Invention Grant
- Patent Title: Retrievable high expansion bridge plug and packer with retractable anti-extrusion backup system
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Application No.: US17492290Application Date: 2021-10-01
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Publication No.: US11959352B2Publication Date: 2024-04-16
- Inventor: Michael Wilbert Mitchell
- Applicant: Weatherford Technology Holdings, LLC
- Applicant Address: US TX Houston
- Assignee: Weatherford Technology Holdings, LLC
- Current Assignee: Weatherford Technology Holdings, LLC
- Current Assignee Address: US TX Houston
- Agency: Booth Albanesi Schroeder PLLC
- Agent Peter V. Schroeder
- Main IPC: E21B33/12
- IPC: E21B33/12 ; E21B23/06

Abstract:
A packer assembly includes a packer mandrel and a packing element disposed about the packer mandrel. An upper recovery sleeve is disposed about the packer mandrel and extending between the packer mandrel and an upper end of the packing element, and a lower recovery sleeve is disposed about the packer mandrel and extending between the packer mandrel and a lower end of the packing element. An upper backup assembly is movably disposed about the upper recovery sleeve and adjacent to the upper end of the packing element. A lower backup assembly is movably disposed about the lower recovery sleeve. The lower backup assembly has a lower backup ring assembly configured to enclose an outer surface of the lower end of the packing element. A retrieval sleeve is selectively movable relative to the lower backup ring assembly and configured to at least partially retract the lower backup ring assembly.
Public/Granted literature
- US20220136358A1 Retrievable High Expansion Bridge Plug and Packer with Retractable Anti-Extrusion Backup System Public/Granted day:2022-05-05
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