Wellbore packer, method and tubing string
AssigneePackers Plus Energy Services Inc.
InventorDANIEL JON THEMIG
Life of this patent
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Abstract
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.
Claims24
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.
An apparatus for fluid treatment in a wellbore, the apparatus comprising:
- a tubing string having a long axis and including a wall portion defining an inner bore therein;
- a first packer operable to seal about the tubing string and mounted on the tubing string;
- a second packer operable to seal about the tubing string and mounted on the tubing string in a position axially offset along the tubing string from the first packer;
- and
- a packer setting mechanism for selectively operating sequentially the first packer and the second packer toward setting.
A method for securing a tubing string in a wellbore, the method comprising:
- running a tubing string into the wellbore, wherein the tubing string includes a long axis, a wall portion defining an inner bore;
- a first packer operable to seal about the tubing string and mounted on the tubing string;
- a second packer operable to seal about the tubing string and mounted on the tubing string in a position axially offset along the tubing string from the first packer;
- positioning the tubing string in the wellbore forming an annulus between the tubing string and a wall of the wellbore;
- and
- selectively operating the first packer and the second packer sequentially by application of annular fluid pressure.
Dependencies are inferred from the claim text.