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(11) | EP 2 128 377 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Large bore packer |
| (57) A retrievable large bore packer (10) for providing an annular seal and an anchor
system in a well bore. Ports (14) are provided behind the slips (70) to prevent debris
build-up and allow the slips (70) to release. These ports (14), in a thin walled tubing
(12), allow the collapse of the tubing behind the slips to aid removal of the packer
if the sealing element (16) does not release. The slip arrangement is mounted entirely
above the sealing element (16) to remove the requirement to seal between the slips
and the inner bore of the packer. In this way the packer can have a large bore. Further
flow paths are provided through the packer above the seal to prevent debris build-up
above the sealing element.
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