Laboratory Study, Optimum Formulation of Alkaline-Surfactant-Polymer Flooding

Ivan Efriza, Ivan and W.S Bae, Bae and Sungmin Jung, Sungmin and Ratna Widyaningsih, Ratna (2012) Laboratory Study, Optimum Formulation of Alkaline-Surfactant-Polymer Flooding. In: The Korean Society Of Mineral And Energy Resources Engineers.

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Many studies have shown that formulation of the surfactant/brine/oil system is a key factor governing the performance of microemulsion designed to recover residual oil. In general, the optimal microemulsion can solubilize large quantities of oil and water; in the presence of excess quantities of oil and water, a third surfactant-rich middle phase is formed. The interfacial tensions (IFT) between excess phases and the surfactant-rich phase are both low. Given an oil/brine system from particular reservoir, one can achieve this formulation by varying the surfactant. Different oils, brines, or temperatures require formulations correspondingly altered to maintain optimal conditions. Previous studies have shown that the three-phase region exists over a range of values when one parameter, such as co-solvent concentration, salinity, temperature, etc., is varied systematically (called scan). Some researchers has shown that the optimal formulation for oil recovery closely corresponds to that for which the 1.FT's between the excess oil and water phases and the surfactant-rich phase are equal. An almost equivalent criterion also was shown to be that point in the three-phase region for which the volume of oil solubilized into the middle phase equals the volume of brine. Furthermore, optimum salinity has used as another criterion that is defined as the midpoint of the salinity range for which the system exhibits three phases. These criteria are useful because they permit the screening of microemulsion system using simple laboratory tests. The search for an optimal formulation benefits from understanding of the interrelationship of the important parameters such as salinity, hydrocarbon, alcohol and its concentration, surfactant, and temperature.

Item Type: Conference or Workshop Item (Paper)
Subjects: T Technology > T Technology (General)
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User: Ratna Widyaningsih
Date Deposited: 18 Sep 2017 01:46
Last Modified: 18 Sep 2017 01:46

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