| 摘要 |
A sliding sleeve (100) opens with a deployed ball (B). The sleeve comprising:a housing (1210) 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 from a closed position to an opened position inside the first bore relative to the flow port; an inner-facing surface (169) disposed in the second bore and inclined from a proximal end toward a distal end of the inner sleeve; and a seat (160) disposed in the second bore of the inner sleeve and being movable axially from a first axial position toward a second axial position therein, the seat having a plurality of segments (164) having inclined surfaces adapted to engage the inner-facing surface, the segments on the seat in the first axial position being expanded outward from one another and engaging the deployed plug, the segments on the seat moved toward the second axial position being contracted inward by engagement of the inclined surfaces with the inner-facing surface and wedging against the engaged plug, the seat moving the inner sleeve axially to the opened position in response to fluid pressure applied against the engaged plug. |
