A corrosion simulation system under the synergy of marine environment and oil-gas medium

Abstract

The invention relates to a corrosion simulation method and system under a synergistic effect of a marine environment and an oil-gas medium, belonging to the fields of test simulation methods and devices. The system comprises oil-gas corrosion simulation high-temperature and high-pressure device and a seawater corrosion simulation device. A high-temperature and high-pressure container is used for simulating corrosion environments of solutions including Co2 and Cl for conveying the oil-gas medium, gas, temperature, flow speed and the like in an equipment device, and the seawater corrosion simulation device is used for simulating solutions, dissolved oxygen, temperature, washout speed and angle and the like of seawater corrosion environments, so that internal and external environment temperatures in an underwater oil and gas exploitation device are effectively simulated, the service condition of the underwater oil and gas exploitation device is truly represented, the evaluation of corrosion environment adaptability and the screening of protection measures of the underwater oil and gas exploitation device are benefited, and the test accuracy is guaranteed.

Description

technical field [0001] The invention belongs to the field of test simulation methods and device testing, and relates to a corrosion simulation system under the synergistic action of simulating marine environment and oil-gas medium, especially suitable for simulating the material corrosion environment of underwater oil-gas exploitation equipment under the synergistic action of external seawater corrosion and internal transport medium Adaptability evaluation and screening of protective measures. Background technique [0002] The development of marine resources and the exploitation of oil and gas fields in our country must gradually develop in the direction of deep wells and highly corrosive environments. As the service environment becomes more and more harsh, the relevant underwater oil and gas production equipment is in an extremely harsh environment, not only to withstand the internal H 2 S, CO 2 , high Cl - The corrosion of the medium is also affected by the synergistic ...

AI Technical Summary

Problems solved by technology

However, the current existing test evaluation is mainly for the simulation of a single environment of seawater or oil and gas media, which cannot reproduce the synergistic corrosion damage of the material's internal and external environments, and cannot effectively evaluate the corrosion environment adaptability of the material and the screening of protective measures

At present, the traditional test equipment cannot realize the corrosion evaluation under the synergistic effect of seawater corrosion and transport medium

High-temperature and autoclaves used in laboratories have single performance and can only simulate a single corrosive environment, lacking the simulation and characterization of the synergy between the internal and external corrosive environments of underwater oil and gas extraction equipment; the Chinese patent application No. 200510011461.X also has the above problems. A seawater corrosion simulation system, but this device can only reflect the seawater corrosion environment outside the underwater mining device, and it lacks an effective simulation of seawater flow velocity, and it is also unable to reproduce the coordinated corrosion damage of the internal and external environment of the material

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