西安石油大学学报（自然科学版）2018，Vol.33Issue(2)：72-76,5.DOI:10.3969/j.issn.1673-064X.2018.02.011
春光油田稠油井筒掺稀降黏室内实验研究
Laboratory Study on Wellbore Dilution Viscosity-reducing of Chunguang Oilfield Heavy Oil
摘要
Abstract
The wellbore dilution viscosity-reducing effect of the heavy oil in Chunguang Oilfield was evaluated by using the self-devel-oped heavy oil wellbore dilution viscosity-reducing evaluation device,the influence of wellbore temperature field on the dilution viscosi-ty-reducing effect was studied,and the dilution position in wellbore and dilution ratio were optimized.The temperature at different posi-tions in wellbore is simulated by the thermostatic waterbath of 90,70,50,40 ℃ to study the dilution viscosity-reducing effect under dif-ferent conditions.The results show that:the viscosity reduction rate of heavy oil is 41% ~69% at 70℃;The viscosity-reducing effect of under-pump dilution is the best compared with upper-pump dilution and pump inlet dilution,and the viscosity reduction rate of heavy oil at the inlet of pump can reach to 86%.In the process of simulating daily output of 6 t,the dilution viscosity-reducing effects under 5 kinds of dilution ratio were compared and analyzed,and it is shown that when the dilution ratio is 18% ~22%,the viscosity of crude oil can meet the requirements of wellbore safety production.关键词
稠油开发/掺稀降黏/掺稀位置/掺稀比Key words
development of heavy oil/dilution viscosity-reducing/dilution position in wellbore/dilution ratio分类
能源科技引用本文复制引用
赵仁保,衡明浩,贾莹莹..春光油田稠油井筒掺稀降黏室内实验研究[J].西安石油大学学报（自然科学版）,2018,33(2):72-76,5.基金项目
国家科技重大专项(2016ZX05012-003) （2016ZX05012-003）
