On mechanical and mathematical models in Yanbin Wang et al.‘s six papers on mechanical analysis of marine riser

Abstract

This paper analyses the mechanical and mathematical models in Yanbin Wang et al.‘s six papers on mechanical analysis of marine riser: “Wang, Yanbin, Gao, Deli, Fang, Jun 2014. Static analysis of deep-water marine riser subjected to both axial and lateral forces in its installation. J. Nat. Gas Sci. Eng. 19, 84–90”, “Wang, Yanbin, Gao, Deli, Fang, Jun 2014. Axial dynamic analysis of marine riser in installation. J. Nat. Gas Sci. Eng. 21, 112–117”, “Wang, Yanbin, Gao, Deli, Fang, Jun 2015. Coupled dynamic analysis of deepwater drilling riser under combined forcing and parametric excitation. J. Nat. Gas Sci. Eng. 27, 1739–1747”, “Wang, Yanbin, Gao, Deli, Fang, Jun 2015. Study on lateral vibration analysis of marine riser in installation-via variational approach. J. Nat. Gas Sci. Eng. 22, 523–529”, “Wang, Yanbin, Gao, Deli, Fang, Jun 2015. Mechanical behavior analysis for the determination of riser installation window in offshore drilling. J. Nat. Gas Sci. Eng. 24, 317–323”, and “Wang, Yanbin, Gao, Deli, Fang, Jun 2015. Finite element analysis of deepwater conductor bearing capacity to analyze the subsea wellhead stability with consideration of contact interface models between pile and soil. J. Pet. Sci. Eng. 126, 48–54”; and finds that the mechanical and mathematical models described in these papers are clearly incorrect. Therefore, new mechanical and mathematical models have been suggested in this study. Keywords: Marine riser, Mechanical analysis, Mechanical model, Mathematical model