Riser gas handling system and method of use
OwnerAlan Murray Clark, Alan John Reid +2inventors
InventorsAlan Murray Clark, Alan John Reid, Ian McQueen Allan, Graham Paterson Birkett
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Abstract
The invention provides a system for handling gas in a riser. The system comprises a riser flow spool, a riser isolation device and an upper riser disconnect assembly wherein at least the riser flow spool is connected to the riser below a riser tension ring and the upper riser disconnect assembly is located above the riser tension ring.
Claims65
A riser assembly comprising:
- a riser flow spool;
- a riser isolation device and
- an upper riser disconnect assembly;
- wherein at least the riser flow spool is located on a riser below a riser tension ring and wherein the upper riser disconnect assembly is located above the riser tension ring.
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A method of installing a riser gas handling system in a subsea riser comprising:
- installing a riser flow spool assembly on the riser below the tension ring;
- and
- installing an upper riser disconnect assembly above the tension ring.
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A method of handling riser gas in a subsea riser comprising:
- providing a riser assembly comprising:
- a riser flow spool;
- a riser isolation device and
- an upper riser disconnect assembly;
- wherein the riser flow spool is located on a riser below a riser tension ring and wherein the upper riser disconnect assembly is located above the riser tension ring;
- actuating the riser isolation device to close the riser above the riser flow spool and actuating the riser flow spool to divert gas trapped below the riser isolation device.
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A method of installing a rotary control device in a riser with riser gas handling comprising:
- providing a riser assembly comprising
- a riser flow spool;
- a riser isolation device;
- and
- an upper riser disconnect assembly;
- wherein at least the riser flow spool is connected to the riser below a riser tension ring and wherein the upper riser disconnect assembly is connected to the riser above the tension ring;
- and
- connecting a rotary control device to the upper riser disconnect assembly.
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Dependencies are inferred from the claim text.