| 摘要 |
A wellbore servicing apparatus comprising a housing substantially defining an axial flowbore and comprising one or more ports, an expandable seat, and a sliding sleeve slidably fitted within the housing, the sliding sleeve being transitional from a first position to a second position and from the second position to a third position, wherein, in the first position, the sliding sleeve does not permit fluid communication via the one or more ports and the expandable seat is retained in a narrower, non-expanded conformation, wherein, in the second position, the sliding sleeve permits fluid communication via the one or more ports and the expandable seat is retained in a narrower, non-expanded conformation, and wherein, in the third position, the sliding sleeve does not permit fluid communication via the one or more ports and the expandable seat is allowed to expand into a wider, expanded conformation. |
