油田采出液余热利用过程腐蚀结垢评价及控制方法  

Corrosion and Scaling Evaluation and Control Methods in the Utilization of Produced Water Waste Heat in Oilfields

作　　者：陈丽丽 张光宇 陈晓莎 亢清波 马宁 刘若兮 郑丽坤 尤小虎 赵乾坤 路遥军 吴一凡 刘桂英 Chen Lili;Zhang Guangyu;Chen Xiaosha;Kang Qingbo;Ma Ning;Liu Ruoxi;Zheng likun;You Xiaohu;Zhao Qiankun;Lu Yaojun;Wu Yifan;Liu Guiying(PetroChina North China Oilfield Company;PetroChina Engineering Construction Corporation Beijing Design Branch;PetroChina Engineering Construction Corporation North China Branch)

机构地区：[1]中国石油华北油田分公司,062550 [2]中国石油工程建设有限公司北京设计分公司 [3]中国石油工程建设有限公司华北分公司

出　　处：《油气田环境保护》2025年第2期35-43,共9页Environmental Protection of Oil & Gas Fields

摘　　要：随着零化石采油厂建设的深入开展,华北油田充分利用中高温采出液余热资源进行站场加热炉系统清洁替代。基于换热过程中取热温差大、采出液水质差等因素造成的生产系统腐蚀结垢严重导致项目停运、运行后期维护成本高等问题,华北油田在S转油站高矿化度的采出液余热资源利用项目中,通过化学治理为主、物理治理为辅的全过程腐蚀结垢控制方法,实现该项目平稳运行。围绕该区域采出水在高温利用区间内易腐蚀结垢的关键问题,从改善水质、源头治理角度,成功筛选耐110℃中高温以上的高效缓蚀阻垢剂,确保阻垢率大于95%。在过程管控中,通过优化换热流程,采用单采单注的思路,将中高温采出液与站场生产系统实现物理隔离;其次,创新换热器等关键设备的反冲洗及加药清洗流程,降低设备压差;同时Ti材质设备、合金阀门、管线纳米陶瓷内衬技术的选用提高了项目整体的抗腐蚀及耐酸洗等性能。该项目投产后运行平稳可靠、换热设备实现在线清洗,同时全年减少管线及设备清洗次数30余次,直接经济效益575万元,该方法在油田站场采出液余热资源利用、地热供暖项目中可复制、可推广。With the advancement of zero-fossil oil production plant construction,the North China Oilfield has fully utilized the waste heat resources of medium and high-temperature produced water for clean alternatives in station heating furnace systems.Due to issues such as significant temperature differences in heat exchange,poor water quality of the produced water,and severe corrosion and scaling in the production system,which lead to project shutdowns and high maintenance costs in the later stages of operation,the North China Oilfield implemented a comprehensive corrosion and scaling control method,mainly based on chemical treatment and supplemented with physical treatment,in a high salinity produced water waste heat utilization project at the S transfer oil station.This method enabled smooth operation of the project.To address the key issue of corrosion and scaling in the high-temperature utilization range of produced water in this area,effective corrosion inhibitors and scale inhibitors resistant to temperatures above 110℃ were successfully selected from a source-control perspective to improve water quality.The inhibitors achieved a scale inhibition rate greater than 95%.In process management,heat exchange processes were optimized,and a “single extraction and single injection” approach was adopted to physically isolate medium-and high-temperature produced water from the station's production system.Additionally,an innovative backwashing and chemical cleaning process for key equipment such as heat exchangers was developed to reduce equipment pressure differences.The use of titanium material equipment,alloy valves,and nano-ceramic lining technology for pipelines enhanced the overall corrosion resistance and acid-washing performance of the project.After the project was put into operation,it demonstrated stable and reliable performance,achieving online cleaning of heat exchange equipment.Additionally,the annual frequency of pipeline and equipment cleaning was reduced by more than 30 times,resulting in direct economic

关 键 词：采出液 余热利用 防腐阻垢 评价 控制 

分 类 号：TE988[石油与天然气工程—石油机械设备]