201. An In-depth Study of Calcium Carbonate Scale Formation and Inhibition

Azizollah Khormali; Dmitry Gennadievich Petrakov; Georgy Yuryevich Shcherbakov

Volume 3, Issue 4 , Autumn 2014, , Pages 67-77

http://dx.doi.org/10.22050/ijogst.2014.7523

Abstract
  A fundamental study of scale formation of calcium carbonate (CaCO3) for producing oil wells has been carried out. This article presents the study of the prediction of salt deposition in two different synthetic formation waters and investigates the effects of temperature and pressure on calcium carbonate ...  Read More

202. Organizational Silence, from Roots to Solutions: A Case Study in Iran Petroleum Industry

Mehdi Afkhami Ardakani; Ehsan Mehrabanfar

Volume 4, Issue 2 , Spring 2015, , Pages 68-83

http://dx.doi.org/10.22050/ijogst.2015.9593

Abstract
  Organizational silence is defined as the lack of effective interactions among staff and it stands opposite to the concept of organizational voice. In the present research, the purpose is to measure the silence behavior among the Research Institute of Petroleum Industry (RIPI) staff before and after the ...  Read More

203. Anti-corrosive Properties of CeO2 Conversion Coatings on Aluminum Alloy 2024 Prepared by Dip Immersion Method

Niloufar Bahramipanah; Iman Danaee; Maryam Kanani; Mohammad Hosein Maddahy

Volume 5, Issue 4 , Autumn 2016, , Pages 68-76

http://dx.doi.org/10.22050/ijogst.2016.41601

Abstract
  As an alternative to chromate conversion coatings, rare-earth coatings especially cerium, because of the low toxicity, have attracted considerable attention. Using dip immersion method, cerium-based conversion coating was deposited on aluminum 2024. Corrosion resistance was studied in 3.5 wt.% NaCl solution ...  Read More

204. The Effect of Simultaneous Incorporation of PTFE Nanoparticles and Carbon Nanotubes on the Tribological Behavior of Ni-P Coating

Hamid Rahmati; Farzad Mahboobi

Volume 5, Issue 3 , Summer 2016, , Pages 73-81

http://dx.doi.org/10.22050/ijogst.2016.38532

Abstract
  In some engineering fields, wear resistance and a low friction coefficient are required at the sametime. In this research, PTFE nanoparticles and carbon nanotubes were co-deposited within Ni-Pmatrix to obtain an Ni-P-PTFE-CNT hybrid coating for wear resistance and a low friction coefficient.The tribological ...  Read More

Petroleum Engineering – Drilling
205. Application of an Adaptive Neuro-fuzzy Inference System and Mathematical Rate of Penetration Models to Predicting Drilling Rate

Hossein Yavari; Mohammad Sabah; Rassoul Khosravanian; David. A Wood

Volume 7, Issue 3 , Summer 2018, , Pages 73-100

http://dx.doi.org/10.22050/ijogst.2018.83374.1391

Abstract
  The rate of penetration (ROP) is one of the vital parameters which directly affects the drilling time and costs. There are various parameters that influence the drilling rate; they include weight on bit, rotational speed, mud weight, bit type, formation type, and bit hydraulic. Several approaches, including ...  Read More

Petroleum Engineering
206. A Pore Scale Evaluation of Produced Biosurfactants for Ex-situ Enhanced Oil Recovery

Mohammad Hossein Shabani; Arezou Jafari; Seyed Mohammad Mousavi

Volume 6, Issue 2 , Spring 2017, , Pages 75-89

http://dx.doi.org/10.22050/ijogst.2017.47443

Abstract
  Microbial enhanced oil recovery (MEOR) is an economical method used to improve the oil recovery from reservoirs. In the MEOR techniques, by applying different microorganisms, a variety of products such as bioacid, biogas, biosurfactant, and biopolymer are generated, among which biosurfactant, one of ...  Read More

207. Application of Electro-Fenton (EF) Process to the Removal of Pentachlorophenol from Aqueous Solutions

Zahra Heidari; Mohsen Motevasel; Nemat Allah Jaafarzadeh

Volume 4, Issue 4 , Autumn 2015, , Pages 76-87

http://dx.doi.org/10.22050/ijogst.2016.12481

Abstract
  Pentachlorophenol (PCP) is a very hazardous compound which enters into the environment by industries such as refineries and petrochemicals. As its biological degradation is very slow, this use may cause the pollution of soils and groundwater; with the recent emergence of pentachlorophenol contamination ...  Read More

208. A CFD Simulation of the Parameters Affecting the Performance of Downhole De-oiling Hydrocyclone

Seyyed Mohsen Hosseini; Khalil Shahbazi; Mohammad Reza Khosravi Nikou

Volume 4, Issue 3 , Summer 2015, , Pages 77-93

http://dx.doi.org/10.22050/ijogst.2014.10377

Abstract
  Among the all parameters affecting the performance of a downhole de-oiling hydrocyclone, the investigation of internal flow field deserves more attempts especially in the petroleum industry. In this study, the effects of inlet flow rate, inlet oil volume fraction, and oil droplet diameter on the separation ...  Read More

209. A Self-Reconstructing Algorithm for Single and Multiple-Sensor Fault Isolation Based on Auto-Associative Neural Networks

Hamidreza Mousavi; Mehdi Shahbazian; Nosrat Moradi

Volume 6, Issue 1 , Winter 2017, , Pages 77-92

http://dx.doi.org/10.22050/ijogst.2017.44384

Abstract
  Recently different approaches have been developed in the field of sensor fault diagnostics based on Auto-Associative Neural Network (AANN). In this paper we present a novel algorithm called Self reconstructing Auto-Associative Neural Network (S-AANN) which is able to detect and isolate single faulty ...  Read More

