西安石油大学学报（自然科学版）2012，Vol.27Issue(6)：57-60,4.
致密砂岩油藏热水+表活剂驱提高采收率机理及其对产能贡献的定量评价
Enhanced oil recovery mechanisms of "hot water + surfactant" flooding and quantitative evaluation of their contribution to the productivity of tight sandstone reservoirs
摘要
Abstract
Through the laboratory experiment and numerical simulation, enhanced oil recovery mechanisms of " hot water + surfactant" flooding in tight sandstone oil reservoirs of Changqing Oilfield are studied systematically. It is shown that the main enhanced oil recovery mechanisms of hot water flooding are the thermal expansion of crude oil and its effect on relative permeability curve. At the optimal injection temperature of 100 ℃ ,the recovery ratio will be increased to 22. 8% at the end of 20 years from 19. 3% of cold water flooding by hot water flooding,and it was increased by 3.5% ,in which the contribution of thermal expansion and relative permeability curve change is both 42% . The main enhanced oil recovery mechanisms of " hot water + surfactant" flooding are thermal expansion, relative permeability curve change and effect of surfactant on interfacial tension. At the optimal injection temperature of 100 ℃ ,the recovery ratio will be increased to 25. 6% at the end of 20 years from 19. 3% of cold water flooding by " hot water + surfactant" flooding, and it is increased by 6. 3% ,in which the contribution of hot water flooding is 55% ,and the contribution of surfactant flooding is 45%.关键词
致密砂岩油藏/热水驱/表活剂/提高采收率机理/定量评价Key words
tight sandstone reservoir/hot water flooding/surfactant/enhanced oil recovery mechanism/quantitative evaluation分类
能源科技引用本文复制引用
方国庆,樊建明,何永宏,李书恒..致密砂岩油藏热水+表活剂驱提高采收率机理及其对产能贡献的定量评价[J].西安石油大学学报（自然科学版）,2012,27(6):57-60,4.基金项目
国家科技重大专项"低渗、特低渗油气田经济开发关键技术"(编号:2011ZX05013) （编号:2011ZX05013）
