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US 11,142,986 B2Granted
Isolation assembly
AssigneeSchlumberger Technology Corporation
InventorsMariano Sanchez, Isaac Aviles Cadena, Afou Keshishian
Life of this patent
Estimating the term…
Abstract
An apparatus that is usable with a well includes a tubular assembly and an expansion tool. The tubular assembly has a radially contracted state and includes a restriction. The restriction is adapted to catch an object that is deployed into the well to form a fluid barrier when caught by the restriction. The expansion tool is deployed downhole with the tubular assembly inside a tubing string. The expansion tool is adapted to deform the tubular assembly to anchor the tubular assembly to the tubing string.
Claims21
A method comprising:
- deploying an isolation assembly into a tubing string previously installed in a well,
- wherein the isolation assembly comprises a sleeve that is coaxial with a longitudinal axis of the isolation assembly, and
- wherein the sleeve comprises:
- an expanded section;
- a contraction section;
- and a restriction;
- deforming the contraction section of the sleeve at a downhole location in the well to secure the isolation assembly to the tubing string,
- wherein deforming the contraction section of the sleeve comprises radially expanding the contraction section of the sleeve of the isolation assembly in an uphole direction to cause an anchor member of the isolation assembly to radially extend to engage the tubing string, and
- wherein, prior to deforming the contraction section of the sleeve, the anchor member of the isolation assembly does not engage the tubing string;
- receiving an object in the restriction of the sleeve after radially expanding the contraction section of the sleeve;
- and
- using the received object to perform a downhole operation as the sleeve remains in the well.
9 more elements
An apparatus usable with a well, comprising:
- a tubular assembly having a radially contracted state, the tubular assembly comprising:
- a sleeve;
- and a restriction adapted to catch an object deployed into the well to form a fluid barrier when caught by the restriction;
- and
- an expansion tool to be deployed downhole with the tubular assembly inside a tubing string, the expansion tool being adapted to radially expand the sleeve of the tubular assembly inside the tubing string in an uphole direction to anchor the expanded sleeve to the tubing string via at least one anchoring member disposed on an exterior of the sleeve,
- wherein the at least one anchoring member does not engage the tubing string prior to radial expansion of the sleeve of the tubular assembly, and
- wherein the restriction is adapted to catch the object deployed into the well after radial expansion of the sleeve and removal of the expansion tool.
4 more elements
A system usable with a well, comprising:
- a casing string to support a wellbore, wherein the casing string has a central passageway and the wellbore has multiple stages;
- an isolation assembly to be deployed in the central passageway of the casing string to form an isolation barrier for a given stage of the multiple stages, the isolation assembly comprising:
- a tubular assembly having a radially contracted state, the tubular assembly comprising a restriction adapted to catch an object deployed into the well to form a fluid barrier when caught by the restriction,
- wherein, in the radially contracted state, the tubular assembly comprises an expanded section and a contracted section;
- and
- at least one anchor member;
- an expansion tool to be deployed downhole with the tubular assembly inside a tubing string;
- and
- a conveyance mechanism to deploy the expansion tool and the tubular assembly downhole,
- wherein the expansion tool is adapted to be drawn through the tubular assembly using the conveyance mechanism to deform the contracted section of the tubular assembly to radially expand the tubular assembly in an uphole direction inside the tubing string to anchor the expanded tubular assembly to the tubing string via the at least one anchor member,
- wherein the at least one anchor member of the isolation assembly does not engage the tubing string prior to usage of the conveyance mechanism and the expansion tool, and
- wherein the restriction is adapted to catch the object deployed into the well after radial expansion of the tubular assembly and removal of the expansion tool.
9 more elements
Dependencies are inferred from the claim text.