摘要
根据辽河超稠油的含水状况及原油的性质,对辽河超稠油进行了热化学沉降脱水和电化学脱水实验,并对脱水前后的超稠油进行了表征。结果表明,利用开发的脱水剂和破乳剂的协同作用,无论是否施加电场,脱水速度都明显快于目前辽河油田应用的超稠油热化学沉降脱水速度。特别是电化学脱水工艺,可以在短时间内实现超稠油的深度脱水。利用脱水剂处理后的油品性质得到明显改善,金属含量显著降低,50℃时粘度降低幅度超过40%,改善了油品的储运性能,有利于超稠油的后续加工利用,为辽河超稠油预处理脱水工艺的升级换代提供了新的储备技术。
According to the analyses of water status and the nature of extra-heavy crude oil in Liaohe Oilfield, the thermalchemical and electric-chemical deaquation experiments were carried out, and the extra-heavy crude oil samples with and without deaquation processing were characterized. The experimental results demonstrate that with the synergetic effect of the dehydrant and demulsifier, the deaquation rate of the extra-heavy crude oil is obviously higher than that of the thermalchemical deaquation process used in the commercial deaquation for extra-heavy crude oil at present, whether or not exists the electric field. Especially, the electric-chemical deaquation process could achieve the deep deaquation effect in relative less time for the extra-heavy crude oil. The processed extra-heavy crude oil property with the dehydrant was improved. For the processed crude oil samples, the metal content was obviously decreased and the viscosity could be decreased by 40% at 50 ℃, which improves the hydraulic behaviors of oil samples, and is beneficial to the downstream processing. Therefore this new technique would become the alternative technique that is suitable for extra-heavy crude oil pretreatment in Liaohe Oil- field.
出处
《中国石油大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2006年第4期123-125,131,共4页
Journal of China University of Petroleum(Edition of Natural Science)
关键词
超稠油
预处理
脱水
脱水剂
extra-heavy crude oil
pretreatment
deaquation
dehydrant
