Downhole apparatus and method

摘要

The present invention provides an apparatus and assembly for creating a seal in a wellbore around a cable or line. The assembly includes a longitudinal body (12) and a swellable portion (15) which comprises a material selected to increase in volume on exposure to at least one triggering fluid. The swellable portion (15) has a formation (18) open to the longitudinal surface which provides a pathway for a cable (22) or line to extend through the swellable portion (15), and an insert (24) of swellable material.