Petroleum Engineering
126. Application of Decline Curve Analysis for Estimating Different Properties of Closed Fractured Reservoirs for Vertical Wells

Amin Daryasafar; Mohammad FathiNasab; Giovanni Da Prat; Riyaz Kharrat

Volume 9, Issue 2 , Spring 2020, , Pages 61-80

http://dx.doi.org/10.22050/ijogst.2017.30498.1275

Abstract
  In this paper, decline curve analysis is used for estimating different parameters of bounded naturally fractured reservoirs. This analysis technique is based on rate transient technique, and it is shown that if production rate is plotted against time on a semi-log graph, straight lines are obtained that ...  Read More

Petroleum Engineering – Production
127. Strategic Technologies Selection for Oil Production: An Application of Attractiveness-Capability Matrix of Technology

Sara Mohammadzadeh; Nima Mokhtarzadeh; Mohammad Reza Rasaei

Volume 10, Issue 1 , Winter 2021, , Pages 66-79

http://dx.doi.org/10.22050/ijogst.2020.231146.1551

Abstract
  Rapid development of technologies, their increasing complexity and variety, together with limited organizational resources and efforts for survival in industrial competitions have made the task of appropriate technology selection a major challenge. The present research is aimed at the formulation of ...  Read More

Chemical Engineering
128. A Molecular Simulation of Natural Gas Dehydration by 3A Zeolite Nanostructure

behrouz Bayati; Mahmoud Rahmati

Volume 6, Issue 3 , Summer 2017, , Pages 68-78

http://dx.doi.org/10.22050/ijogst.2018.57856

Abstract
  The adsorption and separation properties of 3A zeolite are investigated by using Grand Canonical Monte Carlo (GCMC) simulation. To obtain the adsorption isotherms of water, methyl mercaptan, and methane on 3A zeolite, COMPASS Force Filed is used. The adsorption isotherms of the pure components and the ...  Read More

129. A New Method of Earlier Kick Assessment Using ANFIS

Fatemeh Deregeh; Milad Karimian; Hossein Nezmabadi-Pour

Volume 2, Issue 1 , Winter 2013, , Pages 33-41

http://dx.doi.org/10.22050/ijogst.2013.3036

Abstract
  The late detection of the kick (the entrance of underground fluids into oil wells) leads to oil well blowouts. It causes human life loss and imposes a great deal of expenses on the petroleum industry. This paper presents the application of adaptive neuro-fuzzy inference system designed for an earlier ...  Read More

130. Gas-liquid Relative Permeability Estimation in 2D Porous Media by Lattice Boltzmann Method: Low Viscosity Ratio 2D LBM Relative Permeability

Sadegh Mahmoudi; Abdonabi Hashemi; Shahin Kord

Volume 2, Issue 2 , Spring 2013, , Pages 34-49

http://dx.doi.org/10.22050/ijogst.2013.3536

Abstract
  This work is a primary achievement in studying the CO2 and N2–oil systems. To predict gas-liquid relative permeability curves, a Shan-Chen type multicomponent multiphase lattice Boltzmann model for two-phase flow through 2D porous media is developed. Periodic and bounce back boundary conditions ...  Read More

131. The Generalized Maxwell-Stefan Model Coupled with Vacancy Solution Theory of Adsorption for Diffusion in Zeolites

Seyyed Milad Salehi; Mahmood Reza Rahimi

Volume 3, Issue 1 , Winter 2014, , Pages 34-40

http://dx.doi.org/10.22050/ijogst.2014.5800

Abstract
  It seems using the Maxwell-Stefan (M-S) diffusion model in combination with the vacancy solution theory (VST) and the single-component adsorption data provides a superior, qualitative, and quantitative prediction of diffusion in zeolites. In the M-S formulation, thermodynamic factor (Г) is an essential ...  Read More

132. A Numerical Study of the Sour Gas Reforming in a Dielectric Barrier Discharge Reactor

Sajedeh Shahsavari; Alireza Ganjovi; Alireza Ahmadi; Fahimeh Shojaei

Volume 5, Issue 4 , Autumn 2016, , Pages 36-52

http://dx.doi.org/10.22050/ijogst.2016.41575

Abstract
  In this paper, using a one-dimensional simulation model, the reforming process of sour gas, i.e. CH4, CO2, and H2S, to the various charged particles and syngas in a dielectric barrier discharge (DBD) reactor is studied. An electric field is applied across the reactor radius, and thus a non-thermal plasma ...  Read More

133. An Experimental Study of CO2-low Salinity Water Alternating Gas Injection in Sandstone Heavy Oil Reservoirs

Hadi Zolfaghari; Alireza Zebarjadi; Omid Shahrokhi; Mohammad Hosein Ghazanfari

Volume 2, Issue 3 , Summer 2013, , Pages 37-47

http://dx.doi.org/10.22050/ijogst.2013.3643

Abstract
  Several studies have shown that oil recovery significantly increased by low salinity water flooding (LSWF) in sandstones. However, mechanism of oil recovery improvement is still controversial. CO2 that develops buffer in presence of water is expected as a deterrent factor in LSWF efficiency based on ...  Read More

