An offshore contractor retained Orca Offshore to perform a full dynamic lift analysis for the Chevron Delta South Living Quarters platform
installation. The living quarters deck was installed on the existing Delta South Quarters platform at the Escravos field offshore of Nigeria.
The goal was to optimize the lift arrangement to improve its workability under extreme swell conditions.
MOSES was used to perform dynamic lift analysis, verification of shallow water effect, operability analysis, and shallow water mooring
analysis. To assess the operational hazard due to the small keel clearance, ANSYS CFX was used for computational fluid dynamic motion
analysis and multi-body dynamic lift analysis. The mooring analysis was also a challenge, since each line had about 12 midline buoys. Using
the proper analytical methods ensured the operation was safely executed.
The goal of this USD 1 million project was to increase the oil and gas production of an existing platform off the west coast of India. Oil and
Natural Gas Corporation Limited (ONGC) first had to enhance the load handling capacity of the platform with modifications to the topsides
facilities. The project included installation of a new 13-metric-ton crane on the platform, which involved deck modifications to accommodate
the pedestal and boom rest.
ONGC used SACS to perform the structural integrity assessment of the well platform jacket structure. Studying the structural response to
the proposed modifications allowed ONGC to design measures to improve the load carrying capacity, and thereby reduce risk and improve
safety. Using SACS saved significant time and effort, shortened the project duration, and reduced costs.
Oil and Natural Gas Company Limited | Mumbai, Maharashtra, India
Structural Integrity Assessment of a Well Platform Jacket Structure
Orca Offshore | Netherlands
Shallow Water Dynamic Lift and Mooring Analysis
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