A Study of Lyotropic Liquid Crystal Flooding System and Its Research at Enhanced Oil Recovery

Abstract

Abstract: The phase diagram of the petroleum sulfonate/pentanol/water ternary system and petroleum sulfonate/pentanol/decane/water quarternary system have been established at 25 ℃. ²H NMRspectroscopy and rheological method have been used to determine the structure which is the hexagon lyotropic liquid crystal. The results show that the areas of the liquid crystal become gradually small with the contents of decylane under a certain temperature 25 ℃. Furthermore, the lyotropic liquid crystal systems are used in place of alkaline/surfactant/polymer complicated system for ternary oil recovery. The coreflood test in the laboratory of the liquid crystal system resulted in a greater recovery of crude oil as compared to ASP(alkaline, surfactant and polymer) flooding system.

Key words: Lyotropic liquid crystal, Oil recovery, Phase diagram

CLC Number:

O753⁺.2

TrendMD:

LI Gan-Zuo, XIAO Hong-Di, LI Ying, MU Jian-Hai, WANG Lian-Wei . A Study of Lyotropic Liquid Crystal Flooding System and Its Research at Enhanced Oil Recovery[J]. Chem. J. Chinese Universities, 2001, 22(1): 108.

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A Study of Lyotropic Liquid Crystal Flooding System and Its Research at Enhanced Oil Recovery

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