134. An Experimental Examination of Adsorption Phenomenon in Foamassisted Water Alternative Gas: The Effect of Injection Rate

Mohammad Amin Safarzadeh; Seyyed Alireza Tabatabaei Nezhad; Eghbal Sahraei; Mehdi Mohammad Salehi

Volume 3, Issue 2 , Spring 2014, , Pages 37-50

http://dx.doi.org/10.22050/ijogst.2014.6035

Abstract
  The main factor affecting the economics of foam-assisted water alternative gas (FAWAG) process is the loss of foaming agent by adsorption onto reservoir rocks. In this study, the effects of phases, surfactant concentration, salinity, adsorbents, and sacrificial agent on adsorption density were investigated ...  Read More

135. 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

136. Development of New Potassium Carbonate Sorbent for CO2 Capture under Real Flue Gas Conditions

Javad Esmaili; Mohammad Reza Ehsani

Volume 3, Issue 3 , Summer 2014, , Pages 39-46

http://dx.doi.org/10.22050/ijogst.2014.6620

Abstract
  In this paper, the development of a new potassium carbonateon alumina support sorbent prepared by impregnating K2CO3 with an industrial grade of Al2O3 support was investigated. The CO2 capture capacity was measured using real flue gas with 8% CO2 and 12% H2O in a fixed-bed reactor at a temperature of ...  Read More

138. Investigating the Effect of Heterogeneity on Buckley-Leverett Flow Model

Maryam Ghorbani; Mohammad Reza Khorsand; Mohsen Masihi

Volume 3, Issue 4 , Autumn 2014, , Pages 41-54

http://dx.doi.org/10.22050/ijogst.2014.7486

Abstract
  The performance of water flooding can be investigated by using either detail numerical modeling or simulation, or simply through the analytical Buckley-Leverett (BL) model. The Buckley-Leverett analytical technique can be applied to one-dimensional homogeneous systems. In this paper, the impact of heterogeneity ...  Read More

139. Modeling and Simulation of Claus Unit Reaction Furnace

Maryam Pahlavan; Mohammad Ali Fanaei

Volume 5, Issue 1 , Winter 2016, , Pages 42-52

http://dx.doi.org/10.22050/ijogst.2016.13828

Abstract
  Reaction furnace is the most important part of the Claus sulfur recovery unit and its performance has a significant impact on the process efficiency. Too many reactions happen in the furnace and their kinetics and mechanisms are not completely understood; therefore, modeling reaction furnace is difficult ...  Read More

140. Prediction of Nitrogen Injection Performance in Conventional Reservoirs Using the Correlation Developed by the Incorporation of Experimental Design Techniques and Reservoir Simulation

Ahad Fereidooni; Masoud Fereidooni; Siyamak Moradi; Ghasem Zargar

Volume 1, Issue 1 , Autumn 2012, , Pages 43-54

http://dx.doi.org/10.22050/ijogst.2012.2774

Abstract
  Enhanced oil recovery using nitrogen injection is a commonly applied method for pressure maintenance in conventional reservoirs. Numerical simulations can be practiced for the prediction of a reservoir performance in the course of injection process; however, a detailed simulation might take up enormous ...  Read More

141. Exergoeconomic Evaluation of LNG and NGL Co-production Process Based on the MFC Refrigeration Systems

Hojat Ansarinasab; Mahmoud Afshar; Mehdi Mehrpooya

Volume 5, Issue 3 , Summer 2016, , Pages 45-61

http://dx.doi.org/10.22050/ijogst.2016.38530

Abstract
  In this paper, exergy and exergoeconomic analysis is performed on the recently proposed process forthe coproduction of liquefied natural gas (LNG) and natural gas liquids (NGL) based on the mixedfluid cascade (MFC) refrigeration systems, as one of the most important and popular natural gasliquefaction ...  Read More

142. An Improvement in Cation Exchange Capacity Estimation and Water Saturation Calculation in Shaly Layers for One of Iranian Oil Fields

Masoumeh Bashiri; Mosayyeb Kamari; Ghassem Zargar

Volume 6, Issue 1 , Winter 2017, , Pages 45-62

http://dx.doi.org/10.22050/ijogst.2017.44376

Abstract
  Water saturation and cation exchange capacity are the most significant parameters used to calculate a hydrocarbon zone potential. In clean formations, by applying the famous Archie model, which assumes that in the formation the only electric conductor is the formation water, the water saturation can ...  Read More

Chemical Engineering
143. An Evaluation of Four Electrolyte Models for the Prediction of Thermodynamic Properties of Aqueous Electrolyte Solutions

