33. An Experimental Study on the Operational Factors Affecting the Oil Content of Wax during Dewaxing Process: Adopting a DOE Method

Mohammad Hosein Eghbali; Ali Reza Soleimani Nazar; Touraj Tavakoli

Volume 2, Issue 1 , Winter 2013, , Pages 1-8

http://dx.doi.org/10.22050/ijogst.2013.3033

Abstract
  The oil content of the wax produced in a dewaxing process is the key economic parameter that should be reduced as much as possible. Some factors such as the type of solvents, cooling rate, temperature, and solvent to oil ratio influence the dewaxing process. Due to the fact that crude oil differs from ...  Read More

34. Prevention of Biofouling in Hydrocarbons by Antimicrobial Vessel and Pipeline Coating for Cost Savings and an Increase in Safety and Reliability

Maximilian Lackner; Josef-Peter Guggenbichler

Volume 2, Issue 2 , Spring 2013, , Pages 1-7

http://dx.doi.org/10.22050/ijogst.2013.3532

Abstract
  Hydrocarbons are prone to bacterial and fungal contamination. Bacteria and fungi live and proliferate in water droplets within the fuels and on surfaces surrounding them. This can cause corrosion in oil exploration and production, clogging of fuel lines in aviation and higher emissions in diesel combustion ...  Read More

35. Support Vector Machine Based Facies Classification Using Seismic Attributes in an Oil Field of Iran

Majid Bagheri; Mohammad Ali Riahi

Volume 2, Issue 3 , Summer 2013, , Pages 1-10

http://dx.doi.org/10.22050/ijogst.2013.3640

Abstract
  Seismic facies analysis (SFA) aims to classify similar seismic traces based on amplitude, phase, frequency, and other seismic attributes. SFA has proven useful in interpreting seismic data, allowing significant information on subsurface geological structures to be extracted. While facies analysis has ...  Read More

36. Application of Natural Sorbents in Crude Oil Adsorption

Reza Behnood; Bagher Anvaripour; Nematollah Jaafarzade Haghighi Fard; Masoumeh Farasati

Volume 2, Issue 4 , Autumn 2013, , Pages 1-11

http://dx.doi.org/10.22050/ijogst.2013.4792

Abstract
  In last decades, oil spill pollution has become an important issue of concern due to its serious environmental impacts; therefore, necessary actions should be taken to prevent or reduce these types of pollution and their environmental consequences. Natural organic sorbents are emerging as proper choices ...  Read More

37. Comparing Geostatistical Seismic Inversion Based on Spectral Simulation with Deterministic Inversion: A Case Study

Hamid Reza Ansari; Reza Motafakkerfard; Mohammad Ali Riahi

Volume 3, Issue 1 , Winter 2014, , Pages 1-14

http://dx.doi.org/10.22050/ijogst.2014.5796

Abstract
  Seismic inversion is a method that extracts acoustic impedance data from the seismic traces. Source wavelets are band-limited, and thus seismic traces do not contain low and high frequency information. Therefore, there is a serious problem when the deterministic seismic inversion is applied to real data ...  Read More

38. A New Cementation Factor Correlation in Carbonate Parts of Oil Fields in South-West Iran

Saeed Rafiee; Abdolnabi Hashemi; Mohammad Shahi

Volume 3, Issue 2 , Spring 2014, , Pages 1-17

http://dx.doi.org/10.22050/ijogst.2014.6030

Abstract
  Petrophysical parameters such as porosity, water and oil saturations, formation resistivity factor, etc. describe the storage capability of the porous media or the capacity of rocks to hold fluids. The modified Archie’s equation    . / . , also called the saturation equation, is used ...  Read More

39. 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

40. Experimental Studies of CO2 Capturing from the Flue Gases

Ehsan Rahmandoost; Behrooz Roozbehani; Mohammad Hosein Maddahi

Volume 3, Issue 4 , Autumn 2014, , Pages 1-15

http://dx.doi.org/10.22050/ijogst.2014.7483

Abstract
  CO2 emissions from combustion flue gases have turned into a major factor in global warming. Post-combustion carbon capture (PCC) from industrial utility flue gases by reactive absorption can substantially reduce the emissions of the greenhouse gas CO2. To test a new solvent (AIT600) for this purpose, ...  Read More

41. Removal of Sulfur and Nitrogen Compounds from Diesel Fuel Using MSU-S

Sina Rashidi; Mohammad Reza Khosravi Nikou; Bagher Anvaripour; Touba Hamoule

Volume 4, Issue 1 , Winter 2015, , Pages 1-16

http://dx.doi.org/10.22050/ijogst.2015.8603

Abstract
  The performance of MSU-S and its forms modified with phosphotungstic acid (HPW) and nickel (Ni) for the desulfurization and denitrogenation of model diesel fuel were studied. According to the results of the characteristic tests (N2 adsorption-desorption, XRD, SEM, and NH3-TPD), heteropoly acid incorporation ...  Read More

42. Separating Well Log Data to Train Support Vector Machines for Lithology Prediction in a Heterogeneous Carbonate Reservoir

Mohammad Ali Sebtosheikh; Reza Motafakkerfard; Mohammad Ali Riahi; Siyamak Moradi

Volume 4, Issue 2 , Spring 2015, , Pages 1-14

http://dx.doi.org/10.22050/ijogst.2015.9588

Abstract
  The prediction of lithology is necessary in all areas of petroleum engineering. This means that to design a project in any branch of petroleum engineering, the lithology must be well known. Support vector machines (SVM’s) use an analytical approach to classification based on statistical learning ...  Read More

