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US 2016/0251931 A1Published application
Riserless completions
AssigneeShell Oil Company
InventorsColin Stuart BUCHAN, Geoffrey David CANNON, David William STEWART
Life of this patent
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Abstract
A downhole barrier system comprising: a wellbore; an upper packer; upper barrier valve; a pressure sensor; a ported sub; a lower packer; a lower pack flow port sliding sleeve; and a lower barrier valve.
Claims20
A downhole barrier system comprising:
- a wellbore;
- an upper packer;
- upper barrier valve;
- a pressure sensor;
- a ported sub;
- a lower packer;
- a lower pack sliding sleeve;
- and
- a lower barrier valve.
6 more elements
An isolated wellbore system comprising:
- a well bore;
- a downhole barrier positioned within the wellbore;
- a suspension plug installed near the top of the wellbore at a well head;
- and
- a subsea isolation device.
2 more elements
A method comprising:
- providing a well system comprising a well bore, a casing, and a blowout preventer;
- placing a barrier within the wellbore;
- installing a suspension plug at a top of the well bore;
- removing the blowout preventer;
- installing an isolation device at the top of the wellbore;
- removing the suspension plug;
- installing an upper completion;
- installing a tubing hanger plug;
- recovering the subsea isolation device;
- installing a Christmas tree;
- recovering the suspension plug;
- and
- installing the Christmas tree cap.
10 more elements
Dependencies are inferred from the claim text.