Test method for high temperature and high pressure corrosion rate of multiphase medium

Abstract

The invention provides a multiphase medium high temperature and high pressure corrosion rate testing method, relates to the technical field of corrosion rate testing, and is applied to a multiphase medium high temperature and high pressure corrosion rate testing device. The method includes: feeding corrosion gas and corrosion liquid into the gas respectively Mix and stir in the liquid stirring device to form a gas-liquid mixture, and pass it into the preheater to heat to the preset temperature; inject the gas-liquid mixture into the high-temperature and high-pressure reactor through the gas-liquid mixture injection pipeline, and pass through the gas-liquid mixture The mixture is discharged from the discharge pipeline to form a gas-liquid mixture fluid; the corrosion rate of the gas-liquid mixture corroding the metal to be detected in the inductance probe is determined through the change in inductance of the inductance probe tester. The invention can solve the problem that the corrosion test in the prior art can only be tested in a static environment, it is difficult to simulate the dynamic environment in the downhole, the test data is not accurate enough, and the measurement speed is relatively slow, so the average corrosion rate can only be obtained for a long period of time The problem.

Description

technical field [0001] The invention relates to the technical field of corrosion rate testing, in particular to a method for testing multiphase medium high temperature and high pressure corrosion rate. Background technique [0002] Combustion oil recovery is an effective technology to enhance oil recovery. Compared with steam flooding oil recovery technology, it can be applied under harsher formation conditions, so it is a thermal recovery technology for heavy oil and residual oil. In the oil recovery process of burning oil reservoirs, the high temperature and high pressure environment of injection wells and production wells is very harsh. For example, during the ignition process of the injection well (such as electric ignition), the ignition temperature is generally about 450° C., and the wellbore of the oil layer section of the injection well will appear high temperature for a period of time. In addition, the air injected into the injection well will carry a certain amoun...

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Problems solved by technology

[0004] The embodiment of the present invention provides a method for testing the corrosion rate of multi-phase medium under high temperature and high pressure to solve the problem that the corrosion test in the prior art can only be tested in a static environment, it is difficult to simulate the dynamic environment in the well, the test data is not accurate enough, and the measured The problem is that the speed is slow and only the average corrosion rate can be obtained for a long period of time

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