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US 12,584,367 B2Granted
Multi-level slip hanger
AssigneeBaker Hughes Oilfield Operations LLC
InventorDmitriy Shamov
Life of this patent
Estimating the term…
Abstract
A casing hanger and seal system for supporting a casing string in a hydrocarbon well. The hanger can have a deformable seal with an ability to transfer force through the seal to a lower portion of the hanger. The hanger can have multiple slips which engage a casing wall and support an upper casing string independent from the deformable seal such that changes in the forces being supported cannot disengage the seal when positioned.
Claims13
A casing hanger system comprising:
- a casing hanger comprising:
- upper slips supported out of contact from a casing when in a pre-deployed condition, and in supporting engagement with a casing string when in a deployed condition;
- lower slips supported out of contact from the casing when in a pre-deployed condition, and in supporting engagement with a casing string when in a deployed condition;
- at least one load transfer bolt connecting the upper slips to the lower slips;
- and
- a compressible seal positioned between the upper slips and the lower slips;
- wherein a support for the upper slips and a support of the lower slips is selected from the group consisting of at least one holding screw and a shear ring.
4 more elements
Dependencies are inferred from the claim text.