Single-upright-column mooring type wellhead production operation platform

Abstract

The invention discloses a single-upright-column mooring type wellhead production operation platform. The platform comprises an upright column body, a positioning and mounting assembly, a rotating platform, an oil extraction operation platform and at least one inner well slot, wherein the upright column body is of a hollow structure, the positioning and mounting assembly is arranged on the bottom of the upright column body, the rotating platform is arranged on the outer portion of the upright column body and can rotate around the axis of the upright column body, and the rotating platform comprises a mooring connection device; the oil extraction operation platform is arranged on the top of the upright column body and positioned on the rotating platform, and the oil extraction operation platform is provided with an oil extraction operation component; and at least one inner well slot is arranged inside the upright column body, wherein at least one inner well slot can be connected with theoil extraction operation platform. The single-upright-column mooring type wellhead production operation platform can adapt to an economy index for marginal oil field exploitation.

Description

technical field [0001] The invention relates to the field of offshore oil and gas development, and relates to a single column mooring type wellhead production operation platform. Background technique [0002] In my country's shallow waters, many marginal oil fields have been proven. The so-called marginal oil fields refer to those with small proven output (recoverable reserves of a single oil field are about 100,000 tons to 2 million tons), geographically dispersed and far away from other large oil fields, and economically developed by traditional development models. Less profitable oil fields. [0003] A complete oilfield development needs to have four processes of drilling (repair)-production-storage-transportation. The existing traditional shallow water oilfield development model in my country mainly includes the following parts: (1) single or multiple wellhead platforms; (2) production storage and offloading tanker (FPSO); (3) jacket and single point system for mooring...

AI Technical Summary

Problems solved by technology

[0008] (2) The "bee-type" development model, that is, for small, isolated and small marginal oil and gas fields that are 20km away from the developed oilfields and cannot rely on the developed oilfields, mobile drilling (repair) wells, production, A model for the development of small-scale production devices that integrate power, oil storage, export, and life

The "bee-style" development mode can make marginal oil fields have certain economic benefits, but in order to realize the mobility of the platform, the shape of the platform will be limited, and it is difficult to allocate enough space for oil storage. Generally, the full-load reserves cannot exceed 2000 tons, which makes the number of shuttle tankers to pick up oil too frequent, thus reducing the economics of the entire oilfield development

[0011] Another way of thinking is to consider connecting the storage and transportation ship with the jacket under normal production conditions, the jacket is used for production, and the storage and transportation ship is used to store crude oil, which not only has the functions of production, power, oil storage, export, and living , but in this way, the load on the storage and transportation ship in the production state is much greater than that of the oil storage device configured on the original platform, resulting in poor wind and wave resistance of the system as a whole, especially when the storage and transportation ship is in the state of transverse waves, the lateral load is extremely large , the violent rolling motion is likely to cause damage to the jacket or associated equipment and lines, resulting in accidents

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