Nafta, Vol. 61 No. 4, 2010.
Pregledni rad
Effect of pH-values on the contact angle and interfacial tension
Abdul Aziz Saleh Al-Rossies
; Arabian Company for Water And Power Project
Bandar Duraya Al-Anazi
; Research Assistant ,King Abdulaziz City for Science & Technology
Abouzar Mirzaei Paiaman
; Sharif University of Technology
Sažetak
As the reservoir production continues, the reservoir pressure is reduced with time and some of the reservoir oil remains as a residue that cannot be produced by classic means. Enhancing oil recovery (EOR) techniques; in this period of reservoir life; become more and more important due to the increase in demand of the world for energy.
Numerous EOR techniques are used in order to increase the oil recovery. One of the effective EOR techniques is the surfactant flooding. Surfactant is used to reduce the interfacial tension (IFT) between oil/water allowing them to mix and being displaced as one phase. But it is known that the surfactant is very expensive.
However, using surfactant is not the only way to reduce the IFT. Generally, the reservoir oil is acidic by nature, and it contains a nature surface active agents. So, mixing the oil which is acidic by an alkaline will form in-situ surfactant that will reduce the IFT between oil/water. This process is called as "Alkaline Flooding" which is one of the useful EOR techniques and economically efficient than using the expensive surfactant.
Reducing the IFT is our objective to enhance the oil recovery. Therefore, a literature review of surface tension and IFT, factors affecting the IFT, alkaline flooding technique, and effect of pH on the IFT are included.
Furthermore, experimental work is done for viscosity using the Brookfield viscometer, IFT by Digital densitometer K-10 to show the effect of pH on the IFT, and density is measured also.
Three samples are used for experimental work. Arabian light sample, Udheiliyah sample, and finally Asphaltenic oil sample.
Ključne riječi
enhancing oil recovery; surfactant flooding; alkaline flooding; viscosity; density
Hrčak ID:
52263
URI
Datum izdavanja:
30.4.2010.
Posjeta: 7.675 *