Patent ID: 11959352
Assignee: WEATHERFORD TECHNOLOGY HOLDINGS, LLC
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 18:
19. A retrievable downhole tool comprising:
a central mandrel;
a slip assembly disposed about the central mandrel; and
a packer assembly disposed about the central mandrel, the packer assembly comprising:
a packer mandrel;
a packing element disposed about the packer mandrel and movable between a first position and a radially expanded, axially shortened, second position;
an upper recovery sleeve disposed about the packer mandrel and extending between the packer mandrel and an upper end of the packing element;
an upper backup assembly movably disposed about the upper recovery sleeve and adjacent to the upper end of the packing element;
a lower recovery sleeve disposed about the packer mandrel and extending between the packer mandrel and a lower end of the packing element;
a lower backup assembly movably disposed about the lower recovery sleeve, the lower backup assembly having a lower backup ring assembly configured to move from a first position wherein the lower backup ring encloses an outer surface of the lower end of the packing element, to a second position wherein the lower backup ring is splayed outwardly at the lower end of the packing element; and
a retrieval sleeve selectively movable relative to the lower backup ring assembly and configured to at least partially retract the lower backup ring assembly from the splayed outward second position.