Research Paper Chemical Engineering
The Effect of Inhibitor on Wax Precipitation in Iranian Oil Fields Using Differential Scanning Calorimetry and Microscopy Methods

Hossein Hejazi; Behrouz Bayati; Mohsen Mansouri

Volume 10, Issue 3 , July 2021, Pages 1-19

http://dx.doi.org/10.22050/ijogst.2021.133532

Abstract
  This study investigated the effect of ethylene-vinyl acetate (EVA) as an inhibitor on wax appearance temperature (WAT) of crude oil in the Iranian oil field using the differential scanning calorimetry (DSC) method. The effect of EVA on the morphology of crude oil wax crystals was examined by a system ...  Read More

Research Paper Petroleum Engineering
Experimental Investigation of Permeability Reduction Due to Migration of Non-swelling Clay Minerals

Siavash Ashoori; Ehsan Safavi; Jamshid Moghaddasi; Parvin Kolahkaj

Volume 10, Issue 3 , July 2021, Pages 20-38

http://dx.doi.org/10.22050/ijogst.2021.133602

Abstract
  Formation damage is reported during the secondary and tertiary stages of reservoir lifespan. One of the unpleasant sequences of formation damage caused by fine particles is permeability reduction due to pore plugging and bridging. The fine particles might exist initially in a porous medium or be introduced ...  Read More

Research Paper Petroleum Engineering – Reservoir
Geochemical Investigation of Trace Metals in Crude Oils from Some Producing Oil Fields in Niger Delta, Nigeria

Temple N Chikwe; Mudiaga Onojake

Volume 10, Issue 3 , July 2021, Pages 39-48

http://dx.doi.org/10.22050/ijogst.2021.135210

Abstract
  The geochemical investigation of trace metals in crude oils from some producing oil fields in the Niger Delta, Nigeria, was carried out to ascertain the petroleum source rocks and organic matter deposits. The concentrations of trace metals in crude oil samples obtained from eight producing fields from ...  Read More

Research Paper Petroleum Engineering
Evaluation of a Novel Mechanistic Approach to Predicting Transport of Water and Ions through Shale

Nima Hamidian Shoormasti; Seyyedalireza Tabatabaei-Nezhad

Volume 10, Issue 3 , July 2021, Pages 49-68

http://dx.doi.org/10.22050/ijogst.2021.136167

Abstract
  Shale formations are essential for different disciplines, including wellbore stability studies in petroleum engineering. In shale stability studies, the prediction of transport parameters of water and ions is a significant issue (Farrokhrouz and Asef, 2013). A unique and novel method to address this ...  Read More

Research Paper Petroleum Engineering
Relationship between Asphaltene Adsorption on the Surface of Nanoparticles and Asphaltene Precipitation Inhibition During Real Crude Oil Natural Depletion Tests

Yaser Ahmadi

Volume 10, Issue 3 , July 2021, Pages 69-82

http://dx.doi.org/10.22050/ijogst.2021.136325

Abstract
  Using nanoparticles for adsorbing asphaltene is an efficient method for upgrading actual oil samples compared to other expensive mechanical treatments or even solvents, such as n-pentane and n-heptane, and surfactants. This study uses nickel–zeolite oxide nanoparticles for asphaltene adsorption ...  Read More

Research Paper Petroleum Engineering – Drilling
Estimation of Drilling Mud Weight for Iranian Wells Using Deep-Learning Techniques

Aref Khazaei; Reza Radfar; Abbas Toloie Eshlaghy

Volume 10, Issue 3 , July 2021, Pages 83-98

http://dx.doi.org/10.22050/ijogst.2021.138844

Abstract
  Iran is one of the largest oil and gas producers in the world. Intelligent manufacturing approaches can lead to better performance and lower costs of the well drilling process. One of the most critical issues during the drilling operation is the wellbore stability. Instability of wellbore can occur at ...  Read More

Research Paper Electrical Engineering – Control
Identification of a Surrogate Model for Economic Performance Prediction of Oil Reservoir Production under Waterflooding Process

Karim Salahshoor; Seyed morteza Hoseini

Volume 10, Issue 3 , July 2021, Pages 99-116

http://dx.doi.org/10.22050/ijogst.2021.138845

Abstract
  The model-based optimization of the waterflooding process has found significant scope for improving the economic life-cycle performance of oil fields due to geological and economic uncertainties compared to conventional reactive strategies. This paper proposes a new frequency-based system identification ...  Read More