Offshore pipeline construction. Part 2 (conclusion). A look at pipeline riser installation techniques
Journal Article
·
· Oil Gas J.; (United States)
OSTI ID:5754020
The installation of pipeline risers on offshore platforms is normally a separate operation from pipeline installation and is often performed by exclusive equipment. The conventional riser-installation method is the most commonly used for moderate water depths (up to 300 ft) and relatively calm seas (such as in the Gulf of Mexico). The pipeline is placed on the ocean floor close to the platform leg, then the end is raised to the surface via pickup cables spaced at intervals along the side of a supporting barge. This technique requires neither complicated fabrication nor sophisticated equipment. Other methods used include the guide-rail, standard J-tube, and bending-shoe. In the North Sea, however, where waters are deeper and the surface environment harsh, the preferred riser-installation technique is underwater joining by divers.
- OSTI ID:
- 5754020
- Journal Information:
- Oil Gas J.; (United States), Journal Name: Oil Gas J.; (United States) Vol. 79; ISSN OIGJA
- Country of Publication:
- United States
- Language:
- English
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