Back to results
US 10,370,932 B2Granted
Systems and methods for retraction assembly
AssigneeSchlumberger Technology Corporation
InventorsLambert Rouchon, Pierre-Yves Corre
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to a downhole packer assembly that includes an outer skin, an inner packer disposed within the outer skin such that inflation of the inner packer is configured to expand the outer skin, an end support coupled to an outer skin end and an inner packer end, a retraction assembly coupled to the end support via a plurality of connecting members, and a plurality of chambers disposed within the retraction assembly. The plurality of connecting members are at least partially disposed within the plurality of chambers.
Claims14
A downhole packer assembly, comprising:
- an outer skin;
- an inner packer disposed within the outer skin such that inflation of the inner packer is configured to expand the outer skin;
- an end support coupled to an outer skin end and an inner packer end;
- a retraction assembly coupled to the end support via a plurality of connecting members;
- and
- a plurality of chambers disposed within the retraction assembly, wherein the plurality of connecting members are at least partially disposed within the plurality of chambers;
- wherein the end support comprises an end support seal configured to block exchange of fluids with an inner bladder chamber, and the retraction assembly comprises a plurality of retraction assembly seals configured to block exchange of fluids with the plurality of chambers;
- a plurality of ports disposed within the retraction assembly and fluidly coupled to the plurality of chambers, wherein the plurality of ports are configured to enable adjustment of pressures within the plurality of chambers;
- and
- a plurality of plugs disposed within the plurality of ports, wherein the plurality of plugs are configured to seal the plurality of chambers after adjustment of the pressures within the plurality of chambers.
7 more elements
A method, comprising:
- providing a packer assembly having an inner packer disposed within an outer skin, an end support coupled to an outer skin end and an inner packer end, a retraction assembly coupled to the end support via a plurality of connecting members, and a plurality of chambers disposed within the retraction assembly, wherein the plurality of connecting members are at least partially disposed within the plurality of chambers;
- positioning the packer assembly in a wellbore;
- inflating the inner packer until the outer skin seals against walls of the wellbore, wherein inflating comprises moving the end support in a first direction such that volumes of the plurality of chambers increase thereby exerting retraction forces on the plurality of connecting members;
- deflating the inner packer;
- and
- retracting the outer skin and the inner packer using the retraction assembly, wherein retracting comprises moving the end support in a second direction opposite from the first direction via the retraction forces such that volumes of the plurality of chambers decrease.
3 more elements
A downhole packer assembly, comprising:
- an outer skin;
- an inner packer disposed within the outer skin such that inflation of the inner packer is configured to expand the outer skin;
- an end support coupled to an outer skin end and an inner packer end;
- a retraction assembly coupled to the end support via a plurality of connecting members;
- a plurality of chambers disposed within the retraction assembly, wherein the plurality of connecting members are at least partially disposed within the plurality of chambers;
- a plurality of ports disposed within the retraction assembly and fluidly coupled to the plurality of chambers, wherein the plurality of ports are configured to enable adjustment of pressures within the plurality of chambers;
- and
- a plurality of plugs disposed within the plurality of ports, wherein the plurality of plugs are configured to seal the plurality of chambers after adjustment of the pressures within the plurality of chambers.
5 more elements
Dependencies are inferred from the claim text.