Analysis on Capillary Pressure Curves by Wettability Modification through Surfactants

Prince Julius; P  N  Ananthanarayanan  and G  Anbazhagan

doi:10.17485/ijst/2015/v8i14/70682

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Analysis on Capillary Pressure Curves by Wettability Modification through Surfactants

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Indian Journal of Science and Technology

DOI: 10.17485/ijst/2015/v8i14/70682

Year: 2015, Volume: 8, Issue: 14, Pages: 1-4

Original Article

Analysis on Capillary Pressure Curves by Wettability Modification through Surfactants

Prince Julius^1*, P. N. Ananthanarayanan¹ and G. Anbazhagan²

¹Department of Petroleum Engineering, Amet University, Chennai - 603112, Tamil Nadu, India; [email protected]

²Bharath University, Chennai - 600073, Tamil Nadu, India

This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

Wettability of a reservoir rock is closely related to capillary pressure curves. The status of wettability is an important factor for oil recovery, can be clearly seen through the variations in capillary pressure curves. The aim is to analyze the changes in capillary pressure curves and saturations by altering wettability. An oil wet core sample was tested to alter wettability. During alteration process it is difficult to analyze the status of wettability. Surfactants were applied to modify wettability. Additionally, parameters like connate water saturation, spontaneous oil and water saturations, residual oil saturation and type of wettability can be analyzed. The concentration of surfactants was selected by conductivity test. The changes in saturations with variations in capillary pressure curves were stated.

Keywords: Adsorption Anionic Surfactant, Capillary Pressure Curves, CMC, Wettability