Seyyed Jamal SAMADI - Petroleum Engineering Department, Petroleum University of Technology, Ahwaz, Iran
Aboozar SOLEYMANZADEH
Amir YARI
Mohamad Ali TAKASI

Interfacial tensions (IFTs) of reservoir fluids, as well as the contact angle are important parameters for many reservoir engineering studies. Both IFT and thecontact angle of the oil/brine/rock system affect the distribution, flow and location of fluids within reservoir rock material and also influence theperformance of flow process in natural drive or when reservoir is flooded by natural water drive. Most of the available data, contact angle and IFT for oil/brinesystems are for room temperature and atmospheric pressure. Since actual values of reservoir temperature and pressure are frequently encountered in oil fieldsimulation models, a need to study IFT and the contact angle at reservoir conditions was recognized. This paper presents the impact of temperature and pressure on the oil/brine interfacial tension and contact angle of Ahwaz Asmari oil reservoir. PendantDrop method with computer-aided image processing and analyzing was used to measure the contact angle. The results show that the IFT values for Asmari oiland brine system increased with increasing pressure and decreasing temperature and also contact angle is increased with increasing the temperature and pressure.

Interfacial Tension, Contact Angle, Pendant Drop method, Pressure, Temperature, Rock Plate