Dynamic Interfacial Tension Between Crude Oil and Novel Surfactant Flooding Systems Without Alkali

• Published in: Petroleum science and technology Vol. 24; no. 12; pp. 1469 - 1476
• Main Authors: Zhao, Zhongkui, Liu, Fei, Li, Zongshi, Qiao, Weihong, Cheng, Lübo
• Format: Journal Article
• Language: English
• Published: Colchester Taylor & Francis Group 01.12.2006; Taylor & Francis
• Subjects: Applied sciences; Crude oil; Crude oil, natural gas and petroleum products; dynamic interfacial tensions; Dynamical systems; Dynamics; Energy; Enhanced oil recovery; EOR; Exact sciences and technology; Flooding; Fuels; Interfacial tension; Petroleum products, gas and fuels. Motor fuels, lubricants and asphalts; Processing of crude oil and oils from shales and tar sands. Processes. Equipment. Refinery and treatment units; Surface tension; surface tensions; Surfactants; tetradecylmethylnaphthalene sulfonate; INW, Bohai Sea, Shengli Oil Field; Additive; surface tensions; Sodium; Crude oil; tetradecylmethylnaphthalene sulfonate; Micelle; EOR; Surface tension; dynamic interfacial tensions; Surfactant; Sulfonate
• ISSN: 1091-6466; 1532-2459
• DOI: 10.1081/LFT-200063045

The surface tensions of tetradecylmethylnaphthalene sulfonate (TMNS) surfactant aqueous solution and the dynamic interfacial tension (DIT) between crude oil, from Shandong Shengli oil field of China, and the surfactant solution without alkaline, was measured. Results indicate that the TMNS surfactant had great capability and efficiency of lowering the solution surface tension. The critical micelle concentration (cmc) is 0.001 mass% and the surface tension at this concentration is 28.19 mN.m −1 . It was also found that the TMNS surfactant is greatly effective in reducing the interfacial tensions and can lower the tension of crude oil-water interface to ultra-low at very low concentration, 0.002 mass%, without alkali and other additives. Both chromatogram separation of flooding and breakage of stratum are avoided effectively. The lower salinity is favorable for the flooding systems, lowering the DIT. The synthesized TMNS surfactant flooding systems without alkali and sodium chloride, decreasing the cost of oil recovery and avoiding the stratum being destroyed, would have a great prospect for enhanced oil recovery (EOR).