Gas supercharging device for carbon dioxide flooding

Abstract

The invention discloses a gas supercharging device for carbon dioxide flooding. The device comprises a tank body, a drainage pipe, a gas outlet pipe, an adjusting valve, a booster pump, a gas inlet pipe, a first barrel body, a motor, a spiral shaft, a flow guide pipe, a second barrel body, a top plate, a hydraulic cylinder, supporting legs, a pressing plate, a connecting rod, a limiting rod, a piston, a sealing ring, a supporting plate, a bearing seat, a rotating shaft, a roller, a washer, a fixed pipe, a connecting pipe, a sleeve, a conveying pipe, a gasket, a convex plate, a bolt, a box body, a box cover, a water outlet pipe, a water inlet pipe, a water pump, a circulating pipe, a separator plate and a diversion port. The device has the beneficial effects that the tank body is adopted for storing carbon dioxide, carbon dioxide gas can be compressed while carbon dioxide is conveyed, the pressurization effect of carbon dioxide is improved, the effect of mixing the carbon dioxide with crude oil is improved by adopting multi-stage gas compression, heat dissipation of the surface of the barrel body can be implemented, temperature adjustment is achieved, and adjustment on pressure and temperature in the carbon dioxide gas conveying process is facilitated.

Description

technical field [0001] The invention relates to a gas booster for carbon dioxide flooding, in particular to a gas booster for carbon dioxide flooding, and belongs to the technical field of carbon dioxide flooding applications. Background technique [0002] Carbon dioxide flooding technology is a technology that injects carbon dioxide into the oil layer to increase the oil recovery rate of the oil field. When carbon dioxide and formation crude oil first contact, they cannot form miscible phases, but under the conditions of suitable pressure, temperature and crude oil components, carbon dioxide can form miscible phases. At the front, the supercritical fluid will extract heavier hydrocarbons from the crude oil, and continuously concentrate the gas that displaces the front, and the carbon dioxide and crude oil will become miscible liquids, forming a single liquid phase, so that the Formation crude oil is displaced to the production well, which has a viscosity-reducing effect: ca...

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Problems solved by technology

[0003] In the patent document "CN109469464A A carbon dioxide injection device for carbon dioxide flooding", it continuously injects carbon dioxide gas while ensuring stable and orderly injection of carbon dioxide gas to improve the continuous supply efficiency of carbon dioxide gas. The push rod pushes the support seat to adjust the rolling wheel to push up the fixed seat, which is convenient for workers to push and move the device, which greatly reduces the labor intensity of the worker's mobile device. However, it lacks the function of carbon dioxide gas pressurization. When carbon dioxide gas contacts crude oil , the lower pressure is not enough to form miscible phases, affecting the CO2 displacement effect

There is still no gas boosting device for carbon dioxide flooding with reasonable and reliable structure, temperature regulation function and carbon dioxide high-efficiency boosting function.

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