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华北油田油井腐蚀原因分析-

西南石油大学学报(自然科学版)

2013年6月第35卷第3期

Journal of Southwest Petroleum University(Science&Technology Edition)

V ol.35No.3Jun.2013

DOI:10.3863/j.issn.1674–5086.2013.03.020

文章编号:1674–5086(2013)03–0142–07

中图分类号:TE358

文献标识码:A

华北油田油井腐蚀原因分析*

杜清珍1,谢刚1,杨梅红2,郑云萍3,田中太4

1.中国石油华北油田分公司采油工艺研究院,河北任丘062552

2.中国石油华北油田分公司环境监测中心站,河北任丘062552

3.西南石油大学石油工程学院,四川成都610500

4.中国石油华北油田分公司第二采油厂,河北霸州065700

摘要:针对油井腐蚀、结垢严重影响油田正常生产的问题,开展了腐蚀、结垢原因及机理分析研究。通过对不同断块不同油层200多口油井采出水离子、腐蚀结垢产物、腐蚀速率仿真计算以及油田生产中发现的腐蚀结垢实际情况的

含量高,综合分析,认为:产出液含水量升高是产生油井腐蚀的直接原因。由于地层水偏酸性,游离CO2,H2S,HCO?

3矿化度高,电化学反应强烈是腐蚀存在的机理;而产出液中Ca2+,Fe3+,Fe2+及Mg2+含量的不同是导致多油井结垢程度不一致的根本原因。为快速定性地明确油井腐蚀、结垢类型和结垢治理奠定了基础。

关键词:油井;腐蚀;结垢;仿真计算;统计分析

Analysis of Well Pipe String Corrosion Factors in Huabei Oilfield Du Qingzhen1,Xie Gang1,Yang Meihong2,Zheng Yunping3,Tian Zhongtai4

1.Production Technology Research Institute of Huabei Oilfield Company,CNPC,Renqiu,Hebei062552,China

2.Environmental Monitoring Center of Huabei Oilfield Company,CNPC,Renqiu,Hebei062552,China

3.School of Petroleum Engineering,Southwest Petroleum University,Chengdu,Sichuan610500,China

4.The Second Exploitation Factory of Huabei Oilfield Company,CNPC,Bazhou,Hebei065700,China

Abstract:Aimed at the problems of the well corrosion and scaling in oilfield,we undergo the study of the mechanism and cause of the well pipe string corrosion and scaling.The relationship between the ion content in different type water media and the corrosion rate in pumping wells is confirmed by the analysis of produced water ion,corrosion and scaling products.The corrosion rate calculated with the simulation software and of the actual situation of the corrosion and scaling.A method to quickly and qualitatively estimate the type of the corrosion and scaling in the NaHCO3type water is proposed,which lays a foundation for solving the corrosion and scaling problems.

Key words:oil well;corrosion;scaling;simulation calculation;statistical analysis

网络出版地址:http://https://www.doczj.com/doc/4b3025512.html,/kcms/detail/51.1718.TE.20130522.0905.007.html

杜清珍,谢刚,杨梅红,等.华北油田油井腐蚀原因分析[J].西南石油大学学报:自然科学版,2013,35(3):142–148.

Du Qingzhen,Xie Gang,Yang Meihong,et al.Analysis of Well Pipe String Corrosion Factors in Huabei Oilfield[J].Journal of Southwest Petroleum University:Science&Technology Edition,2013,35(3):142–148.

*收稿日期:2012–06–01网络出版时间:2013–05–22

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