Optimization and evaluation of binary composite foam system with low interfacial tension in low permeability fractured reservoir with high salinity

2018 ◽  
Vol 160 ◽  
pp. 247-257 ◽  
Author(s):  
Chengli Zhang ◽  
Peng Wang ◽  
Guoliang Song ◽  
Guodong Qu ◽  
Jialun Liu
Keyword(s):  
Interfacial Tension ◽  
High Salinity ◽  
Low Permeability ◽  
Fractured Reservoir ◽  
Composite Foam ◽  
Low Interfacial Tension ◽  
Binary Composite

The Laboratory Research on Ultra-Low Interfacial Tension Foam Flooding System with High-Temperature and High-Salinity

2011 ◽  
Vol 71-78 ◽  
pp. 2163-2168 ◽  
Author(s):  
Xin Liang ◽  
Ming Hui Xiang ◽  
Yong Yang ◽  
Qi Hua Chen ◽  
Zeng Rong Shu
Keyword(s):  
High Temperature ◽  
Interfacial Tension ◽  
High Salinity ◽  
Divalent Cations ◽  
Laboratory Research ◽  
Foam Properties ◽  
Order Of Magnitude ◽  
Low Interfacial Tension ◽  
Foam Flooding ◽  
Mixture System

To obtain the ultra-low interfacial tension foam flooding system for the real reservoir condition of high-temperature and high-salinity, foam properties and dynamic interfacial tension had been performed by Ross-miles test and spin drop tension meter respectively. Ten types of surfactants were screened by foamability, stability and interfacial tension (IFT) at 85°C, high-salinity with 800 mg/L divalent cations and 30000 mg/L total mineralization. The AOS, AESO and 20YB were selected to compose further anion-nonionic mixture system. Due to AOS had excellent foam properties, AESO could achieve low interfacial tension and 20YB could improve the film quality. Through series complex study, the ultra-low interfacial tension (10-4 mN/m order of magnitude) foam system was obtained with the composition of 0.15% wt AOS+0.15% wt AESO+0.11%~0.012% wt 20YB for high-temperature and high-salinity, which V foam was 240-235 mL and t 0.5 was 180-190 min. In addition, the synergistic effect of these surfactants had been described.

Ultra-Low Interfacial Tension and Retention of Internal Olefin Sulfonate (IOS) for EOR

2012 ◽  
Vol 550-553 ◽  
pp. 36-39 ◽  
Author(s):  
Li Mei Sun ◽  
Guo Qiang Gao ◽  
Lu Shan Wang ◽  
Zhong Qiang Tian ◽  
Jie Cui ◽  
...  
Keyword(s):  
Porous Media ◽  
Interfacial Tension ◽  
High Salinity ◽  
Carbon Number ◽  
Surfactant Flooding ◽  
Optimal Salinity ◽  
Low Interfacial Tension ◽  
Internal Olefin ◽  
C 50 ◽  
Internal Olefin Sulfonate

Surfactant ultra-low interfacial tension (IFT) for internal olefin sulfonate with iso-amylalcohol (IAA) as co-solvent against heptane, octane and decane at 20 °C, 50 °C, and 90 °C respectively have been systematically investigated, as well as the dynamic retention in porous media. The results show for oils with alkane carbon number from 7 to 10 and temperature from 20 °C to 90 °C, optimal salinity starts from 6.5 wt% to 11.6 wt% NaCl, where ultra-low IFT occurs. While at high salinity (at least from 6 wt% NaCl ), the retention is too high for surfactant flooding to be applicable. Only internal olefin sulfonate with co-solvent alone can not provide a perfect formulation with ultra-low IFT and low retention.

Experimental Study on Low Interfacial Tension Foam for Enhanced Oil Recovery in High-Temperature and High-Salinity Reservoirs

2017 ◽  
Vol 31 (12) ◽  
pp. 13416-13426 ◽  
Author(s):  
Jiaping Tao ◽  
Caili Dai ◽  
Wanli Kang ◽  
Guang Zhao ◽  
Yifei Liu ◽  
...  
Keyword(s):  
Experimental Study ◽  
High Temperature ◽  
Interfacial Tension ◽  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
High Salinity ◽  
Low Interfacial Tension

Research on Oil-Water Interfacial Properties Effect of Polymer / Surfactant Binary Flooding System

2011 ◽  
Vol 201-203 ◽  
pp. 2558-2561 ◽  
Author(s):  
Wen Xiang Wu ◽  
Zhong Qi Yu
Keyword(s):  
Interfacial Tension ◽  
Composite System ◽  
Oil Field ◽  
Compound System ◽  
Addition Agent ◽  
Low Interfacial Tension ◽  
Polymer Compound ◽  
Oil Water ◽  
Polymer Surfactant ◽  
Binary Composite

The formula of surfactant(QY-3、SHSA-HN6、SS) and polymer compound system, and the interfacial characteristics between oil and water of Henan oil field were evaluated, the binary composite system formula adapt to the field was explored. The results show that the binary composite system (surfactant QY-3 and polymer 1630S) and oil-water in Henan can achieve ultra-low interfacial tension(＜10-3mN/m); If the addition agent NaCl was added to the composite system (Surfactant Ss and polymer ZL-Ⅱ or Surfactant Ss and polymer KYPAM) that the interfacial tension between oil and water can be reduced effectively.

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