Semi-sliding box-type buttress of floating production storage and offloading (FPSO) upper module

Abstract

The invention relates to a semi-sliding box-type buttress of a floating production storage and offloading (FPSO) upper module. The semi-sliding box-type buttress of the FPSO upper module mainly consists of a supporting circular stand column, side wing support plates, concave arc wrist plates, rectangular wrist plates, a box body, a sliding trapezoidal groove base plate, baffle plates, a sliding trapezoidal tooth base plate, a fixed end metal gasket and a fixed end stand pipe base plate, wherein the supporting circular stand column is a supporting body connected with an upper plate and a lowerplate of the box body; an internal supporting body of the box body is formed by welding the side wing support plates, the concave arc wrist plates and the rectangular wrist plates; the metal gasket iswelded on a fixed end box body cover plate for reinforcing and balancing, so that a fixed end buttress is formed; the baffle plates are welded on a sliding end box body cover plate along the bow andstern direction for limiting the cross sliding and vertical fluctuating of the sliding trapezoidal groove base plate; furthermore, the base plate is welded on the box body cover plates, and the sliding trapezoidal tooth base plate is in lap joint with the upper part of the base plate, so that a sliding end buttress is formed; support legs for a frame platform are fixedly welded with a module buttress part in a form of simply supported beams, and are in partial sliding contact. The semi-sliding box-type buttress of the FPSO upper module is reasonable in stress, high in adaptability of sea conditions and wide in applicable sea areas.

Description

technical field [0001] The invention relates to a semi-sliding type box-type support pier at the upper part of an FPSO, which belongs to the field of offshore oil engineering facilities. Background technique [0002] Floating production storage and offloading system (FPSO) is a comprehensive large-scale offshore oil production base integrating production, oil storage, export, living and power generation in offshore oil development. Compared with other forms of oil production platforms, FPSO has the advantages of strong wind and wave resistance, wide water depth range, large oil storage / unloading capacity, transferability and repeated use, and is widely suitable for deep sea, shallow sea and marginal oil fields far from the coast The development of offshore oil and gas fields has become the mainstream production method for offshore oil and gas field development. [0003] At present, there are many different support types for the upper module structure of the floating product...

AI Technical Summary

Problems solved by technology

The outriggers of the module frame platform are directly welded on the module pier. Due to the longitudinal bending deformation of the FPSO hull girder, fatigue cracks are easily generated at the welding joints, and deformation or tearing is easy to occur, resulting in structural instability and pipeline tearing. cracks and equipment damage

Because the crude oil storage tank in the FPSO hull is flammable and explosive, and the production process system has uncertain risks, the repair of weld cracks has become a complicated problem

With the development of ultra-deep sea and marginal oil fields, the traditional modular support form is not suitable for FPSO with harsh environmental conditions

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