Rotary mooring conveying system

Abstract

The invention discloses a rotary mooring conveying system used for oil production operation. The rotary mooring conveying system comprises a plurality of rotary conveying connectors. Each of the rotary conveying connectors comprises an inner conveying ring; an outer conveying ring, which can be rotated with respect to the inner conveying ring; a conveying structure, which is disposed between the inner conveying ring and the outer conveying ring, and can be used to maintain the conveying during the rotary process; an inner conveying unit, which is connected with the inner conveying ring; an outer conveying unit, which is connected with the outer conveying ring. The inner conveying rings of the rotary conveying connectors are fixedly connected together. In the ocean marginal oilfield development field, the rotary mooring conveying system can be used as the conveying equipment used for exploitation operation by aiming at the compatibility between the functions of the wellhead operation platforms and the mooring platforms.

Description

technical field [0001] The invention relates to the field of offshore oil and gas development, and relates to a rotary mooring transportation system. 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 FPSO; 4) The subsea pipeline...

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

Images