Petroleum Engineering
51. Capability of the Stochastic Seismic Inversion in Detecting the Thin Beds: a Case Study at One of the Persian Gulf Oilfields

Mostafa Zare; Abbdolrahim Javaherian; Mehdi Shabani

Volume 7, Issue 3 , Summer 2018, , Pages 1-17

http://dx.doi.org/10.22050/ijogst.2018.120334.1439

Abstract
  The aim of seismic inversion is mapping all of the subsurface structures from seismic data. Due to the band-limited nature of the seismic data, it is difficult to find a unique solution for seismic inversion. Deterministic methods of seismic inversion are based on try and error techniques and provide ...  Read More

Petroleum Engineering
52. A Numerical Investigation into the Effect of Controllable Parameters on the Natural Gas Storage in a Weak Reservoir-type Aquifer

Arezou Jafari; Peyman Sadirli; Reza Gharibshahi; Esmaeel Kazemi Tooseh; Masoud Samivand; Ali Teymouri

Volume 8, Issue 1 , Winter 2019, , Pages 11-31

http://dx.doi.org/10.22050/ijogst.2018.119136.1441

Abstract
  Natural gas storage process in aquifer, due to fluid flow behavior of gas and water in the porous medium and because of their contact with each other under reservoir conditions, faces several challenges. Therefore, there should be a clear understanding of the injected gas behavior before and after the ...  Read More

Petroleum Engineering
53. An Impressive Impact on Well Productivity by Hydrochloric Acidizing of Vuggy Carbonate Reservoir: A Case Study

Abolfazl Hashemi; Seyed Reza Shadizadeh

Volume 6, Issue 3 , Summer 2017, , Pages 12-28

http://dx.doi.org/10.22050/ijogst.2017.53900.1335

Abstract
  Hydrochloric acidizing is a routine operation in oil fields to reduce the mechanical skin. In this paper, practical acidizing in a typical carbonate oil reservoir located in the southwest of Iran is practiced, which shows an unexpected improvement after acidizing. To understand the acidizing effect on ...  Read More

54. A Feasibility Study of the Technologies for Deep Ethane Recovery from the Gases Produced in One of the Iran Southern Fields

Seyed Hesam Najibi; Hamid Darabi; Mohammad Javad Kamali

Volume 1, Issue 1 , Autumn 2012, , Pages 13-24

http://dx.doi.org/10.22050/ijogst.2012.2771

Abstract
  Recently, due to the very good market in ethane as a feedstock for petrochemical complexes, there are some plans to make a deep ethane recovery from the gases produced in Iran southern fields. In this work, the feasibility of different technologies for deep ethane recovery from a specified feed gas produced ...  Read More

Petroleum Engineering – Reservoir
55. A Review of Reservoir Rock Typing Methods in Carbonate Reservoirs: Relation between Geological, Seismic, and Reservoir Rock Types

Ali Kadkhodaie-Ilkhchi; Rahim Kadkhodaie-Ilkhchi

Volume 7, Issue 4 , Autumn 2018, , Pages 13-35

http://dx.doi.org/10.22050/ijogst.2019.136243.1461

Abstract
  Carbonate reservoirs rock typing plays a pivotal role in the construction of reservoir static models and volumetric calculations. The procedure for rock type determination starts with the determination of depositional and diagenetic rock types through petrographic studies of the thin sections prepared ...  Read More

Petroleum Engineering
56. A New Methodology to Define Net Pay Zone in Gas Reservoirs

Mehdi Qassamipour; Elnaz Khodapanah; Seyyed Alireza Tabatabaei-Nezhad

Volume 9, Issue 2 , Spring 2020, , Pages 13-30

http://dx.doi.org/10.22050/ijogst.2020.196320.1516

Abstract
  Net pay thickness is defined as that portion of a reservoir which contains economically producible hydrocarbons with today’s technology, prices, and costs. This thickness is a key parameter of the volumetric calculation of in-place hydrocarbons, well test interpretation, and reservoir characterization. ...  Read More

Petroleum Engineering – Reservoir
57. A Novel Approach to Measuring Water and Oil Relative Permeabilities in Two-phase Fluid Flow in Porous Media

Azadeh Mamghaderi; Behzad Rostami; Seyed Hamed Tabatabaie

Volume 7, Issue 2 , Spring 2018, , Pages 14-34

http://dx.doi.org/10.22050/ijogst.2018.106164.1425

Abstract
  In this study, direct laboratory measurements of unsteady-state imbibition test are used in a new approach to obtain relative permeability curves with no predetermined functionality assumptions. Four equations of continuity, Darcy’s law, cumulative oil production, and water fractional flow are ...  Read More

Petroleum Engineering – Exploration
58. Amplitude Variation with Offset Inversion Analysis in One of the Western Oilfields of the Persian Gulf

Benyamin Khadem; Abdolrahim Javaherian

Volume 8, Issue 2 , Spring 2019, , Pages 15-33

http://dx.doi.org/10.22050/ijogst.2018.125135.1444

Abstract
  Reservoir characterization has a leading role in the reservoir geophysics and reservoir management. Since the interests of the reservoir geophysics and reservoir managements are the elastic properties and reservoir properties of the subsurface rock for their purposes, a robust method is required for ...  Read More

Petroleum Engineering – Exploration
59. Shear wave velocity estimation utilizing statistical and multi-intelligent models from petrophysical data in a mixed carbonate-siliciclastic reservoir, SW Iran

Ziba Hosseini; Sajjad Gharechelou; Asadollah Mahboubi; Reza Moussavi-Harami; Ali Kadkhodaie-Ilkhchi; Mohsen Zeinali

