A hydrogen sulfide corrosion big data analysis method for an oil-gas field underground pipe column and a wellhead gas transmission pipeline

Abstract

The invention discloses a hydrogen sulfide corrosion big data analysis method for an oil-gas field underground pipe column and a wellhead gas transmission pipeline. The method comprises the followingsteps of S1, analyzing the state of a hydrogenated sulfur corrosion mechanism; carrying out the intra-laboratory hydrogen sulfide corrosion, hydrogen embrittlement analysis and hydrogen sulfide corrosion analysis in an engineering environment, wherein the hydrogen sulfide corrosion analysis is an experiment for corroding an oil well pipe by using wet hydrogen sulfide, the hydrogen embrittlement analysis is an experiment for hydrogen embrittlement of the oil well pipe in a hydrogen sulfide environment, and the hydrogen sulfide corrosion analysis in an engineering environment comprises calculation of mechanical behaviors of tissues and structures of pipes containing cracks and defects and stress intensity factors under a tensile stress working condition. According to the invention, H2S corrosion damage can be accurately diagnosed; the direct and reliable operation and maintenance basis is provided, the online monitoring and prejudgment practicability is improved, the vicious accident occurrence frequency is greatly reduced, the safe and stable operation of devices and pipelines is guaranteed, and the problem of vicious accidents caused by the fact that H2S corrosion damage cannot beeffectively and accurately diagnosed and predicted in the prior art is solved.

Description

technical field [0001] The invention relates to the technical field of anticorrosion of natural gas pipelines, in particular to a large data analysis method for hydrogen sulfide corrosion of downhole pipe strings and wellhead gas transmission pipelines in oil and gas fields. Background technique [0002] Judging from the accumulation of experience in inspection and maintenance, testing and inspection over the years, as well as the progress of anti-corrosion technology in recent years, corrosion runs through all links of oil and gas field development, and the supporting corrosion theory research has been carried out extensively and in-depth, which shows that anti-corrosion issues play an extremely important role in the entire oil and gas development and production. status. The CMA-1000 corrosion monitoring system was successfully tested on the gas-gathering pipeline of Well Zhong40 in the low-temperature station, marking the beginning of the development of anti-corrosion tech...

AI Technical Summary

Problems solved by technology

However, in practical applications, like other monitoring and detection techniques, there are problems of passive response and poor initiative. Corrosion perforation is still a direct and passive "corrosion report". or replace the vessel line

[0003] From the perspective of current oil and gas extraction and transportation, in terms of long-term corrosion mechanism research, anti-corrosion measures, and monitoring and detection methods, any of the above measures has its application limitations, and none of them can solve the corrosion problem well. Therefore, we propose a hydrogen sulfide corrosion intelligent operation and maintenance and health management method

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