Impact of Ultra-Low Interfacial Tension on Enhanced Oil Recovery of Ultra-Low Permeability Reservoir
作者： Qianqian Gu , Zhimei Si , Lin Zhao , Aifen Li , Haojun Xie
DOI: 10.3968/J.APED.1925543820120401.721
关键词:
摘要: Ultra-low permeability reservoirs have the characteristics of complex pore throat structure, generally higher injection pressure and lower oil recovery. By means casting thin sections, structure selected ultra-low core was surveyed. The classified into low porosity, without natural fractures. Vast majority throats varied in width from 2.5 μm to 15 μm. Core displacement experiments showed that surfactant flooding could certain effect reducing enhancing When interfacial tension 5.93×10-2 mN/m, decompression rate reached 7.65%, recovery improved by 4.09%. And when 4.9×10-5 25%, 11.6%. is, better extent is. In general, surfactants a great application prospect on field development reservoir, should be reduced as far possible. Key words: Low permeability; Surfactant; Interfacial tension; Emulsion; Enhancing
cscanada.net参考文章(17)
Kevin C. Taylor, Blaine F. Hawkins, M. Rafiq Islam, Dynamic Interfacial Tension In Surfactant Enhanced Alkaline Flooding Journal of Canadian Petroleum Technology. ,vol. 29, ,(1990) , 10.2118/90-01-05
Qiang Liu, Mingzhe Dong, Shanzhou Ma, Alkaline/Surfactant Flood Potential in Western Canadian Heavy Oil Reservoirs SPE/DOE Symposium on Improved Oil Recovery. ,(2006) , 10.2118/99791-MS
Z LIANBO, Q JIAFU, L YUEGANG, The Relationship between Fractures and Tectonic Stress Field in the Extra Low-Permeability Sandstone Reservoir at the South of Western Sichuan Depression Journal of China University of Geosciences. ,vol. 18, pp. 223- 231 ,(2007) , 10.1016/S1002-0705(08)60003-5
Edin Alagic, Arne Skauge, Combined Low Salinity Brine Injection and Surfactant Flooding in Mixed−Wet Sandstone Cores Energy & Fuels. ,vol. 24, pp. 3551- 3559 ,(2010) , 10.1021/EF1000908
Villiam Bortolotti, Paolo Macini, Falan Srisuriyachai, Wettability Index of Carbonatic Reservoirs and EOR: Laboratory Study to Optimize Alkali and Surfactant Flooding International Oil and Gas Conference and Exhibition in China. pp. 1- 12 ,(2010) , 10.2118/131043-MS
A. Seethepalli, B. Adibhatla, K.K. Mohanty, Wettability Alteration During Surfactant Flooding of Carbonate Reservoirs SPE/DOE Symposium on Improved Oil Recovery. ,(2004) , 10.2118/89423-MS
Bhargaw Adibhatla, Kishore Kumar Mohanty, Simulation of surfactant-aided gravity drainage in fractured carbonates annual simulation symposium. ,(2007) , 10.2118/106161-MS
Zeng Baoquan, Cheng Linsong, Hao Fei, Experiment and Mechanism Analysis on Threshold Pressure Gradient with Different Fluids Nigeria Annual International Conference and Exhibition. ,(2010) , 10.2118/140678-MS
Kshitij Mohan, Alkaline Surfactant Flooding for Tight Carbonate Reservoirs SPE Annual Technical Conference and Exhibition. ,(2009) , 10.2118/129516-STU
Panqing Gao, Daiyin Yin, Xin Zhao, Investigation of a New Simulator for Surfactant Floods in Low Permeability Reservoirs and Its Application in Chao-522 Field, 2010 Update SPE EOR Conference at Oil & Gas West Asia. ,(2010) , 10.2118/128645-MS