基于聚氧化烷基化合物的商业破乳剂对Sarybulak油田油水乳液的有效性评价

IF 0.3 Q4 CHEMISTRY, MULTIDISCIPLINARY Chemical Bulletin of Kazakh National University Pub Date : 2022-09-20 DOI:10.15328/cb1282
A. Adilbekova, Saidulla Faizullayev, W. Kujawski
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引用次数: 0

摘要

水和油乳液的形成是在石油开采和加工过程中发生的一个自然过程。哈萨克斯坦的重油形成高度稳定的油乳液,主要由高含量的沥青质、树脂和其他表面活性成分稳定。水包油乳液会引发设备腐蚀并导致运输问题。油乳液的脱水在经济上是合理的,并且需要适用于任何类型油的通用技术。本研究测定了Sarybulak油田原油的化学成分,并将Basorol牌商业破乳剂应用于这些油包水乳液中。测定了天然稳定剂(沥青质和树脂)的含量,并将其与红外光谱数据相关联。最后,根据不同的破乳剂的结构,对其效果进行了比较和说明。研究发现,破乳剂的相对溶解度越高,则认为油包水乳液的分离效率和脱水机理越好。水分离结果表明,Basorol PE-10400和PE-10500是最有效的,在60°C下处理1小时时,对30%(体积)油包水乳液的DE分别为96%和91%。
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Evaluation of the effectiveness of commercial demulsifiers based on polyoxyalkylated compounds in relation to oil and water emulsions of the Sarybulak oilfield
Water and oil emulsion formation is a natural process that takes place during oil recovery and processing. Heavy oils of Kazakhstan form highly stable oil emulsions mostly stabilized by a high content of asphaltenes, resins, and other surface-active components. Oil-in-water emulsions initiate the corrosion of equipment and cause transportation issues. Dewatering of oil emulsions is economically reasonable and requires universal techniques which could be applied to any sort of oil. In this study, the chemical composition of crude oil from the Sarybulak oilfield was determined, and commercial demulsifiers of Basorol brand were applied to these water-in-oil emulsions. The natural stabilizers content (asphaltenes and resins) was determined and correlated with IR-spectrum data. Finally, the effectiveness of demulsifiers is compared and explained according to their structures. It has been found that the higher the relative solubility number of the demulsifier, the better water-in-oil emulsion separation efficiency and dewatering mechanism was assumed. Results of water separation showed that Basorol PE-10400 and PE-10500 are the most effective, with DE of 96% and 91%, respectively, for 30% (vol.) water-in-oil emulsion at 60°C during 1-hour treatment.
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审稿时长
10 weeks
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