西安石油大学学报（自然科学版）2019，Vol.34Issue(2)：54-59,6.DOI:10.3969/j.issn.1673-064X.2019.02.008
特低渗油藏氮气泡沫驱油效率实验研究及其现场应用
Experimental Study of Nitrogen Foam Flooding Efficiency in Ultra-lowPermeability Reservoirs and Its Field Application
摘要
Abstract
In order to further enhance the oil recovery of ultra-low permeability JD oilfield, nitrogen foam flooding efficiency experiment was carried out under simulated reservoir conditions, and the effects of injection mode, injection volume, injection rate and gas-to-liquid ratio on nitrogen foam flooding efficiency were studied. The results show that: after water flooding, gas-water alternating flooding is easy to form channeling, and the plugging effect is not good ; Nitrogen foam flooding efficiency is higher than pure nitrogen flooding efficiency; the alternating injection of nitrogen and foaming agent solution is more suitable for this area than the mixing injection of them ;The increment of recovery degree increases first and then decreases with the increase of injection rate; When the gas-liquid ratio is 1: 1 ,the increment of overall recovery degree increases the most. The optimuru injection slug amount is 0. 10 PV 0. 33% foaming agent solution + 0.10 PV nitrogen + 0.03PV formation water + 0.10 PV 0.33 % foaming agent solution + 0. 10 PV nitrogen + 0. 03 PV formation water, and the optimum injection rate of the slugs is 0. 03 mL/min. Field tests show that nitrogen foam flooding can effectively improve oil recovery.关键词
特低渗油藏/氮气泡沫驱/长岩心/注入参数Key words
extra low permeability reservoir/ nitrogen foam flooding/ long core/ injection parameter分类
能源科技引用本文复制引用
张泉,付美龙,孙晶,廖月敏..特低渗油藏氮气泡沫驱油效率实验研究及其现场应用[J].西安石油大学学报（自然科学版）,2019,34(2):54-59,6.基金项目
"十三五"国家科技重大专项(2016ZX05014-005-006) （2016ZX05014-005-006）
