Quick release system for marine flexible vertical riser

Abstract

The invention relates to a quick release system for a marine flexible vertical riser. The system comprises a tubing system and a riser system connected with the lower end of the tubing system through an annular riser joint, the tubing system comprises tubing and a tubular riser suspension structure fixed to a ship, the tubing and the tubular riser suspension structure are concentrically arranged, the riser joint is arranged at the bottom of the tubing, a plurality of reinforcing ribs are uniformly arranged on the outer wall of the riser suspension structure at intervals, and a clamping jaw locking mechanism similar to an L shape is rotationally connected to each reinforcing rib; the upper ends of the clamping jaw locking mechanisms are connected with the side wall of the riser suspension structure through compression springs, and the clamping jaw locking mechanisms support the riser joint through steel arm beams at the bottom; pressure applying devices used for inwards applying pressure to the clamping jaw locking mechanisms are arranged on the outer sides of the tops of the clamping jaw locking mechanisms.

Description

technical field [0001] The invention relates to a quick release system for marine flexible risers, which belongs to the field of offshore oil development. Background technique [0002] Offshore extended testing is an effective way of economical development of offshore oil development, and its main purpose is to increase the early production of oilfields and obtain more detailed reservoir information. Extended testing at sea generally relies on facilities such as FPSO or drilling ships. The offshore extended test generally lasts 3 to 6 months, and the longest record is 12 months. Therefore, the offshore extended test is a temporary production measure, and its system design requirements are generally not as high as those of long-term production facilities. Its ability to resist extreme environmental conditions less capable. The flexible riser system is the key equipment for the offshore extension test, and it is also the weak point of the offshore extension test system. Its ...

AI Technical Summary

Problems solved by technology

The existing traditional extended test riser system can only plan release, the release process takes a long time, many steps, complicated operation and high risk

In the event of sudden natural disasters such as "earth typhoon" that cannot be predicted in advance, it is difficult for the traditional riser system to be released quickly and urgently, and the extended test ship it relies on cannot be evacuated urgently. The project is risky and may tear the riser , Crude oil leakage, causing serious marine pollution and secondary disasters

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