Petroleum Engineering
151. An Investigation of Oil Spreading Coefficient in Carbonated Water+ Gas + Oil System: an Experimental Study in an Iranian Asphaltenic Oil Reservoir

Abdolah Golkari; Masoud Riazi; Amin Avazpour

Volume 7, Issue 2 , Spring 2018, , Pages 64-78

http://dx.doi.org/10.22050/ijogst.2017.91564.1395

Abstract
  To provide supplementary oil recovery after the primary and secondary processes, enhanced oil recovery (EOR) techniques are introduced. Carbonated water injection (CWI) as an EOR method can improve sweep efficiency and the risk of gas leakage. On the other hand, the interfacial tension (IFT) is one of ...  Read More

Chemical Engineering
152. An Investigation into the Effect of Hydrotalcite Calcination Temperature on the Catalytic Performance of Mesoporous Ni-MgO-Al2O3 Catalyst in the Combined Steam and Dry Reforming of Methane

Gholamreza Roohollahi; Mohammadreza Ehsani

Volume 8, Issue 4 , Autumn 2019, , Pages 64-84

http://dx.doi.org/10.22050/ijogst.2018.132105.1456

Abstract
  Several mesoporous nickel-based catalysts with MgO-Al2O3 as the catalyst support were prepared using a co-precipitation method at a constant pH. The supports were prepared from the decomposition of an Mg-Al hydrotalcite-like structure which had already been prepared with Mg/Al=1. Prior to impregnating ...  Read More

153. Three-component Distillation Columns Sequencing: Including Configurations with Divided-wall Columns

Amirhossein Khalili-Garakani; Javad Ivakpour; Norollah Kasiri

Volume 5, Issue 2 , Spring 2016, , Pages 66-83

http://dx.doi.org/10.22050/ijogst.2016.15799

Abstract
  In the present work, the exergy analysis and economic study of 3 different samples of threecomponent mixtures have been investigated (ESI>1, ESI≈1, and ESI<1). The feed mixture has been tested under three different compositions (low, equal, and high contents of the intermediate component). ...  Read More

Mechanical Engineering
154. Effect of Surface Roughness on Vortex Length and Efficiency of Gas-oil Cyclones through CFD Modelling

Seyed Masoud Vahedi; Farzad Parvaz; Mohsen Khandan Bakavoli; Mohammad Kamali

Volume 9, Issue 1 , Winter 2020, , Pages 68-84

http://dx.doi.org/10.22050/ijogst.2018.102377.1417

Abstract
  Separation of suspended droplets in a fluid flow has been a great concern for scientists and technologists. In the current study, the effect of the surface roughness on flow field and the performance of a gas-oil cyclone is studied numerically. The droplets and the turbulent airflow inside the cyclone ...  Read More

Chemical Engineering
155. Artificial Intelligence for Inferential Control of Crude Oil Stripping Process

Mehdi Ebnali; Mehdi Shahbazian; Houshang Jazayerirad

Volume 7, Issue 1 , Winter 2018, , Pages 70-92

http://dx.doi.org/10.22050/ijogst.2017.54928.1337

Abstract
  Stripper columns are used for sweetening crude oil, and they must hold product hydrogen sulfide content as near the set points as possible in the faces of upsets. Since product    quality cannot be measured easily and economically online, the control of product quality is often achieved ...  Read More

Petroleum Engineering – Reservoir
156. 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

Chemical Engineering
157. The Selection of Amine Solvent in Gas Treating Process Considering Physical and Process Criteria Using Multiple Criteria Decision-making Techniques: A Case Study of Ilam Gas Treating Company

Masoud Seidi; Mohsen Khezeli; Behrouz Bayati; Esmaeil Najafi

Volume 8, Issue 3 , Summer 2019, , Pages 73-88

http://dx.doi.org/10.22050/ijogst.2017.93209.1396

Abstract
  In the current work, a framework is presented for amine solvent selection in gas treating process. Since the appropriate decision making in this field affects the capital and operational costs, multi attribute decision making (MADM) techniques were used to rank alternatives. The determination of criteria ...  Read More

Chemical Engineering
158. Boosting the Octane Number of Gasoline by Natural Gas Concentrated in Methane

Iqbal Iqbal Hossain; Manos Roy; Abir Debnath

Volume 10, Issue 1 , Winter 2021, , Pages 80-88

http://dx.doi.org/10.22050/ijogst.2020.211087.1530

Abstract
  Gasoline obtained from the fractionation of indigenous natural gas condensate has low octane number (78) and is therefore of limited uses. Lead-based octane boosting and catalytic reforming are not the viable methods for many fractionation plants. This study was therefore aimed to develop an inexpensive ...  Read More

Petroleum Engineering
159. Experimental and Theoretical Investigation of Gelation Time of Nanostructured Polymer Gels by Central Composite Approach

Mohsen Seidmohammadi; Eghbal Sahraei; Behrouz Bayati

Volume 9, Issue 2 , Spring 2020, , Pages 81-92

http://dx.doi.org/10.22050/ijogst.2020.208529.1525

Abstract
  Currently available polymers as a component of in-situ gels are unsuitable for treating high-temperature/high-salinity reservoirs due to their chemical and thermal degradation. In this study, a new copolymer-based gel system including high molecular weight nanostructured polymers (NSPs) was developed ...  Read More

