Box-shaped truss type four-stand column deep water platform system with asymmetric soft cabin

Abstract

The invention provides a box-shaped truss type four-stand column deep water platform system with an asymmetric soft cabin, belonging to the technical field of deep sea well drilling and platform producing, and comprising a top module, a hard cabin, a center well, a truss structure, a soft cabin, a mooring rope and a TTR stand pipe, characterized in that the hard cabin adopts a four-upright form, the top of the hard cabin is connected to the top module through a deck spud leg, the hard cabin is uniformly distributed at the ouside of the center well and is connected to the center well through a reinforcement tendon structure and a horizontal connection hard cabin room, the soft cabin is arranged at the bottom and adopts an asymmetric cabin room design, ballast in the cabin is water or solid; the hard cabin and the soft cabin are connected through the truss structure, the truss structure adopts a large diameter four-upright form, a heaving plate adopts a box design, the mooring rope adopts a chain-cable-chain mode to connect the outer wall of the hard cabin, the TTR stand pipe penetrates into an oil well through the center well, and the mooring rope and the TTR stand pipe constitute a mooring system. The system of the invention has low construction cost, low difficulty, good stability, long service life, and facilitates to install and tow.

Description

Technical field: [0001] The invention relates to a deep sea drilling and production platform system, in particular to the design of a hard cabin, a soft cabin and a heave plate of a SPAR platform. Background technique: [0002] As a strategic resource, oil plays a vital role in promoting national development. In recent years, my country's demand for oil has grown rapidly, and offshore oil and gas has developed rapidly. The development of shallow sea oil and gas resources has become increasingly saturated. The development of deep sea oil and gas exploration and development from shallow sea to deep sea has become an inevitable trend. [0003] SPAR platform is a kind of offshore oil production platform. It is widely used in deep sea from 300 meters to 3000 meters. Practical and economical, it has been widely used around the world, and is internationally recognized as the development direction of the next generation of deepwater platforms. [0004] At present, there are three ...

AI Technical Summary

Problems solved by technology

[0004] At present, there are three main types of SPAR platforms: Classic Spar (classic column platform), Truss Spar (truss column platform) and Cell Spar (tube-bundle column platform), among which Truss Spar (truss column platform) has the advantages of low cost and reduced heave motion , reduce drag load, reduce vortex-induced oscillation, etc., but during operation, the truss structure, heave plate and the connection nodes of the structure are all subjected to the continuous dynamic load of the wave, so the fatigue stress of the nodes is large, which is easy to cause the structure Reduced fatigue life

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