210. An Electrochemical Investigation of Nano Cerium Oxide/Graphene as an Electrode Material for Supercapacitors

Mohammadreza Shishesaz; Mehdi Robat Sarpoushi; Mohammad Ali Golozar

Volume 4, Issue 1 , Winter 2015, , Pages 81-91

http://dx.doi.org/10.22050/ijogst.2015.8617

Abstract
  In this paper, the effect of cationic and anionic ion sizes on the charge storage capability of graphene nanosheets is investigated. The electrochemical properties of the produced electrode are studied using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) techniques in 3M NaCl, ...  Read More

Petroleum Engineering
211. Selection of an Optimal Hybrid Water/Gas Injection Scenario for Maximization of Oil Recovery Using Genetic Algorithm

Shahin Kord; Omid Ourahmadi; Arman Namaee-Ghasemi

Volume 9, Issue 1 , Winter 2020, , Pages 94-111

http://dx.doi.org/10.22050/ijogst.2018.108293.1423

Abstract
  Production strategy from a hydrocarbon reservoir plays an important role in optimal field development in the sense of maximizing oil recovery and economic profits. To this end, self-adapting optimization algorithms are necessary due to the great number of variables and the excessive time required for ...  Read More

212. Preparation and Characterization of Structure and Corrosion Resistivity of Polyurethane /Montmorillonite/Cerium Nitrate Nanocomposites

Iman Moghri; Mansoor Farzam; Mohammadreza Shishesaz; Davood Zaarei

Volume 5, Issue 2 , Spring 2016, , Pages 100-110

http://dx.doi.org/10.22050/ijogst.2016.15801

Abstract
  In this study, nanocomposite coatings based on polyurethane cerium nitrate montmorillonite (MMT) were prepared, applied on carbon steel substrates, and investigated. The nanocomposite coatings were successfully prepared by the effective dispersing of nanoparticles in polyurethane resin by mechanical ...  Read More

Petroleum Engineering
213. Thermodynamic and Kinetic Investigations of Corrosion Inhibition Behavior of 2-MBT on Steel at a pH of 8

Hojatallah Koraee; Hadi Eskandari; Iman Danaee

Volume 8, Issue 3 , Summer 2019, , Pages 101-112

http://dx.doi.org/10.22050/ijogst.2018.55732

Abstract
  Corrosion results in hazardous and expensive damage to pipelines, vehicles, water and wastewater systems, and even home appliances. One of the most extensively practical methods for protecting metals and alloys against corrosion is to use organic inhibitors. The inhibition capability of 2-Mercaptobenzothiazole ...  Read More

Energy Systems Engineering
214. Influence of Pipeline Operating Pressure on Value Setting of Automatic Control Valves at Different Pressure Drop Rates

Mehdi Mahmoodi; Mofid Gorji Bandpy

Volume 8, Issue 4 , Autumn 2019, , Pages 106-121

http://dx.doi.org/10.22050/ijogst.2018.105249.1420

Abstract
  When a natural gas pipeline ruptures, the adjacent upstream and downstream automatic control valves (ACV) should close quickly to prevent leakage or explosion. The differential pressure set point (DPS) at each valve location is the main criteria for value setting in ACV actions. If the DPS is not properly ...  Read More

Chemical Engineering – Gas Processing and Transmission
215. The Synthesis and Implementation of Pebax/PEG 400/NH2-MIL125 Nanocomposite Membranes to Separate CO2/CH4

Cyrus Fallahi; Sadegh Moradi; Reza Masayebi Behbahani

Volume 8, Issue 2 , Spring 2019, , Pages 107-127

http://dx.doi.org/10.22050/ijogst.2019.171324.1494

Abstract
  In the present study, the permeabilities of CO2 and CH4 in terms of ideal and actual CO2/CH4 selectivity were investigated through the synthesized membranes of poly (ether-block-amide) (Pebax 1657) accompanied with poly (ethylene glycol) (PEG 400) and NH2-MIL125 nanoparticles. NH2-MIL125 nanofillers ...  Read More

Petroleum Engineering – Reservoir
216. Determination of Minimum Miscibility Pressure (MMP) using PVTi Software, Eclipse 300 and Empirical Correlations

Vahid Karamnia; Siavash Ashoori

Volume 10, Issue 1 , Winter 2021, , Pages 107-126

Abstract
  < p>One of the most important factors through the miscible gas injection process is to determine the Minimum Miscibility Pressure. According to the definition, the minimum miscibility pressure is the minimum pressure at which, at a constant temperature, the oil and gas injected can dissolve together ...  Read More

Technical Inspection Engineering
217. Effect of Graphene Oxide Decorated With Synthesized Nano-CeO2 on Barrier Properties of Epoxy Anticorrosion Coatings

Zeinab Nassaj; Fatemeh Ravari; Iman Danaee

Volume 9, Issue 2 , Spring 2020, , Pages 119-135

http://dx.doi.org/10.22050/ijogst.2019.188155.1509

Abstract
  In this paper, graphene oxide decorated with cerium oxide (CeO2) nanoparticles was prepared and used as anticorrosive pigments in epoxy nanocomposite coatings. The synthesized nanoparticle was characterized by FTIR, XRD, SEM, and EDX analyses. Graphene oxide decorated with CeO2 nanoparticles was dispersed ...  Read More