High-temperature high-pressure tubular-flow erosion corrosion experiment device

Abstract

A high-temperature high-pressure tubular-flow erosion corrosion experiment device mainly includes: a high-temperature high-pressure kettle, a first pressure meter, a temperature meter, a sample test tube, an actual object test tube, a sample trough, a magnetic pump, a liquid transporting pipe, and an ultrasonic flow rate meter. The high-temperature high-pressure kettle is used for providing a fluid at certain temperature and under certain pressure. The actual object test tube is connected to a third joint and a fourth joint of the liquid transporting pipe through a second flange. An actual object tube is fixed in the actual object test tube through a first corrosion-resistant sealing ring. The sample test tube is connected to a first joint and a second joint of the liquid transporting pipe through a first flange. The sample trough, in which a sample is hung, is formed in the sample test tube. The magnetic pump is used for providing power to the experiment device for driving fluid circulation. The ultrasonic flow rate meter is used for testing the speed of the circulated fluid. The whole experiment device is made of corrosion-resistant alloy and a heat insulation layer covers external walls of all parts, so that temperature loss is avoided. The device is suitable for drilling production engineering of petroleum and natural gas.

Description

technical field [0001] The patent of the invention relates to the technical field of oil and natural gas drilling and production engineering, in particular to a high-temperature and high-pressure pipe-flow erosion corrosion experimental device. Background technique [0002] Erosion corrosion is the phenomenon of accelerated material destruction when there is high relative motion between the corrosive fluid and the material, and it is the result of the interaction between mechanical erosion wear and electrochemical corrosion. Studies have shown that the weight loss of metal materials caused by the interaction of erosion and corrosion is much greater than the sum of the individual effects of erosion and corrosion. When the conveying medium contains solid particles, the damage of these flow-passing parts will be more serious, and its life will be significantly shortened, resulting in huge economic losses and potential safety hazards. Foreign surveys and statistics show that er...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a high-temperature and high-pressure pipe-flow type erosion corrosion experimental device to solve the technical problem that the erosion-corrosion mechanism of physical pipelines and their samples under the action of high-temperature and high-pressure pipe-flow acid flow fluid is difficult to accurately predict. The operation is simple and convenient, and it is very easy to meet the real working conditions of oil and gas pipelines in different environments

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