Carbon dioxide injection device for carbon dioxide oil displacement

Abstract

The invention discloses a carbon dioxide injection device for carbon dioxide oil displacement, which comprises a fixed seat, a supporting column, a fixing column, an electro-hydraulic push rod, a connecting cylinder, a connecting rod, a supporting seat, a rolling cylinder, a fixing cylinder, a moving rod, an exhaust shell, an electric push rod, a piston and a scale mark, a first air inlet pipe, afirst one-way valve, a second air inlet pipe, a second one-way valve, a main air inlet pipe, a flange, an exhaust pipe, a carbon dioxide storage tank, an air outlet pipe, a third one-way valve, a connecting air pipe, a first air guide pipe, a second air guide pipe and a conical air pipe head. The carbon dioxide injection device for carbon dioxide oil displacement has a simple structure, is convenient for continuously injecting carbon dioxide gas, ensures stable and orderly injection of the carbon dioxide gas at the same time, improves the continuous supply efficiency of the carbon dioxide gas;the support seat is pushed by the electro-hydraulic push rod pushing up the fixing seat to adjust the rolling wheel, so that a worker can conveniently push and move the device, and the labor intensity of the worker moving device is greatly reduced.

Description

technical field [0001] The invention relates to a carbon dioxide injection device, in particular to a carbon dioxide injection device 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 are in contact for the first time, they cannot form miscible phases, but under the conditions of suitable pressure, temperature and crude oil components, carbon dioxide can form miscible phases leading edge. The supercritical fluid will extract heavier hydrocarbons from the crude oil and continuously concentrate the gas that displaces the front. [0003] There are many problems in the injection process of carbon dioxide used in oil and gas wells. For example, in the process of carbon dioxide injection in the existing ca...

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Problems solved by technology

[0003] There are many problems in the injection process of carbon dioxide used in oil and gas wells. For example, in the process of carbon dioxide injection in the existing carbon dioxide device, the process of injecting carbon dioxide into oil and gas wells cannot be continuously injected, which greatly affects the oil production effect in oil and gas wells. At the same time, when the device is in use, it needs to be manually transported and adjusted, which greatly increases the workload of the laborers, and the existing gas injection pipeline is not convenient for length adjustment, which affects the use range of the device and is not easy to use.

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