基于多元回归的套管钢含CO2/H2S腐蚀速率预测

doi:10.3969/j.issn.1006-396X.2021.01.010

石油化工高等学校学报 ›› 2021, Vol. 34 ›› Issue (1): 58-62.DOI: 10.3969/j.issn.1006-396X.2021.01.010

基于多元回归的套管钢含CO₂/H₂S腐蚀速率预测

陈昊¹，杨二龙^1,2，纪大伟^1,2，李宜霖¹，赵亮¹，杨云清¹

1. 东北石油大学石油工程学院，黑龙江大庆 163318； 2.东北石油大学提高油气采收率教育部重点实验室，黑龙江大庆 163318

收稿日期:2020-04-23 修回日期:2020-06-08 出版日期:2021-02-26 发布日期:2021-04-02
通讯作者: 杨二龙（1976-），男，博士，教授，博士生导师，从事油气田开发研究；E-mail：yel13796988396@126.com。
作者简介:陈昊（1997-），男，硕士研究生，从事油气田开发研究；E-mail：785971820@qq.com。
基金资助:
国家自然科学基金资助项目(51574085);黑龙江省科学基金项目(E2016008)。

Prediction of Corrosion Rate of Casing Steel Containing CO₂/H₂S Based on Multiple Linear Regression

Chen Hao¹， Yang Erlong^1,2， Ji Dawei^1,2， Li Yilin¹， Zhao Liang¹， Yang Yunqing¹

1.School of Petroleum Engineering，Northeast Petroleum University，Daqing Heilongjiang 163318，China； 2.Key Laboratory of Oil and Gas Recovery，Ministry of Education，Northeast Petroleum University，Daqing Heilongjiang 163318，China

Received:2020-04-23 Revised:2020-06-08 Published:2021-02-26 Online:2021-04-02

摘要/Abstract

摘要： 目前，关于含CO2/H2S井筒中油套管腐蚀速率研究是当前腐蚀与防护领域研究的热点。为准确研究油套管腐蚀情况，预测腐蚀速率，首先采取失重法研究不同腐蚀时间下油套管的腐蚀速率，并对实验结果进行拟合。其次，将研究结果与前人研究内容相结合，借助Table Curve 3D软件进行多元回归，确定腐蚀速率预测模型。结果表明，腐蚀速率随时间增加而不断减小，对实验结果进行拟合R2为0.989 3，误差较小。多元回归所建立模型能够准确预测腐蚀速率，误差在5%以内，满足精度要求，能够为现场油气井安全评价奠定基础。

关键词: 腐蚀模型, 腐蚀速率, 失重法, 多元回归

Abstract: At present,the research on the corrosion rate of the oil casing in the wellbore containing CO2/H2S is the current research hot spot in the field of corrosion and protection. In order to accurately study the corrosion situation of the oil casing and predict the corrosion rate,the weight loss method was first adopted to study the corrosion rate under different corrosion time,and the experimental results were fitted. Secondly, combining the research results of this paper with the previous research content,the Table Curve 3D software for multiple regression was used to determine the corrosion rate prediction model.The results show that the corrosion rate decreases continuously with the increase of time.The fitting of the experimental results R2 is 0.989 3,the error is small.The model established by multiple regression can accurately predict the corrosion rate and the error is within 5%,which meets the accuracy requirements,and can lay the foundation for the on⁃site oil and gas well safety evaluation.

Key words: Corrosion model, Corrosion rate, Weightlessness method, Multiple regression

陈昊，杨二龙，纪大伟，李宜霖，赵亮，杨云清. 基于多元回归的套管钢含CO₂/H₂S腐蚀速率预测[J]. 石油化工高等学校学报, 2021, 34(1): 58-62.

Chen Hao， Yang Erlong， Ji Dawei， Li Yilin， Zhao Liang， Yang Yunqing. Prediction of Corrosion Rate of Casing Steel Containing CO₂/H₂S Based on Multiple Linear Regression[J]. Journal of Petrochemical Universities, 2021, 34(1): 58-62.

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基于多元回归的套管钢含CO₂/H₂S腐蚀速率预测

Prediction of Corrosion Rate of Casing Steel Containing CO₂/H₂S Based on Multiple Linear Regression

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