页岩气集输管道的故障分析与实验

IF 1.6 4区材料科学 Q2 Materials Science Transactions of The Indian Institute of Metals Pub Date : 2024-08-02 DOI:10.1007/s12666-024-03328-6

Yong Chen, Taiwei Luo, Dongying Meng, Qiliang Wang, Xiao Tao, Wenxin Pu, Ruifei Xie

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摘要

本文探讨了 E 气矿页岩气集输管道穿孔失效的原因，并提出了预防措施。EDS 实验发现，腐蚀产物主要为 Fe2O3、FeS 和 FeCO3。页岩气中含有 24.908 g/m3 CO2 和 0.384 g/m3 H2S，地层水中含有 20.445 g/m3 Cl-。因此，管道中出现了 CO2/H2S 腐蚀，而 Cl- 加剧了材料基体的局部损伤，加速了管道的腐蚀。母材的耐腐蚀性高于焊缝，但焊缝的耐侵蚀性高于母材。CFD 模拟结果发现，管道侵蚀的主要原因是页岩气中含有砂砾，气量超过了设计气量。因此，管道穿孔失效是腐蚀和侵蚀共同作用的结果，而且侵蚀对管道的影响要强于 CO2/H2S 腐蚀。

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Failure Analysis and Experiment of Shale Gas Gathering Pipeline

This paper explores the reasons for the perforation failure of the shale gas gathering pipeline in the E Gas Mine and proposes preventive measures. EDS experiment found that the corrosion products were mainly Fe₂O₃, FeS, and FeCO₃. Shale gas contains 24.908 g/m³ CO₂ and 0.384 g/m³ H₂S, and formation water contains 20.445 g/m³ Cl⁻. Therefore, CO₂/H₂S corrosion has occurred in the pipeline, and Cl⁻ exacerbated localized damage to the material matrix, accelerated corrosion of the pipeline. The base material was more corrosion resistant than the weld, but the weld was more erosion resistant than the base material. The CFD simulation results found that the main reason of pipeline erosion is that, the shale gas contains grit and the gas volume exceeds the designed gas volume. So, the perforation failure of the pipeline was a result of both corrosion and erosion, and the effect of erosion is stronger than that of CO₂/H₂S corrosion on the pipeline.

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来源期刊

Transactions of The Indian Institute of Metals Materials Science-Metals and Alloys

CiteScore

2.60

自引率

6.20%

发文量

期刊介绍： Transactions of the Indian Institute of Metals publishes original research articles and reviews on ferrous and non-ferrous process metallurgy, structural and functional materials development, physical, chemical and mechanical metallurgy, welding science and technology, metal forming, particulate technologies, surface engineering, characterization of materials, thermodynamics and kinetics, materials modelling and other allied branches of Metallurgy and Materials Engineering. Transactions of the Indian Institute of Metals also serves as a forum for rapid publication of recent advances in all the branches of Metallurgy and Materials Engineering. The technical content of the journal is scrutinized by the Editorial Board composed of experts from various disciplines of Metallurgy and Materials Engineering. Editorial Advisory Board provides valuable advice on technical matters related to the publication of Transactions.