WELLBORE PACKER, METHOD AND TUBING STRING

摘要

A wellbore packer for setting one or more packing elements in a borehole having an open hole section. The wellbore packer comprises a port-less mandrel configured with one or more packing elements and one or more setting mechanisms. The setting mechanism is responsive to a driving force and configured to set the packing elements in the borehole, wherein the driving force is not tubing string pressure. Where packers are set by annular pressure, a method for setting a plurality of such packers may include sequentially operating the packers. A mechanism may be provided for the packers to allow sequential operation thereof.

主权项

1. A method for setting a plurality of packers on a wellbore string, the method comprising:
operating a first wellbore packer by exposing a mechanism of the first wellbore packer to annular pressure; and delaying the setting of a second wellbore packer that is axially spaced along the wellbore string from the first wellbore packer until after operating the first wellbore packer.