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

Claim 10:
11. A method of manipulating a packing element in a bore, comprising:
providing an upper recovery sleeve having an upper recovery profile embedded within the packing element;
providing a lower recovery sleeve having a lower recovery profile embedded within the packing element;
moving an upper backup assembly with respect to the upper recovery sleeve toward an upper end of the packing element;
moving a lower backup assembly with respect to the lower recovery sleeve toward a lower end of the packing element, the lower backup assembly having a lower backup ring enclosing an outer surface of the lower end of the packing element;
reducing an axial distance between the upper backup assembly and the lower backup assembly, thereby axially compressing the packing element;
deforming the packing element into contact with a surrounding wall of the bore and causing the lower backup ring to splay outward along the outer surface of a lower end of the packing element; and thereafter
increasing the axial distance between the upper recovery sleeve and the lower recovery sleeve, and releasing the packer element from the surrounding wall; and
at least partially retracting the splayed outward lower backup ring by moving a retrieval sleeve relative to the lower backup ring.