1. The Effect of Temperature and Injection Rate during Water Flooding Using Carbonate Core Samples: An Experimental Approach

Yaser Ahmadi; Mehdi Hassanbeygi; Riyaz Kharrat

Volume 5, Issue 4 , Autumn 2016, , Pages 18-24

http://dx.doi.org/10.22050/ijogst.2016.41569

Abstract
  In many reservoirs, after water flooding, a large volume of oil is still left behind. Hot water injection is the most basic type of thermal recovery which increase recovery by improved sweep efficiency and thermal expansion of crude.In the present work, the effects of injection rate and the temperature ...  Read More

2. Asphaltene Deposition Modeling during Natural Depletion and Developing a New Method for Multiphase Flash Calculation

Gholamreza Fallahnejad; Riyaz Kharrat

Volume 5, Issue 2 , Spring 2016, , Pages 45-65

http://dx.doi.org/10.22050/ijogst.2016.15798

Abstract
  The specific objective of this paper is to develop a fully implicit compositional simulator for modeling asphaltene deposition during natural depletion. In this study, a mathematical model for asphaltene deposition modeling is presented followed by the solution approach using the fully implicit scheme. ...  Read More

4. Stability of Silica Nanoparticle Dispersion in Brine Solution: An Experimental Study

Jaber Esmaeeli Azadgoleh; Riyaz Kharrat; Nasim Barati; Ameneh Sobhani

Volume 3, Issue 4 , Autumn 2014, , Pages 26-40

http://dx.doi.org/10.22050/ijogst.2014.7485

Abstract
  Nanotechnology has various applications in oil and gas industry such as enhanced oil recovery (EOR). The main challenge in using nanoparticles in EOR processes is their stability in harsh conditions such as high temperature, high pressure, and intermediate to high salinity. However, most of the recent ...  Read More

5. Fluid Injection Optimization Using Modified Global Dynamic Harmony Search

Mohammad Khalili; Riyaz Kharrat; Karim Salahshoor; Morteza Haghighat sefat

Volume 2, Issue 3 , Summer 2013, , Pages 57-72

http://dx.doi.org/10.22050/ijogst.2013.3645

Abstract
  One of the mostly used enhanced oil recovery methods is the injection of water or gas under pressure to maintain or reverse the declining pressure in a reservoir. Several parameters should be optimized in a fluid injection process. The usual optimizing methods evaluate several scenarios to find the best ...  Read More

6. 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