新型溶垢解堵技术在西部油田某转油站外输管线的应用效果研究  

Application Effect of New Scale-dissolving and Block-removal Technology in the Export Pipeline of an Oil Transfer Station

作　　者：马超[1] 李小龙 鲜俊[1] 夏明明[1] 李丹平 范磊 MA Chao;LI Xiaolong;XIAN Jun;XIA Mingming;LI Danping;FAN Lei(PetroChina Tarim Oilfield Company, Korla, Xinjiang 841000, China;State Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials, CNPC Tubular Goods Research Institute, Xi′an, Shaanxi 710077, China;Xi′an Changli Oil & Gas Engineering Technology Service Co. Ltd., Xi′an, Shaanxi 710065, China)

机构地区：[1]中国石油天然气股份有限公司塔里木油田分公司,新疆库尔勒841000 [2]中国石油集团工程材料研究院有限公司,石油管材及装备材料服役行为与结构安全国家重点实验室,陕西西安710077 [3]西安长立油气工程技术服务有限公司,陕西西安710065

出　　处：《石油管材与仪器》2022年第2期30-33,共4页Petroleum Tubular Goods & Instruments

基　　金：国家自然科学基金青年科学基金项目“固态NH4Cl与无氧水蒸汽协同作用下加氢换热器腐蚀与防护理论研究”(编号52101114);中国石油科学研究与技术开发项目“炼油化工水冷器等防腐工艺及泄漏在线监测技术开发与应用”(编号:2019D-2311)和“金属阳离子基三维凝胶分子聚电解质储能材料开发”(编号:2020Z-07)

摘　　要：西部油田某转油站外输管线及阀组管线材质为20#钢,规格为Φ219 mm×6.5 mm,针对油站外输管线腐蚀、结垢严重及无法通球的问题,开发了新型缓蚀阻垢剂。用SEM-EDS、红外光谱以及XRD等检测方法分析了垢样的组成及含量,用静态失重法评价了缓蚀阻垢剂的缓蚀性能,用阻垢性能试验评价了缓蚀阻垢剂对现场所取垢样的阻垢率,并且完成现场应用。结果表明,垢样的主要组成为CaCO_(3)、SiO_(2)和BaSO_(4),当缓蚀阻垢剂加量为50 mg/L时,在50℃的模拟溶液中静置72 h,20^(#)钢的平均腐蚀速率为0.0373 mm/a,缓蚀阻垢剂对CaCO_(3)垢型、SiO_(2)垢型和BaSO_(4)垢型的平均阻垢率分别为92.8%、91.1%和92.2%。该缓蚀阻垢剂的性能优异,现场通过高浓度溶垢+低浓度阻垢的工艺达到了溶垢解堵的目的。The material of the export pipeline and valve group pipeline of an oil transfer station in western oil field is 20#steel,with pipe specification ofΦ219 mm×6.5 mm.In view of problems including serious corrosion and scaling and failure to pass balls,a new type of corrosion inhibitor and scale inhibitor was developed.The composition and content of the scale samples were analyzed by SEM-EDS,infrared spectroscopy and XRD,the corrosion inhibition performance of the inhibitor was evaluated by static weight loss method,the scale inhibition rate of the inhibitor was evaluated by scale inhibition performance test,and the field application was completed.The results show that the scale samples are mainly composed of CaCO_(3),SiO_(2) and BaSO_(4).The average corrosion rate of 20#steel is 0.0373 mm/a when the amount of corrosion inhibitor is 50 mg/L and the scale inhibitor is kept in the simulated solution at 50℃for 72 h.The average scale inhibition rates against CaCO_(3),SiO_(2) and BaSO_(4) are 92.8%,91.1%and 92.2%,respectively.The corrosion and scale inhibitor has excellent performance,and the technology of scale-dissolving with high concentration and scale inhibitation with low concentration of inhibitor can achieve the purpose of scale-dissolving and block-removal.

关 键 词：缓蚀阻垢剂 外输管线 溶垢解堵 阻垢 

分 类 号：TE988[石油与天然气工程—石油机械设备]