Layout assessment of steel catenary riser for deep-draft SEMI in South China Sea

Lusheng Jia; Xu Jia; Yi Liu

doi:10.1117/12.2644716

14 November 2022 Layout assessment of steel catenary riser for deep-draft SEMI in South China Sea

Lusheng Jia, Xu Jia, Yi Liu

Proceedings Volume 12299, International Conference on Sustainable Technology and Management (ICSTM 2022); 1229904 (2022) https://doi.org/10.1117/12.2644716
Event: International Conference on Sustainable Technology and Management (ICSTM 2022), 2022, Macao, China

Abstract

The free hanging Steel Catenary Riser (SCR) has been widely used in deep water oil and gas field development, due to its economic efficiency and ease of installation. LingShui 17-2 gas field development project is the first attempt for CNOOC to utilize Deep Draft SEMI and SCR system at 1500m water depth. Layout of two 12-inch production risers has been analyzed to evaluate the safety risk impact of risers on Living Quarters. Results show that when risers are hanging the west side pontoon of the SEMI, the resulting frequency of impairment is significantly lower for the case with risers on the west side of the platform. In numbers, the estimated annual impairment of LQ due to riser fire is 2.3E-5 and 2.6E- 7, respectively for east-mounted and west-mounted risers. Considering the two 12-inch production risers to be hung off on the east pontoon, the total annual frequency for impairment of LQ would be 3.2E-5, which is still lower than the normally acceptable criteria. Relevant empirical practices can provide reference for the layout design of SCR for other deep-water development projects in South China Sea.

Citation Download Citation

Lusheng Jia, Xu Jia, and Yi Liu "Layout assessment of steel catenary riser for deep-draft SEMI in South China Sea", Proc. SPIE 12299, International Conference on Sustainable Technology and Management (ICSTM 2022), 1229904 (14 November 2022); https://doi.org/10.1117/12.2644716

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