TENSION RELEASE PACKER FOR A BOTTOMHOLE ASSEMBLY

摘要

A resettable elastomeric packer element of a packer, compressed for sealing in a wellbore, is released from sealing engagement in the wellbore by applying tension to an end of the packer element. The elastomeric packer element stretches and releases from the wellbore forming an annular passageway between the packer element and the wellbore. In the absence of a pressure equalization valve or flow passages through the packer, the annular passageway equalizes pressure differentials across the packer element allowing a tool, in which the packer is incorporated, to be moved in the wellbore with little or no damage to the packer element and further, allows debris to flow from above the packer to below the packer.

主权项

1. A method for completing a wellbore comprising:
running a completion tool, having a releasable packer therein, into the wellbore, the releasable packer having
an elastomeric, annular sealing element; andanchoring means for anchoring the sealing element in the wellbore; locating the sealing element below a zone of interest in the wellbore; axially compressing the elastomeric sealing element into sealing engagement with the wellbore and actuating the anchoring means; treating the zone of interest above the elastomeric sealing element and thereafter; and releasing the packer from sealing engagement with the wellbore by applying axial tension to the elastomeric sealing element for forming an annular passageway between the elastomeric sealing element and the wellbore to equalize pressure thereabove with pressure therebelow.