Petroleum Engineering
1. Foam Application in Fractured Carbonate Reservoirs: A Simulation Study

Ahmed Zoeir; Mohammad Chahardowli; Mohammad Simjoo

Volume 8, Issue 4 , Autumn 2019, , Pages 18-34

http://dx.doi.org/10.22050/ijogst.2019.147229.1476

Abstract
  Fractured carbonate reservoirs account for 25% of world’s total oil resources and for 90% of Iranian oil reserves. Since calcite and dolomite minerals are oil wet, gas oil gravity drainage (GOGD) is known as the most influencing production mechanism. The most important issue within gas injection ...  Read More

Petroleum Engineering – Reservoir
2. Characterization of Liquid Bridge in Gas/Oil Gravity Drainage in Fractured Reservoirs

Behrouz Harimi; Mohsen Masihi; Mohammad Hosein Ghazanfari

Volume 8, Issue 2 , Spring 2019, , Pages 73-91

http://dx.doi.org/10.22050/ijogst.2018.140366.1465

Abstract
  Gravity drainage is the main mechanism which controls the oil recovery from fractured reservoirs in both gas-cap drive and gas injection processes. The liquid bridge formed between two adjacent matrix blocks is responsible for capillary continuity phenomenon. The accurate determination of gas-liquid ...  Read More

3. An Estimation of Wave Attenuation Factor in Ultrasonic Assisted Gravity Drainage Process

Behnam Keshavarzi; Mohammad Javad Shojaei; Mohammad Hossein Ghazanfari; Cyrus Ghotbi

Volume 3, Issue 1 , Winter 2014, , Pages 22-33

http://dx.doi.org/10.22050/ijogst.2014.5798

Abstract
  It has been proved that ultrasonic energy can considerably increase the amount of oil recovery in an immiscible displacement process. Although many studies have been performed on investigating the roles of ultrasonic waves, based on the best of our knowledge, little attention has been paid to evaluate ...  Read More

4. Investigating the Effects of Heterogeneity, Injection Rate, and Water Influx on GAGD EOR in Naturally Fractured Reservoirs

Misagh Delalat; Riyaz Kharrat

Volume 2, Issue 1 , Winter 2013, , Pages 9-21

http://dx.doi.org/10.22050/ijogst.2013.3034

Abstract
  The gas-assisted gravity drainage (GAGD) process is designed and practiced based on gravity drainage idea and uses the advantage of density difference between injected CO2 and reservoir oil. In this work, one of Iran western oilfields was selected as a case study and a sector model was simulated based ...  Read More