Petroleum Engineering – Reservoir
1. An Experimental Investigation of Water Effects on Asphaltene Surface Behavior through Interfacial Tension Measurements

Ramin Moghadasi; Jamshid Moghadasi; Shahin Kord

Volume 7, Issue 4 , Autumn 2018, , Pages 45-58

http://dx.doi.org/10.22050/ijogst.2018.108233.1422

Abstract
  As a physiochemical property, asphaltenes are known to be one the most surface active compounds in crude oil. Due to such property, their behavior is most probably influenced by fluid-fluid interactions at the contact surface (interface). Potentially and naturally, in most cases, water is in contact ...  Read More

2. A Novel Technique for Determination of the Onset of Alkane Induced Asphaltene Precipitation Using Accurate Density Measurements

Mahdi Kalantari Meybodi; Jamshid Moghadasi

Volume 5, Issue 4 , Autumn 2016, , Pages 25-35

http://dx.doi.org/10.22050/ijogst.2016.41573

Abstract
  Onset of asphaltene precipitation is the key parameter in dealing with asphaltene problems because it is the starting point of the asphaltene separation from the solution. In this study, a new technique is provided based on the experimental observations for the determination of the onset of asphaltene ...  Read More

3. An Experimental Study on Permeability Reduction Resulting from Mixed BaSO4, CaSO4, and SrSO4 Scale Deposition in Porous Media during Water Injection

Saeed Naseri; Jamshid Moghadasi; Mohammad Jamialahmadi

Volume 4, Issue 4 , Autumn 2015, , Pages 33-49

http://dx.doi.org/10.22050/ijogst.2016.12478

Abstract
  Sulfate scale deposition (BaSO4, CaSO4, and SrSO4) is a common problem in oilfield operations around the world, which causes significant formation damage during production and injection activities. This paper presents the results of an experimental study on the permeability reduction of porous media ...  Read More

4. A Laboratory Investigation into Wettability Alteration of Carbonate Rock by Surfactants: The Effect of Salinity, pH, and Surfactant Concentration

Mohsen Seid Mohammadi; Jamshid Moghadasi; Amin Kordestany

Volume 3, Issue 3 , Summer 2014, , Pages 1-10

http://dx.doi.org/10.22050/ijogst.2014.6617

Abstract
  Wettability alteration is an important method for increasing oil recovery from oil-wet carbonate reservoirs. Chemical agents like surfactants are known as wettability modifiers in carbonate systems. Oil can be recovered from initially oil-wet carbonate reservoirs by wettability alteration from oil-wet ...  Read More

5. An Experimental Investigation of Wettability Alteration in Carbonate Reservoir Using γ-Al2O3 Nanoparticles

Mohsen Seid Mohammadi; Jamshid Moghadasi; Saeed Naseri

Volume 3, Issue 2 , Spring 2014, , Pages 18-26

http://dx.doi.org/10.22050/ijogst.2014.6034

Abstract
  Wettability alteration is one of the most important methods for oil recovery from sandstone and carbonate reservoirs. The effects of salinity, pH, temperature, and chemicals such as surfactants and fatty acids on the alteration of the wettability were described in previous studies. In recent years, attention ...  Read More

6. A New Approach to Measuring Cementation Factor by Using an Intelligent System

Hamid Heydari; Jamshid Moghadasi; Reza Motafakkerfard

Volume 2, Issue 4 , Autumn 2013, , Pages 39-53

http://dx.doi.org/10.22050/ijogst.2013.4795

Abstract
  Cementation factor is a critical parameter, which affects water saturation calculation. In carbonate rocks, due to the sensitivity of this parameter to pore type, water saturation estimation has associated with high inaccuracy. Hence developing a reliable mathematical strategy to determine these properties ...  Read More