Abstract
The subsea tree is one of the critical pieces of equipment in the subsea production system, and its installation is related to the safe production of offshore oil and gas. Due to the differences in the form of the structures, the speed of entering the water, the marine environment, and other factors, the process of the structure entering the water is exceedingly complicated. During the engineering installation, the most dangerous phase involves the structure passing through the splash zone. Based on the theory of the movement of the subsea tree passing through the splash zone, Lingshui 17-2 subsea tree installation was analyzed with the marine engineering software OrcaFlex, and a sensitivity analysis of the lowering of the subsea tree was performed. During the splash zone phase, the wave height had the highest impact on the subsea tree, affecting the horizontal offset and cable load, which may lead to the oil tree capsizing and cable breakage. Furthermore, the velocity only affected the horizontal offset, and the overall effect was not noticeable. The operational safety window for the subsea tree installation was established according to the operational safety standards. Therefore, the recommended lowering speed was 0.50 m/s, while the flow velocity should not exceed 1.50 m/s, and the wave height should not be higher than 4.5 m.
Highlights
A subsea production system is an essential component in offshore platform installation
The structures of components such as the tree valve and tree frame were modeled with an elastic solid, and the installation tool was connected to the subsea tree
This article was based on the theory of lowering the subsea tree through the splash zone
Summary
A subsea production system is an essential component in offshore platform installation. Used the explicit formulation dynamic analysis Nam finite et element predict an experimental study of theon deepwater lifting and lowering operations a subsea and the wave slamming forces the subsea equipment bottom panels inofthe splashmanifold, zone during regular waveNam tests et were carried out to investigate the vessel motion and wire tension responses during installation. Mostly focused on wire the influence of and a single factor on the subsea passing through the splashwhile zone, studied the hoist dynamics lowering speeds of thetree subsea structure installation and no safety window for engineering applications was developed for engineering applications. In this passing through the splash zone. Subsea tree is analyzed, theissafety window established to guideof the installation of the subsea tree
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
