Abstract:Based on a relative deepwater gas field development project conducted in recent years, the device and tool resources, hose parameters, environmental parameters and main installation work contents related to the vertical lay of flexible hose in this project are introduced. The accepted criteria and software-modeling basis associated with the installation calculation analysis of the vertical lay of the flexible hose are presented. The detailed research work of the installation simulation calculation and result analysis of the vertical lay of the flexible hose is illustrated, including the execution of installation calculation and analysis on all installation processes, the acquisition of the forces bared by flexible hose and main installation devices during installation, the determination of allowable weather window for offshore installation. The reference could be provided for the similar projects in future.