稠油掺稀热化学脱水工艺参数优化  

Optimization of process parameters for thermochemical dehydration of heavy oil with dilution

作　　者：寇杰[1] 钟齐斌 曹亚鲁[2] KOU Jie;ZHONG Qibin;CAO Yalu(College of Pipeline and Civil Engineering in China University of Petroleum(East China),Qingdao 266580,China;Offshore Oil Production Factory,Shengli Oilfield Branch Company,SINOPEC,Dongying 257237,China)

机构地区：[1]中国石油大学(华东)储运与建筑工程学院,山东青岛266580 [2]中国石化胜利油田分公司海洋采油厂,山东东营257237

出　　处：《中国石油大学学报（自然科学版）》2022年第5期189-194,共6页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家自然科学基金项目(51774311)。

摘　　要：针对胜利稠油黏度较高、联合站稠油脱水能耗大的问题,对胜利油田某联合站稠油进行掺稀热化学脱水工艺参数的优化研究。通过破乳剂优选试验,对比10种常用原油破乳剂,选出脱水性能较好的水溶性原油破乳剂PR-929。研究掺稀比、脱水温度和破乳剂浓度等因素对稠油乳状液脱水效果的影响及其机制。结果表明:提高掺稀比和脱水温度均能改善乳状液脱水效果;随着破乳剂浓度的增加,乳状液脱水效果先增后减;在原油外输含水率低于2%和提高经济效益前提下,当掺稀比为1.0、脱水温度为80℃、破乳剂质量浓度为120 mg/L、沉降时间为24 h时,稠油掺稀热化学脱水效果最佳;优化后每年能节省费用约382.2万元。The optimization of the process parameters of thermochemical dehydration of heavy oil with dilution in a central processing station in Shengli Oilfield was studied in order to resolve the problems of high viscosity of Shengli heavy oil and high energy consumption of heavy oil dehydration.Through demulsifier optimization experiment,the water-soluble crude oil demulsifier PR-929 with better dehydration performance was selected by comparing ten common crude oil demulsifiers.The effects of dilution ratio,dehydration temperature and demulsifier concentration on the dehydration of heavy oil emulsion and its mechanism were studied.The results show that increasing the dilution ratio and dehydration temperature can improve the dehydration effect of emulsion.With the increase of demulsifier concentration,the dehydration effect of emulsion first increases and then decreases.On the premise that the water content of crude oil is lower than 2% and the economic benefit is improved,when the dilution ratio is 1.0,the dehydration temperature is 80 ℃,the mass concentration of demulsifier is 120 mg/L,and the settling time is 24 h,the effect of the thermochemical dehydration of heavy oil with dilution is the best.After optimization,the annual cost can be saved about 3.822 million yuan.

关 键 词：稠油脱水 参数优化 节能降耗 

分 类 号：TE624.1[石油与天然气工程—油气加工工程]