43. An Efficient Method for Determining Capillary Pressure and Relative Permeability Curves from Spontaneous Imbibition Data

Mojtaba Ghaedi; Zoltán E. Heinemann; Mohsen Masihi; Mohammad Hossein Ghazanfari

Volume 4, Issue 3 , Summer 2015, , Pages 1-17

http://dx.doi.org/10.22050/ijogst.2015.10364

Abstract
  In this paper, a very efficient method, called single matrix block analyzer (SMBA), has been developed to determine relative permeability and capillary pressure curves from spontaneous imbibition (SI) data. SMBA mimics realistically the SI tests by appropriate boundary conditions modeling. In the proposed ...  Read More

44. Synchrosqueezing-based Transform and its Application in Seismic Data Analysis

Saman Gholtashi; Mohammad Amir Nazari Siahsar; Amin RoshandelKahoo; Hosein Marvi; Alireza Ahmadifard

Volume 4, Issue 4 , Autumn 2015, , Pages 1-14

http://dx.doi.org/10.22050/ijogst.2016.12474

Abstract
  Seismic waves are non-stationary due to its propagation through the earth. Time-frequency transforms are suitable tools for analyzing non-stationary seismic signals. Spectral decomposition can reveal the non-stationary characteristics which cannot be easily observed in the time or frequency representation ...  Read More

45. Application of Modified LECA in Removing Nickel from Wastewater

Abdossamad Rastegar; Bagher Anvaripour; Nematollah Jaafarzadeh

Volume 5, Issue 1 , Winter 2016, , Pages 1-12

http://dx.doi.org/10.22050/ijogst.2016.13825

Abstract
  In the present study, lightweight expanded clay aggregate (LECA) coated with iron oxide was investigated as a low cost sorbent to remove  from wastewater. Iron oxide coated LECA (IOCL) as a new sorbent was tested for its efficiency as  sorbent using operational parameters such as contact time, ...  Read More

46. Application of Well Log Analysis to Assess the Petrophysical Parameters of the Early Eocene Sui Main Limestone (SML) in Kharnhak-1 Well, Middle Indus Basin, Pakistan

Asad Zia; Muhammad Awais; Muhammad Ishaq; Sardar Hamid; Naveed Akhtar; Lawangin Sheikh

Volume 5, Issue 2 , Spring 2016, , Pages 1-20

http://dx.doi.org/10.22050/ijogst.2016.15783

Abstract
  The petrophysical analysis of the early Eocene Sui Main Limestone (SML) has been conducted in Kharnhak-1 well for the prospect of the hydrocarbon exploration of the Khairpur-Jacobabad High, Middle Indus Basin, Pakistan. The petrophysical analysis of SML is carried out on the basis of well logs including ...  Read More

47. Characterization of Reservoir Heterogeneity by Capacitance-resistance Model in Water-flooding Projects

Seyed Ehsan Eshraghi; Mohammad Reza Rasaei; Peyman Pourafshary; Amir Salar Masoumi

Volume 5, Issue 3 , Summer 2016, , Pages 1-13

http://dx.doi.org/10.22050/ijogst.2016.38522

Abstract
  Tedious calculations and simulations are needed to obtain an efficient production scenario and/orproper field development strategy. Capacitance-resistance model (CRM) is proved to be a fastreservoir simulation tool using just the field-available data of production and injection rates. Thisapproach sets ...  Read More

48. An Experimental Study of Surfactant Alternating CO2 Injection for Enhanced Oil Recovery of Carbonated Reservoir

Asghar Gandomkar; Bijan Honarvar; Yousef Kazemzadeh; Zeinab Derikvand

Volume 5, Issue 4 , Autumn 2016, , Pages 1-17

http://dx.doi.org/10.22050/ijogst.2016.41564

Abstract
  Core flooding experiments were conducted with the objective of evaluating near miscible surfactant alternating CO2 injection and the effect of surfactant concentrations on gas-oil and water displacements in porous media. The core samples were provided from a low permeability mixed wet oil reservoir at ...  Read More

49. Influence of Surfactant Type, Surfactant Concentration, and Salinity on Interfacial Tension of a Brine/Live Oil/Surfactant Fluid System: A Case Study of Iranian Asmari Oil Reservoir

Mohammad Saki; Ali Reza Khaz'al

Volume 6, Issue 1 , Winter 2017, , Pages 1-16

http://dx.doi.org/10.22050/ijogst.2017.44341

Abstract
  The chemical surfactant flooding can mobilize the trapped oil by lowering the interfacial tension between oil and brine and in some cases altering the reservoir rock wettability. In this work, the effect of surfactants on oil/brine interfacial tension was experimentally investigated. First, the effect ...  Read More

Safety and Technical Protection Engineering
50. Analysis of Hyperspectral Imagery for Oil Spill Detection Using SAM Unmixing Algorithm Techniques

Ahmad Keshavarz; Seyed Mohammad Karim Hashemizadeh

Volume 6, Issue 2 , Spring 2017, , Pages 1-16

http://dx.doi.org/10.22050/ijogst.2017.47444

Abstract
  Oil spill is one of major marine environmental challenges. The main impacts of this phenomenon are preventing light transmission into the deep water and oxygen absorption, which can disturb the photosynthesis process of water plants. In this research, we utilize SpecTIR airborne sensor data to extract ...  Read More