arranging a patch radially outwards of a packer assembly downhole,
- initiating expansion of at least one expandable tubular of the packer assembly, thereby causing a corresponding expansion of the patch, and
- continuing expansion of the patch such that the patch expands radially into contact with a surrounding structure, while simultaneously guiding fluid present between the patch and the surrounding structure along the patch via a helical structure of the patch and through at least one longitudinal end of the patch.
Dependencies are inferred from the claim text.