PL19-3 Oil Field Jacket Design and Development of “Fixed Offshore Structure Design Tool” Software

Project

 

Located in Bohai Bay off China's northeastern coast, the CNY 8.8 billion Bohai Development Project is a joint venture between China National Offshore Oil Corporation (CNOOC) and ConocoPhillips China Inc. The project will expand existing facilities to include two 40-slot well head platforms, a central platform, and associated pipelines and cables. As engineering, procurement, construction, and installation (EPCI) contractor, CNOOC Offshore Oil Engineering Co., Ltd. (COOEC) was charged with creating detailed designs of the offshore structures and developing engineering software.

 

Solution

 

Designing the platforms involved complex modeling using SACS offshore structural analysis and design software, and MOSES for integrated offshore simulation. To simplify data exchange, manage project data, and automate repetitive tasks, COOEC developed the Fixed Offshore Structure Design Tool (FOSDT) as an interface to Bentley's software. COOEC's intelligent design capability enabled the team to quickly adjust analysis models according to changing parameters and arrive at optimal solutions.

 

Outcome

 

COOEC's custom application provided an integrated design system that maximized the use of Bentley software. By providing a new way to manage the project database, FOSDT improved performance and guaranteed project progress. As a result, the team designed the three jackets simultaneously with an error rate of less than 0.5 percent, saving 2,000 resource hours and CNY 400,000 in costs. With Bentley software, COOEC completed the detail design of the platforms within seven months, and delivered the project four weeks ahead of schedule.