Method for the assisted installation of an underwater riser
US-9217517-B2 · Dec 22, 2015 · US
Hybrid riser tower and methods of installing same
US8998539B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8998539-B2 |
| Application number | US-201213460777-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 30, 2012 |
| Priority date | Nov 8, 2006 |
| Publication date | Apr 7, 2015 |
| Grant date | Apr 7, 2015 |
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Abstract
Official abstract text for this publication.
Disclosed is a riser including a plurality of pipelines. In one example there are three such pipelines extending from the seabed toward the surface and having an upper end supported at a depth below the sea surface. In one embodiment, a first of the pipelines acts as a central structural core, and the other pipelines are arranged around the first pipeline. In another embodiment, three pipelines are arranged around a structural core. In each case, the first of the pipelines can be a fluid injection line, and the other pipelines are production lines. Also disclosed is a riser having buoyancy along at least a part of its length. The buoyancy results in the riser having a generally circular cross-section, the circumference of which is non-contiguous. Methods of installing such risers are also described.
First claim
Opening claim text (preview).
The invention claimed is: 1. A riser system comprising a plurality of conduits extending in use from a seabed toward a sea surface and having an upper end supported at a depth below the sea surface, the plurality of conduits forming a riser bundle and the riser system further comprising a central structural core, wherein said riser system further comprises a plurality of guide frames adapted to guide the plurality of conduits and spaced at intervals around at least a part of a leng…
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Fixed Constructions · mapped topic
- E21B17/012Primary
Fixed Constructions · mapped topic
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- What does patent US8998539B2 cover?
- Disclosed is a riser including a plurality of pipelines. In one example there are three such pipelines extending from the seabed toward the surface and having an upper end supported at a depth below the sea surface. In one embodiment, a first of the pipelines acts as a central structural core, and the other pipelines are arranged around the first pipeline. In another embodiment, three pipelines…
- Who is the assignee on this patent?
- Saint-Marcoux Jean-Francois, De-Roux Gregoire, Branchut Jean-Pierre, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification E21B17/012. Mapped technology areas include Fixed Constructions.
- When was this patent published?
- Publication date Tue Apr 07 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).