Underwater dual-screw mixed transportation supercharging device

Abstract

The invention relates to an underwater dual-screw mixed transportation supercharging device. The underwater dual-screw mixed transportation supercharging device comprises a deep-water motor, a dual-screw pump, a homogenizer, a liquid storage tank, a piston type pressure compensator and a capsule type pressure compensator, wherein the dual-screw pump is positioned above the deep-water motor; the homogenizer is in butt joint with a wellhead pipeline; the liquid storage tank is in butt joint with a submerged pipeline; independent pressure compensation and cooling-lubricating loops are respectively adopted in the deep-water motor and the dual-screw pump, and work separately; movable seals of the deep-water motor and the dual-screw pump are balanced in internal pressure and external pressure. The underwater dual-screw mixed transportation supercharging device is safe and reliable, and has long service life. Compared with the conventional underwater dual-screw mixed transportation supercharging device, the underwater dual-screw mixed transportation supercharging device has the advantages that the structure is simple, and safety and reliability in work are achieved; heat generated by the dual-screw pump and the deep-water motor can be brought away in time, reliable running of the device is ensured, pressure difference does not exist between the inside and outside of the device, complete pressure compensation is achieved, high economic efficiency is realized, an underwater treatment process is simplified, the platform building cost and running cost are saved, and the supercharging device has remarkable economic benefit and wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of marine oil and gas exploitation, and in particular relates to an underwater twin-screw mixed-transport supercharging device suitable for seabed gas-liquid transportation. Background technique [0002] my country's offshore oil and gas reserves are abundant, but the degree of exploration and development of my country's offshore oil and gas is relatively low, mainly concentrated in the Bohai Sea, East China Sea and South China Sea offshore waters, the development scale is small, and the working water depth is mainly below 300 meters, which is far from meeting the needs of national economic development . At the same time, with the changes in the development of offshore oilfields, it is imperative to reduce costs and increase efficiency. Efforts to reduce the production cost of crude oil will be one of the effective ways to increase benefits. Due to the uneconomical development of deep-sea oil and gas fields u...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an underwater twin-screw mixed-transport booster device for the above-mentioned problems of complex structure, internal and external pressure difference, and incomplete pressure compensation in the existing underwater mixed-transport booster system. Simple, safe and reliable, effectively improve the depth of offshore oil exploitation and crude oil output, and simplify the underwater treatment process

Images