Patent ID: 9670751
Date: 2017-06-06
CPC Classifications: E21B

Claim:
1. A sliding sleeve operating with a deployed plug and applied pressure and being subjected to reverse flow pressure, the sleeve comprising: a housing defining a first bore therethrough; an insert disposed in the first bore of the housing and having a second bore therethrough; and a seat held in a first direction in the second bore of the insert, the seat engaging the deployed plug in the first direction, the insert moving, by the applied pressure against the engaged plug in the seat, in the first direction inside the first bore from a first condition toward a second condition, the seat disengaging and moving, by the reverse flow pressure, from the second bore of the insert in a second direction opposite to the first direction, the seat comprising at least one seal disposed thereon for sealing with surrounding surfaces, including at least the second bore of the insert and the first bore of the housing, during the movement of the seat by the reverse flow pressure.