| 摘要 |
A method for sealing a side pocket of a downhole mandrel in a tubing string comprises retrieving a cartridge component from the side pocket of the downhole mandrel and then deploying a sealing insert into the side pocket of the downhole mandrel, wherein the sealing insert comprises a swellable sealing element on an outer surface thereof. The swellable sealing element swells to provide a seal within the side pocket. A sealing insert for use in sealing a side pocket of a downhole mandrel, includes a base member and a swellable sealing element mounted on the outer surface of the base member and configured to swell when exposed to an activator. The sealing insert is geometrically configured to permit insertion within a side pocket of a downhole mandrel such that when the sealing element is swollen the sealing element provides a seal within said side pocket. |
