苏里格气田集输管线腐蚀主控因素权重及规律研究

蒋成银, 李琼玮, 白自龙, 韩茈茈, 惠宝平, 张若茵, 刘伟

doi:10.16577/j.issn.1001-1560.2024.0278

材料保护 >

2024 , Vol. 57 >Issue 12: 131 - 137

DOI: https://doi.org/10.16577/j.issn.1001-1560.2024.0278

实用篇

苏里格气田集输管线腐蚀主控因素权重及规律研究

展开

1.中国石油长庆油田分公司第三采气厂2.中国石油长庆油田分公司油气工艺研究院

韩茈茈(1990－)，工程师，主要从事天然气井排水采气及完整性管理工作，电话:15249231822，E-mail:15249231822＠126.com

收稿日期: 2024-03-22

修回日期: 2024-06-17

录用日期: 2024-06-25

网络出版日期: 2025-01-14

收起

Study on the Weight and Patterns of Key Controlling Factors for Corrosion in Gathering and Transportation Pipelines of the Sulige Gas Field

Expand

(1.The Third Gas Production Plant， PetroChina Changqing Oilfield Company，Erdos 017000， China；2.Oil and Gas Technology Institute， PetroChina Changqing Oilfield Company， Xi’an 710018， China)

HAN Zizi(1990－)， Engineer， Research Focus: Natural Gas Production and Integrity Management， Tel.:15249231822， E-mail:15249231822＠126.com

Received date: 2024-03-22

Revised date: 2024-06-17

Accepted date: 2024-06-25

Online published: 2025-01-14

Fold

摘要

苏里格气田西区属于含水气藏，管道发生腐蚀，严重影响气田的正常生产运行，同时也会带来较大的经济损失和安全问题。首先对目标气田现场服役的集输管线进行了腐蚀分析。在此基础上，通过腐蚀挂片试验、扫描电子显微镜、共聚焦显微拉曼以及X 射线衍射技术，结合对水质和气质的分析，明确了管线腐蚀的规律，并提出腐蚀主控因素包括氯离子、微生物、CO2分压、总压和流速，且针对腐蚀特征的不同，揭示了各腐蚀主控因素所占的权重。以样品均匀腐蚀为评判标准，CO2分压对腐蚀速率影响所占权重最大，为58.00%；以样品点蚀为评判标准，微生物对腐蚀速率影响所占权重最大，为34.00%。

关键词： 集输管线; CO₂腐蚀; 微生物腐蚀; 腐蚀权重

本文引用格式

蒋成银, 李琼玮, 白自龙, 韩茈茈, 惠宝平, 张若茵, 刘伟 . 苏里格气田集输管线腐蚀主控因素权重及规律研究[J]. 材料保护, 2024 , 57(12) : 131 -137 . DOI: 10.16577/j.issn.1001-1560.2024.0278

Abstract

Since the western part of the Sulige Gas Field is a water-bearing gas reservoir， the pipelines are prone to corrosion， which severely affects the normal production operations of the gas field and results in significant economic losses and safety risks.In this study， the corrosion of gathering and transportation pipelines in the target gas field was analyzed.Based on this analysis， corrosion coupon experiments， scanning electron microscopy (SEM)， confocal Raman microscopy and X-ray diffraction (XRD) techniques were employed， combined with water and gas quality analyses， to investigate the corrosion patterns of the pipelines.The primary controlling factors of corrosion， including chloride ions，microorganisms， CO2 partial pressure， total pressure and flow rate， were identified.Furthermore， the weight of each controlling factor was determined according to different corrosion characteristics.Results showed that when uniform corrosion of the samples was used as the evaluation criterion， the CO2 partial pressure had the greatest influence on the corrosion rate， accounting for 58.00%of the weight.When pitting corrosion of the samples was used as the evaluation criterion， microorganisms had the greatest influence on the corrosion rate， accounting for 34.00%of the weight.

Key words： gas pipeline; CO₂ corrosion; microorganism corrosion; corrosion weight

Options

文章导航

模态框（Modal）标题

摘要

本文引用格式

Abstract