孤岛油田污水管网清垢解堵工艺应用
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摘要
孤岛油田在多年的注聚、热采开发过程中,由于聚合物、硫化氢、二氧化碳、溶解氧及细菌等多种成分的综合作用,管线出现严重的腐蚀、结垢,造成污水管线堵塞,使联合站处理后的污水在注水系统沿程中水质不稳定。通过对污水管线堵塞物成分和结垢原因进行分析,开展化学法管线清洗解堵研究,优选反应温和的有机酸进行复配,形成了一套新型化学清垢解堵剂体系。该污水管网清垢解堵工艺能够快速清洗油泥、软化硬垢,清洗效率达到90%以上,在孤五联—孤南注污水外输管线进行现场试验,污水外输能力增加53%,施工方便且符合管线安全作业要求,经济效益显著,对其他管线作业有借鉴价值。
In many years of polymer flooding and thermal recovery in Gudao Oilfield, owing to the comprehensive effects of polymer,hydrogen sulfide,carbon dioxide,dissolved oxygen,bacteria and other ingredients,serious corrosion and scaling of pipelines lead to the blockage of sewage pipelines and the unstable water quality of the sewage treated by multi-purpose stations in water injection system.Through analyzing the ingredients of the sewage pipeline blockage and scaling reasons, the study of chemical pipeline cleaning and blockage removal is developed. Organic acids with mild reaction are selected to compound, and then a new type of chemical cleaning and blockage removal agent system is formed. The process can quickly clean oil sludge and soften hard scale, with a cleaning efficiency of more than 90%.The field test is conducted in Guwulian-Gunanzhu Sewage Transportation Pipeline,and its sewage transportation capacity increases by 53%. The process is convenient to construct,accords with the safe operation requirements of pipelines,has significant economic benefits,and provides a reference value for operation of other pipelines.
In many years of polymer flooding and thermal recovery in Gudao Oilfield, owing to the comprehensive effects of polymer,hydrogen sulfide,carbon dioxide,dissolved oxygen,bacteria and other ingredients,serious corrosion and scaling of pipelines lead to the blockage of sewage pipelines and the unstable water quality of the sewage treated by multi-purpose stations in water injection system.Through analyzing the ingredients of the sewage pipeline blockage and scaling reasons, the study of chemical pipeline cleaning and blockage removal is developed. Organic acids with mild reaction are selected to compound, and then a new type of chemical cleaning and blockage removal agent system is formed. The process can quickly clean oil sludge and soften hard scale, with a cleaning efficiency of more than 90%.The field test is conducted in Guwulian-Gunanzhu Sewage Transportation Pipeline,and its sewage transportation capacity increases by 53%. The process is convenient to construct,accords with the safe operation requirements of pipelines,has significant economic benefits,and provides a reference value for operation of other pipelines.
引文
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[2]王万福,张巧玲,韩专.掺水输油管道不停产化学清垢可行性研究[J].油田地面工程,1995,14(3):24-26.WANG Wanfu,ZHANG Qiaoling,HAN Zhuan,Feasibility study for unceasing production chemical scale removing on mixed water oil transferring pipelines[J].Oil-Gas Field Surface Engineering,1995,14(3):24-26.
[3]陈景军.渤南油田采油污水处理方法研究[J].油田化学,2002,19(2):121-126.CHEN Jingjun.Study on treatment method of oil production wastewater in Bonan Oilfield[J].Oil Field Chemistry.2002,19(2):121-126.
[4]孙舫.江苏油田注水水质腐蚀因素及控制[J].油气田地面工程.1997,16(6):49-52.SUN Fang.Corrosion factors and control of water quality in Jiangsu Oilfield[J].Oil-Gas Field Surface Engineering.1997,16(6):49-52.
[5]朱帅.防清垢技术在萨南油田的应用[J].油气田地面工程,2012,31(8):32-33.ZHU Shuai.Application of cleaning and scale prevention technology in Sanan Oilfield[J].Oil-Gas Field Surface Engineering,2012,31(8):32-33.
[6]纪云岭.注水管线无毒害化学清垢技术[J].油气田地面工程,2003,22(6):34.JI Yunling.Nontoxic chemical scaling technology for water injection pipeline[J].Oil-Gas Field Surface Engineering,2003,22(6):34.
[7]张锡波,张群正,林文兴,等.超声波防垢技术在孤岛油田的现场应用[J].西安石油学院学报(自然科学版),2000,15(3):14-15.ZHANG Xibo,ZHANG Qunzheng,LIN Wenxing,et al.Field application of ultrasonic anti scaling technology in Gudao Oilfield[J].Journal of Xi'an Petroleum Institute(Natural Science Edition),2000,15(3):14-15.
[8]李谦定,刘祥,贾风兰.KYQX-1清垢解堵剂的研制及应用[J].油田地面工程,1994,13(6):40-41.LI Qianding,LIU Xiang,JIA Fenglan.Development and application of scale removal and plugging agent KYQX-1[J].Oil-Gas Field Surface Engineering,1994,13(6):40-41.
[9]赵梦云,赵忠杨,徐聿,等.硫酸钡锶垢清洗剂DS-8及其在油砂山集输管线清垢中的应用[J].油田化学,2001,18(3):241-243.ZHAO Mengyun,ZHAO Zhongyang,XU Yu,et al.Barium and strontium scale cleaning agent DS-8 and its application in scale cleaning of youshashan gathering pipeline[J].Oil Field Chemistry,2001,18(3):241-243.
[10]李世荣,王宏伟,岳潘东.油水井清防垢工艺技术研究[J].油气田地面工程,2008,27(11):32-33.LI Shirong,WANG Hongwei,YUE Pandong,Study on cleaning and scale prevention technology for oil and water wells[J].Oil-Gas Field Surface Engineering,2008,27(11):32-33.