Multiple expandable metal packers with hydrolock prevention
AssigneeSchlumberger Technology Corporation
InventorsSamuel Roselier, Romain Neveu, Robin Laupie, Nicolas Saltel, Dinesh Patel
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Abstract
A technique facilitates improved actuation and use of packers disposed along a well string and placed in a borehole, e.g. a wellbore. A plurality of packers may be disposed along a base pipe, e.g. a production tubing. Each packer has an expandable sleeve which may be expanded into a fully expanded configuration establishing a secure, sealing engagement with a surrounding wall. e.g. a surrounding wellbore wall. Additionally, a hydrolock prevention valve system comprises a valve which may be actuated to allow or block the flow of fluid from an annular region or regions between the packers.
Claims11
A system for use in a well, comprising:
- a well string size for deployment in a wellbore, the well string comprising:
- a base pipe;
- a plurality of packers disposed along the base pipe, each packer having an expandable metal sleeve which may be expanded into a fully expanded configuration forming a secure, sealing engagement with a surrounding wall;
- an annular space between packers of the plurality of packers;
- and
- a hydrolock prevention valve system having a valve, a flow passage between the annular space and an annular section outside of the plurality of packers, the valve being actuatable to allow or block flow between the annular space and an annular section outside of the plurality of packers.
Dependencies are inferred from the claim text.