Detection apparatus and method for hydrogen permeation in high-temperature high-pressure hydrogen sulfide environment and under stress conditions

Abstract

The invention discloses a hydrogen permeation detection device under high-temperature and high-pressure hydrogen sulfide environment and stress conditions, including a nut, a sample, a high-temperature and high-pressure cathode reaction kettle, an anode hydrogen evolution reaction tank and a sample seat; the high-temperature and high-pressure cathode reaction kettle is a The side wall of the side is provided with a sealing sleeve radially, one end of the sealing sleeve is located at the reaction chamber of the high temperature and high pressure cathode reactor, and the other end protrudes from the outer wall of the high temperature and high pressure cathode reactor, and is connected with the high temperature and high pressure cathode reactor. A sealed connection is formed between the outer walls of the high-pressure cathode reactor; a heating device is installed on the outer wall of the high-temperature and high-pressure cathode reactor; one side of the anode hydrogen evolution reaction tank extends to the outer end of the sealing sleeve. The device of the present invention is coated with a nickel layer on the inner wall of the sample. Due to the catalytic effect of the nickel coating, the hydrogen precipitated in the corrosion process can be completely oxidized, so the measured oxidation current, that is, the hydrogen permeation current, can fully reflect the hydrogen permeation behavior.

Description

technical field [0001] The invention relates to the technical field of simulated detection of metal materials, in particular to a hydrogen permeation detection device and method under high temperature and high pressure hydrogen sulfide environment and stress conditions. Background technique [0002] Many oil and gas fields in the world are sour gas fields, which contain a large amount of hydrogen sulfide, and petroleum equipment exposed to wet H 2 In the S environment, and under stress conditions, on the one hand, the macroscopic corrosion of petroleum equipment is greatly increased, and on the other hand, hydrogen atoms enter the interior of the metal component material, inducing various forms of cracking, especially stress corrosion cracking. With the continuous development of the petroleum industry, the environment of oil and gas extraction is becoming increasingly harsh, the pressure is gradually increasing, the temperature is gradually increasing, and the hydrogen sulfi...

AI Technical Summary

Problems solved by technology

However, each of the above-mentioned test devices can only be carried out at normal temperature and pressure, and cannot simulate the high temperature and high pressure H in the petroleum industry. 2 S environment

This greatly limits the application of this technology in the research of petroleum field

Images