Seafloor flexible riser armor product

Abstract

The invention discloses a seafloor flexible riser armor product. The seafloor flexible riser armor product comprises a flexible riser, multiple bend limiters, a guiding pipe, an upper bell-shaped nozzle, a lower bell-shaped nozzle, and a flange connector. The flexible riser sequentially passes through the guiding pipe, the upper bell-shaped nozzle, the multiple bend limiters and the lower bell-shaped nozzle, the guiding pipe is fixedly connected to the bottom of an oil extraction ship, the upper bell-shaped nozzle is fixedly connected to the tail end of the guiding pipe, and the multiple bendlimiters are sequentially arranged on the periphery wall of the flexible riser in a sleeving mode in the length direction of the flexible riser. The lower bell-shaped nozzle is fixedly connected to the flange connector, the flexible riser passes through the lower bell-shaped nozzle to be connected with the flange connector, and the flange connector is fixedly connected to a seafloor oil well, so that the flexible riser communicates with the seafloor oil well. The seafloor flexible riser armor product is reasonable in structure, the gradual stiffness is provided by the bend limiters, the bending moment transition between the flexible riser and the rigid fixed end of the flexible riser is provided, and the overbending generated by the flexible riser is avoided.

Description

technical field [0001] The invention relates to the technical field of offshore oil and gas recovery, in particular to a submarine flexible riser armor product. Background technique [0002] In the prior art, the flexible riser is the most important part connecting the subsea production system and the floating device in the development of deep water oil and gas fields. The essence of the flexible riser is the conduit connecting the surface floating device and the subsea equipment, and it is an important but weak part of the entire system of the marine pipeline. During the application of the flexible riser, various problems will be encountered. For example, the floating body on the upper part of the flexible riser generally needs to withstand the dynamic effects of wind, waves and ocean currents during operation, and produces complex responses, which act on the top of the flexible riser, making The reciprocating motion of the flexible riser may cause fatigue damage at the co...

AI Technical Summary

Problems solved by technology

During the application of the flexible riser, various problems will be encountered. For example, the floating body on the upper part of the flexible riser generally needs to withstand the dynamic effects of wind, waves and ocean currents during operation, and produces complex responses, which act on the top of the flexible riser, making The reciprocating motion of the flexible riser may cause fatigue damage at the connection between the top of the flexible riser and the platform

[0003] The structure of the flexible riser in the prior art is not reasonable enough, and the flexible riser is prone to excessive bending deformation during use, resulting in excessive bending, which cannot meet the needs of modern deep-sea oil and gas resource development

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