Kamalodin Momeni; Hesam Najibi Najibi; Mohammad T. Sadeghi

Volume 6, Issue 2 , Spring 2017, , Pages 46-60

http://dx.doi.org/10.22050/ijogst.2017.47434

Abstract
  In this work, the performance of four electrolyte models for prediction the osmotic and activity coefficients of different aqueous salt solutions at 298 K, atmospheric pressure and in a wide range of concentrations are evaluated. In two of these models, (electrolyte Non-Random Two-Liquid e-NRTL and Mean ...  Read More

144. Preventing Instability Phenomenon in Gas-lift Optimization

Mohammad Reza Mahdiani; Ehsan Khamehchi

Volume 4, Issue 1 , Winter 2015, , Pages 49-65

http://dx.doi.org/10.22050/ijogst.2015.8615

Abstract
  One of the problems that sometimes occur in gas allocation optimization is instability phenomenon. This phenomenon reduces the oil production and damages downhole and surface facilities. Different works have studied the stability and suggested some solutions to override it, but most of them (such as ...  Read More

145. Wettability Alteration of Sandstone and Carbonate Rocks by Using ZnO Nanoparticles in Heavy Oil Reservoirs

Masoumeh Tajmiri; Seyed Mousa Mousavi; Mohammad Reza Ehsani; Emad Roayaei; Ali Emadi

Volume 4, Issue 4 , Autumn 2015, , Pages 50-66

http://dx.doi.org/10.22050/ijogst.2016.12479

Abstract
  Efforts to enhance oil recovery through wettability alteration by nanoparticles have been attracted in recent years. However, many basic questions have been ambiguous up until now. Nanoparticles penetrate into pore volume of porous media, stick on the core surface, and by creating homogeneous water-wet ...  Read More

146. Solubility of Methane, Ethane, and Propane in Pure Water Using New Binary Interaction Parameters

Masoud Behrouz; Masoud Aghajani

Volume 4, Issue 3 , Summer 2015, , Pages 51-59

http://dx.doi.org/10.22050/ijogst.2015.10375

Abstract
  Solubility of hydrocarbons in water is important due to ecological concerns and new restrictions on the existence of organic pollutants in water streams. Also, the creation of a thermodynamic model has required an advanced study of the phase equilibrium between water (as a basis for the widest spread ...  Read More

Chemical Engineering
147. Prediction of the Products Yield of Delayed Coking for Iranian Vacuum Residues

Farshad Torabi Esfahani; Javad Ivakpour; Mohammadreza Ehsani

Volume 7, Issue 3 , Summer 2018, , Pages 53-64

http://dx.doi.org/10.22050/ijogst.2017.102019.1415

Abstract
  In this work, new correlations are proposed to predict the products yield of delayed coking as a function of CCR and temperature based on the experimental results. For this purpose, selected Iranian vacuum residues with Conradson carbon residue (CCR) values between 13.40-22.19 wt.% were heated at a 10 ...  Read More

Mechanical Engineering – Applied Design
148. Numerical Investigation of the Impact of Inlet Channel Numbers on the Flow Pattern, Performance, and Erosion of Gas-particle Cyclone

Seyed Masoud Vahedi; Farzad Parvaz; Mohammad Kamali; Hasti Jafari Jebeli

Volume 7, Issue 4 , Autumn 2018, , Pages 59-78

http://dx.doi.org/10.22050/ijogst.2018.98556.1409

Abstract
  The effect of adding extra inlet channels on the operation of the Stairmand Cyclone has been investigated numerically. The Reynolds stress model (RSM) and Eulerian-Lagrangian method were used to investigate the complex turbulent flow and cyclone performance. The impacts of one-way coupling and two-way ...  Read More

Chemical Engineering
149. Viscosity Reduction of Heavy Crude Oil by Dilution Methods: New Correlations for the Prediction of the Kinematic Viscosity of Blends

Saeed Mohammadi; Mohammad Amin Sobati; Mohammad Sadeghi

Volume 8, Issue 1 , Winter 2019, , Pages 60-77

http://dx.doi.org/10.22050/ijogst.2018.97887.1405

Abstract
  Dilution is one of the various existing methods in reducing heavy crude oil viscosity. In this method, heavy crude oil is mixed with a solvent or lighter oil in order to achieve a certain viscosity. Thus, precise mixing rules are needed to estimate the viscosity of blend. In this work, new empirical ...  Read More

Offshore Engineering
150. An Influence of Trench Formation on Steel Catenary Risers Based on a Hysteretic Nonlinear Seabed Model

Reza Siahtiri; Abdolrahim Taheri

Volume 6, Issue 4 , Autumn 2017, , Pages 64-79

http://dx.doi.org/10.22050/ijogst.2017.53912

Abstract
  A steel catenary riser (SCR) attached to a floating platform at its upper end encounters fluctuations in and near its touchdown zone (TDZ), which causes the interaction with the seabed. Subsea surveys and the analysis of SCR’s indicated that the greatest stress and highest damage occurred near ...  Read More