160. Effect of Molar Ratio and Resin Modification on the Protection Properties of Zinc-rich Alkali Silicate Primer

Iman Mirzaie Goodarzi; Mansour Farzam; Mohammad Reza Shishesaz; Davood Zaarei

Volume 3, Issue 1 , Winter 2014, , Pages 41-53

http://dx.doi.org/10.22050/ijogst.2014.5801

Abstract
  The influence of increasing the SiO2/K2O molar ratio on the electrochemical action of a waterborne potassium silicate zinc-rich coating was investigated by means of electrochemical impedance spectroscopy (EIS) and corrosion potential (Ecorr) measurements. The EIS results showed that increasing the SiO2/K2O ...  Read More

Petroleum Engineering
161. An Investigation of Optimum Miscible Gas Flooding Scenario: A Case Study of an Iranian Carbonates Formation

Mohsen Montazeri; Saeid Sadeghnejad

Volume 6, Issue 3 , Summer 2017, , Pages 41-54

http://dx.doi.org/10.22050/ijogst.2017.68920.1370

Abstract
  Gas injection into carbonate formations is one of the most important activities to protect oil reserves that can guarantee a steady production. On-time injection of enough gas can result in the recovery of billions barrels of oil. In addition, it can preserve a huge amount of gas for the next generations. ...  Read More

162. A Novel Combinatorial Approach to Discrete Fracture Network Modeling in Heterogeneous Media

Saeed Balouchi; Siyamak Moradi; Mohsen Masihi; Ali Erfaninia

Volume 2, Issue 1 , Winter 2013, , Pages 42-56

http://dx.doi.org/10.22050/ijogst.2013.3037

Abstract
  Fractured reservoirs contain about 85 and 90 percent of oil and gas resources respectively in Iran. A comprehensive study and investigation of fractures as the main factor affecting fluid flow or perhaps barrier seems necessary for reservoir development studies. High degrees of heterogeneity and sparseness ...  Read More

163. The Prediction of Surface Tension of Ternary Mixtures at Different Temperatures Using Artificial Neural Networks

Ali Khazaei; Hossein Parhizgar; Mohammad Reza Dehghani

Volume 3, Issue 3 , Summer 2014, , Pages 47-61

http://dx.doi.org/10.22050/ijogst.2014.6621

Abstract
  In this work, artificial neural network (ANN) has been employed to propose a practical model for predicting the surface tension of multi-component mixtures. In order to develop a reliable model based on the ANN, a comprehensive experimental data set including 15 ternary liquid mixtures at different temperatures ...  Read More

164. An Experimental Study of Alkali-surfactant-polymer Flooding through Glass Micromodels Including Dead-end Pores

Mohsen Esmaeili; Ali Heydarian; Abbas Helalizadeh

Volume 2, Issue 3 , Summer 2013, , Pages 48-56

http://dx.doi.org/10.22050/ijogst.2013.3644

Abstract
  Chemical flooding, especially alkaline/surfactant/polymer flooding, is of increasing interest due to the world increasing oil demand. This work shows the aspects of using alkaline/surfactant/polymer as an enhanced oil recovery method in the porous media having a high dead-end pore frequency with various ...  Read More

165. CFD Simulation of Dimethyl Ether Synthesis from Methanol in an Adiabatic Fixed-bed Reactor

Mohammad Golshadi; Reza Mosayebi Behbahani; Mohammad Reza Irani

Volume 2, Issue 2 , Spring 2013, , Pages 50-64

http://dx.doi.org/10.22050/ijogst.2013.3537

Abstract
  A computational fluid dynamic (CFD) study of methanol (MeOH) to dimethyl ether (DME) process in an adiabatic fixed-bed reactor is presented. One of the methods of industrial DME production is the catalytic dehydration of MeOH. Kinetic model was derived based on Bercic rate. The parameters of this equation ...  Read More

166. Comparison of Simulated Annealing, Genetic, and Tabu Search Algorithms for Fracture Network Modeling

Saeed Mahmoodpour; Mohsen Masihi; Sajjad Gholinejhad

Volume 4, Issue 2 , Spring 2015, , Pages 50-67

http://dx.doi.org/10.22050/ijogst.2015.9592

Abstract
  The mathematical modeling of fracture networks is critical for the exploration and development of natural resources. Fractures can help the production of petroleum, water, and geothermal energy. They also greatly influence the drainage and production of methane gas from coal beds. Orientation and spatial ...  Read More

167. Prediction of Kinematic Viscosity of Petroleum Fractions Using Artificial Neural Networks

Bizhan Khosronezhad Gheshlaghi; Mohammad Reza Dehghani; Hossein Parhizgar

Volume 3, Issue 2 , Spring 2014, , Pages 51-65

http://dx.doi.org/10.22050/ijogst.2014.6036

Abstract
  In this work, artificial neural network (ANN) was utilized to develop a new model for the prediction of the kinematic viscosity of petroleum fractions. This model was generated as a function of temperature (T), normal boiling point temperature (Tb), and specific gravity (S). In order to develop the new ...  Read More

