Pressure control based multifunctional electrochemical test device and method

Abstract

The invention provides a pressure control based multifunctional electrochemical test device and method. The device is characterized by mainly comprising a pressure control panel, a first pressure release pipeline, a first pressure constant gas source, a first supercharging flow control valve, a first inlet valve, a first pressure release flow control valve, a pressure difference gauge, a second pressure release flow control valve, a second supercharging flow control valve, a second safety valve, a first safety valve, a second pressure constant gas source, a second pressure release pipeline, ahigh temperature high pressure reaction vessel, a glass container, a movable jacket, a threaded screw rod and a common reference electrode. According to a method based on the device, a three-electrodesystem can be insulated from the surrounding structure, the common reference electrode can be combined with a pressure difference control method to realize electrochemical test in the intermediate and low temperature high pressure environment, the service condition of the oil gas feed line can be satisfied completely, a high temperature high pressure reference electrode can be combined with the pressure difference control method to realize electrochemical test in the corrosion environment under the downhole high temperature high pressure condition, and the electrochemical test cost in simulated conditions is reduced to largest extent.

Description

Technical field [0001] This patent relates to the technical field of metal corrosion and protection equipment, and specifically provides a multifunctional electrochemical test device and method based on pressure control, which is suitable for medium and normal temperature and normal pressure, medium and low temperature-high pressure, high temperature-high pressure and other corrosive medium conditions , It is especially suitable for the research of medium and low temperature-high pressure corrosion electrochemical signal test based on common reference electrode. [0002] technical background [0003] In recent years, with the continuous deepening of oil and gas exploration and development, the number of high-temperature, high-pressure and high-acid oil and gas wells has continued to increase, and the corrosive medium involved is mainly CO 2 Such as acid gas, water and some organic acids, the various pipelines and containers involved face a more severe service environment, and the oi...

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Problems solved by technology

[0006] The purpose of the present invention is to propose a multifunctional electrochemical testing device and method based on pressure control to solve the technical problem that the electrochemical signal of the corrosion process of the oil and gas pipeline cannot be accurately measured in the past under actual working conditions, and to achieve the above purpose At the same time, the equipment and experiment costs are minimized

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