Ultra Deepwater Reel and Flexible Pipelay Vessel for Pre-Salt Field Developments
- Erik Christiani (EMAS AMC)
- Document ID
- Offshore Technology Conference
- Offshore Technology Conference, 05-08 May, Houston, Texas
- Publication Date
- Document Type
- Conference Paper
- 2014. Offshore Technology Conference
- 4 Facilities Design, Construction and Operation, 4.2 Pipelines, Flowlines and Risers, 4.5.7 Controls and Umbilicals, 4.5 Offshore Facilities and Subsea Systems
- flexible pipe, Installation, pipelay, Deepwater, reel lay
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Reeled & flexible pipelay has normally been utilized in fully developed and matured offshore oil and gas field areas with close proximity to onshore support, onshore logistics and short offshore transit distances to onshore spoolbases for loading the pipeline stalks or flexibles onto the reels. This is normally an activity that requires comprehensive planning both onshore and offshore and is often on the critical path of the overall pipelay campaign.
New discoveries in remote locations such as the Gulf of Mexico deep water field developments often have long transit times from established spoolbases and port facilities, hence rendering certain reeled-lay scenarios uneconomical. This paper will discuss the advantage of the next generation of pipelay vessel suitable for remote offshore locations in hostile environment. This new generation of multi-lay vessels utilizes portable reels to eliminate critical path activities at the spool-base, which often causes delays and other problems. In addition to this, these vessels, when configured correctly, allow installation of in-line structures conveniently and safely together with integrated touch down monitoring. As a bi-product or complement to the portable reels, these vessels also feature significant offshore lifting capabilities, which further enhance their flexibility as a full field development vessel. In addition flexible and umbilical products can be combined with-in the pipelay vessel on the vertical reels or the carousels with-in the pipelay vessel hull, i.e. avoiding multiple vessel mobilizations for a reeled and flexible pipelay campaign.
Traditional deepwater pipelay vessel types will be compared to the multipurpose reeled and flexible lay vessel with and without onshore facilities and logistical infrastructure support close by. This will validate the robustness of installing deepwater pipelines and flexibles in remote locations using this new type of reeled pipelay vessel.
|File Size||5 MB||Number of Pages||11|