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US 7,063,485 B2Granted
Top tensioned riser
AssigneeSeahorse Equipment Corp
InventorsTravis R. Jordan, Jeffrey D. Otten, Kent B. Davies
Life of this patent
Estimating the term…
Abstract
A top tensioned riser extends substantially vertically from a platform hull to the seabottom. The riser includes length adjustment at its upper end and is detachably connected to an anchor pile at its lower end. Riser tension is monitored via load cells incorporated in the riser porch. The riser is connected to one or more import/export flowlines or pipelines.
Claims20
A flowline riser, comprising:
- a) a plurality of riser joints connected end-to-end forming said riser;
- b) said riser including an upper joint adapted for connection to a platform hull and a lower joint adapted for connection to an anchor pile embedded in a seabed;
- c) said upper joint including a length adjustment section for adjusting the length and tension of said riser;
- and
- d) wherein said riser extends substantially vertically between said platform hull and said anchor pile.
2 more elements
A riser installation, comprising:
- a) a riser flowline secured substantially vertically between a floating platform and anchor means embedded in a seabed;
- b) said riser flowline including an upper joint adapted for connection to said platform and a lower joint adapted for connection to said anchor means;
- c) said upper joint including a length adjustment section for adjusting the length and tension of said riser flowline;
- and
- d) a flowline jumper establishing fluid communication between said riser flowline and a remote fluid source.
2 more elements
A method of installing a flowline riser, comprising the steps of:
- a) forming said riser by joining riser joints end-to-end;
- a) connecting a lower end of said riser to anchor means pre-installed in a seabed;
- b) supporting said riser in a substantially vertical position;
- c) attaching an upper end of said riser to a floating platform;
- d) adjusting the length and tension of said riser;
- e) locking off said riser;
- f) connecting said riser to platform piping;
- and
- g) establishing fluid communication between said riser and a remote fluid source.
6 more elements
Dependencies are inferred from the claim text.