不同来源老化油物性分析及热化学脱水参数优选实验研究  

Analysis of Physical Properties of Aged Oil from Different Sources and Experimental Study on Optimizing Thermochemical Dehydration Parameters

作　　者：侯昊天 刘保君[1] 孙旭 HOU Haotian;LIU Baojun;SUN Xu(School of Petroleum Engineering,Northeast Petroleum University,Daqing Heilongjiang 163318,China)

机构地区：[1]东北石油大学石油工程学院,黑龙江大庆163319

出　　处：《当代化工》2024年第6期1508-1512,共5页Contemporary Chemical Industry

基　　金：黑龙江省自然科学基金项目(项目编号:LH2020E015)。

摘　　要：随着油田开发阶段的推进,大量油田化学剂的使用、硫酸盐还原菌繁殖和集输系统内絮状物的富集等因素,使得原油乳状液稳定性增强,形成了难处理的老化油。老化油相比正常原油组分差异较大,从而导致老化油的凝点、密度、黏度等物性要比正常原油高,使得老化油破乳困难。以多种来源老化油为研究对象,通过对多种来源的老化油与常规原油的杂质含量、硫化亚铁含量、胶质、沥青质含量等组分进行分析,研究老化油的组分对凝点、密度、黏度等物性的影响,从而分析老化油相比于常规原油难处理的原因。开展室内热化学实验,对不同来源老化油的混合油进行了破乳剂及破乳参数优选。结果表明:老化油中饱和烃、芳烃等轻质组分多数挥发,胶质、沥青质等重质组分增加,导致凝点、密度、黏度等物性高于正常原油,使得老化油更难处理。热化学实验从10种破乳剂中筛选出了脱水效果较好的破乳剂AP-8736,最终确定其最佳的处理温度为65℃、加药质量浓度200 mg·L^(-1)。The advancement of the oilfield development stage,the use of a large number of oilfield chemicals,the reproduction of sulfate-reducing bacteria,the enrichment of flocs in the gathering and transportation system and other factors enhances the stability of the crude oil emulsion and forms the aged oil that is difficult to treat.Aged oil has a significant difference in composition compared to normal crude oil,resulting in higher physical properties such as pour point,density,and viscosity,making it difficult for aged oil to demulsify.In this article,taking aged oil from multiple sources as the research object,by analyzing the impurity content,ferrous sulfide content,resin,asphaltene content,and other components of aged oil from multiple sources and conventional crude oil,the influence of aged oil components on physical properties such as pour point,density,and viscosity was studied.Indoor thermochemical experiments were conducted to optimize demulsifiers and demulsification parameters for mixtures of aged oils from different sources.The results showed that most of the light components such as saturated hydrocarbons and aromatics in the aged oil evaporated,while heavy components such as resins,asphaltenes,and flocs increased.At the same time,due to the large number of small impurity particles in the aged oil,the physical properties such as pour point,density,and viscosity were higher than those of normal crude oil.The thermochemical experiment screened out AP-8736,a demulsifier with better dehydration effect from 10 types of demulsifiers.The optimal treatment temperature and mass concentration were ultimately determined to be 65℃and 200 mg·L^(-1).

关 键 词：老化油 物性分析 老化成因 热化学脱水 

分 类 号：TE65[石油与天然气工程—油气加工工程] TQ207[化学工程—有机化工]