| 摘要 |
A sliding sleeve opens with a deployed ball, the sleeve comprising: a housing (120) defining a first bore and defining a flow port (127) communicating the first bore outside the housing; an inner sleeve (130) defining a second bore and being movable axially inside the first bore from a closed position to an opened position relative to the flow port, the second bore having a transition shoulder (185) and an engagement shoulder (187) disposed therein; and a compressible seat (182) disposed in a first axial position in the second bore of the inner sleeve, the compressible seat in the first axial position having an expanded state and engaging the deployed plug (B), the compressible seat moving the inner sleeve axially open in response to fluid pressure applied against the engaged plug, the compressible seat shifting from the first axial position past the transition shoulder to a second axial position and contracting from the expanded state to a contracted state in response to the applied fluid pressure, the compressible seat transitioned to the contracted state compressing against the engaged plug. |
