| 摘要 |
<p>A downhole apparatus 14 and a support assembly 18 therefor is described. The downhole apparatus, such as a packer, has a radially expanding portion 26 comprising a swellable elastomeric material selected to increase in volume on exposure to at least one predetermined fluid. The expanding portion may be a ring. The support assembly is operable to be deployed from a first retracted position (fig 2) to a second expanded condition (fig 11) in which it at least partially covers an end of the radially expanding portion of the apparatus. The support assembly comprises an inner surface 32 arranged to face the radially expanding portion, wherein at least a portion of this surface is concave.</p> |