168. Design and Practical Implementation of a New Markov Model Predictive Controller for Variable Communication Packet Loss in Network Control Systems

Karim Salahshoor; Babak Roshanipour; Iman Karimi

Volume 5, Issue 1 , Winter 2016, , Pages 53-64

http://dx.doi.org/10.22050/ijogst.2016.13829

Abstract
  The current paper investigates the influence of packet losses in network control systems (NCS’s) using the model predictive control (MPC) strategy. The study focuses on two main network packet losses due to sensor to controller and controller to actuator along the communication paths. A new Markov-based ...  Read More

169. Modeling and Simulation of Kuhni Extraction Column Using a Rate-based Model

Amir Hosein Tahershamsi; Ahad Ghaemi; Mansour Shirvani

Volume 5, Issue 4 , Autumn 2016, , Pages 53-67

http://dx.doi.org/10.22050/ijogst.2016.41600

Abstract
  In this study, liquid-liquid extraction process in a Kuhni extraction column was modeled and simulated. A non-equilibrium dynamic model was developed for modeling liquid-liquid extraction processes based on a rate-based model. The model equations are inclusive of partial and ordinary differential equations ...  Read More

170. An Experimental Study of Adsorption Breakthrough Curves for CO2/CH4 Separation in a Fixed Bed of Nanoporous Shaped Copper Trimesate Metal Organic Framework

Tahereh Asadi; Mohammadreza Ehsani

Volume 2, Issue 4 , Autumn 2013, , Pages 54-66

http://dx.doi.org/10.22050/ijogst.2013.4796

Abstract
  Copper trimesate (Cu-BTC) MOF has been pointed out as a promising adsorbent for separating carbon dioxide from methane. However, MOF’s need to be shaped prior to their use in packed bed adsorbers in order to reduce pressure drop; on the other hand, the production of mechanically resistant shaped ...  Read More

171. An Improvement in Thermal and Rheological Properties of Water-based Drilling Fluids Using Multiwall Carbon Nanotube (MWCNT)

Mostafa Sedaghatzadeh; Abbasali Khodadadi; Mohammad reza Tahmasebi birgani

Volume 1, Issue 1 , Autumn 2012, , Pages 55-65

http://dx.doi.org/10.22050/ijogst.2012.2775

Abstract
  Designing drilling fluids for drilling in deep gas reservoirs and geothermal wells is a major challenge. Cooling drilling fluids and preparing stable mud with high thermal conductivity are of great concern. Drilling nanofluids, i.e. a low fraction of carbon nanotube (CNT) well dispersed in mud, may enhance ...  Read More

172. Single-phase Near-well Permeability Upscaling and Productivity Index Calculation Methods

Seyed Shamsollah Noorbakhsh; Mohammad Reza Rasaei; Ali Heydarian; Hamed Behnaman

Volume 3, Issue 4 , Autumn 2014, , Pages 55-66

http://dx.doi.org/10.22050/ijogst.2014.7522

Abstract
  Reservoir models with many grid blocks suffer from long run time; it is hence important to deliberate a method to remedy this drawback. Usual upscaling methods are proved to fail to reproduce fine grid model behaviors in coarse grid models in well proximity. This is attributed to rapid pressure changes ...  Read More

173. A Decision Support System (DSS) to Select the Premier Fuel to Develop in the Value Chain of Natural Gas

Ahmad Mousaei; Mohammad Ali Hatefi

Volume 4, Issue 3 , Summer 2015, , Pages 60-76

http://dx.doi.org/10.22050/ijogst.2015.10376

Abstract
  A value chain is a series of events that takes a raw material and with each step adds value to it. Global interest in the application of natural gas (NG) in production and transportation has grown dramatically, representing a long-term, low-cost, domestic, and secure alternative to petroleum-based fuels. ...  Read More

Management
174. Strategy, Management Accounting Systems, and Performance of Iranian Petrochemical Companies in the Light of Contingency Theory

Abbas Alimoradi; Sepideh Borzoupour

Volume 6, Issue 2 , Spring 2017, , Pages 61-74

http://dx.doi.org/10.22050/ijogst.2017.47426

Abstract
  In the present business atmosphere, an organization should be able to respond to environmental needs occasioned by rapid and dynamic evolution as quickly as possible. It is obvious that such ability is impossible without a proper strategic approach, strategic thinking, and a suitable management accounting ...  Read More

175. Assessing the Asphaltene Adsorption on Metal Oxide Nanoparticles

Fatemeh Amin; Ali Reza Solaimany Nazar

Volume 5, Issue 3 , Summer 2016, , Pages 62-72

http://dx.doi.org/10.22050/ijogst.2015.38531

Abstract
  The Taguchi design of experiments (DOE) approach is adopted here to evaluate the impact ofeffective factors such as nanoparticles type, nanoparticles to model solution mass ratio, asphaltenestructure, and temperature on asphaltene adsorption equilibrium. Herein, the toluene-asphaltenesolution model is ...  Read More