Volume 10, Issue 1 , Winter 2021, , Pages 15-39

http://dx.doi.org/10.22050/ijogst.2020.241095.1556

Abstract
  The conjugation of two or more Artificial Intelligent (AI) models used to design a single model that has increased in popularity over the recent years for exploration of hydrocarbon reservoirs. In this research, we have successfully predicted shear wave velocity (Vs) with higher accuracy through the ...  Read More

Chemical Engineering
60. Investigating the Treatment of Oil and Gas Produced Water Using a Spray Dryer on a Bench Scale

Mohammad Razaghiyan; Mahmood Reza Rahimi; Hajir Karimi

Volume 9, Issue 1 , Winter 2020, , Pages 16-32

http://dx.doi.org/10.22050/ijogst.2019.196098.1514

Abstract
  The current work investigates the performance of a single-stage, bench-scale system using a spray dryer to treat produced water. The produced water is generated in three large reservoirs of Ahvaz, Maroon, and Mansouri fields, which have different compositions but the same high total dissolved solids ...  Read More

Petroleum Engineering
61. An Evaluation of Rock Integrity and Fault Reactivation in the Cap Rock and Reservoir Rock Due to Pressure Variations

Mohammad Abdideh; Yaghob Hamid

Volume 8, Issue 3 , Summer 2019, , Pages 18-39

http://dx.doi.org/10.22050/ijogst.2019.136347.1462

Abstract
  Cap rocks are dams which can prevent the upward movement of hydrocarbons. They have disparities and weaknesses including discontinuities, crushed areas, and faults. Gas injection is an effective mechanism for oil recovery and pore pressure. With increasing pore pressure, normal stress is reduced, and ...  Read More

Petroleum Engineering
62. Foam Application in Fractured Carbonate Reservoirs: A Simulation Study

Ahmed Zoeir; Mohammad Chahardowli; Mohammad Simjoo

Volume 8, Issue 4 , Autumn 2019, , Pages 18-34

http://dx.doi.org/10.22050/ijogst.2019.147229.1476

Abstract
  Fractured carbonate reservoirs account for 25% of world’s total oil resources and for 90% of Iranian oil reserves. Since calcite and dolomite minerals are oil wet, gas oil gravity drainage (GOGD) is known as the most influencing production mechanism. The most important issue within gas injection ...  Read More

Petroleum Engineering
63. A Kinetic Investigation into the In Situ Combustion Reactions of Iranian Heavy Oil from Kuh-E-Mond Reservoir

Milad Karimian; Mahin Schaffie; Mohammad Hassan Fazaelipoor

Volume 6, Issue 4 , Autumn 2017, , Pages 18-32

http://dx.doi.org/10.22050/ijogst.2017.82422.1390

Abstract
  An efficient design of in situ combustion depends on accurate kinetic modeling of the crude oil oxidation. The kinetic triplet of the oxidation reactions of a heavy oil sample was investigated. Once the kinetic triplet is known, the kinetic equation would be deconvolved. The crude oil sample was obtained ...  Read More

Petroleum Engineering – Reservoir
64. Chemical, physical characterization and salinity distribution of the oilfield water in the Upper Sandstone Member of the Zubair reservoir at Rumaila North Oilfield, Southern Iraq

Salih Awadh

Volume 7, Issue 1 , Winter 2018, , Pages 20-39

http://dx.doi.org/10.22050/ijogst.2017.80561.1388

Abstract
  The oilfield water in the Upper Sandstone Member of the Zubair reservoir (Barriemian-Hauterivian) at Rumaila North Oil Field was investigated for the interpretation of salinity and geochemical evolution of brine compositions. The interaction of the oilfield water with reservoir rock resulted in a brine ...  Read More

65. Delineating Hydrocarbon Bearing Zones Using Elastic Impedance Inversion: A Persian Gulf Example

Haleh Karbalaali; Seyed Reza Shadizadeh; Mohammad Ali Riahi

Volume 2, Issue 2 , Spring 2013, , Pages 8-19

http://dx.doi.org/10.22050/ijogst.2013.3534

Abstract
  Reservoir characterization plays an important role in different parts of an industrial project. The results from a reservoir characterization study give insight into rock and fluid properties which can optimize the choice of drilling locations and reduce risk and uncertainty. Delineating hydrocarbon ...  Read More

66. Investigating the Effects of Heterogeneity, Injection Rate, and Water Influx on GAGD EOR in Naturally Fractured Reservoirs

Misagh Delalat; Riyaz Kharrat

Volume 2, Issue 1 , Winter 2013, , Pages 9-21

http://dx.doi.org/10.22050/ijogst.2013.3034

Abstract
  The gas-assisted gravity drainage (GAGD) process is designed and practiced based on gravity drainage idea and uses the advantage of density difference between injected CO2 and reservoir oil. In this work, one of Iran western oilfields was selected as a case study and a sector model was simulated based ...  Read More

67. Development of an Intelligent System to Synthesize Petrophysical Well Logs

Morteza Nouri Taleghani; Sadegh Saffarzadeh; Mina Karimi Khaledi; Ghasem Zargar

Volume 2, Issue 3 , Summer 2013, , Pages 11-24

http://dx.doi.org/10.22050/ijogst.2013.3641

Abstract
  Porosity is one of the fundamental petrophysical properties that should be evaluated for hydrocarbon bearing reservoirs. It is a vital factor in precise understanding of reservoir quality in a hydrocarbon field. Log data are exceedingly crucial information in petroleum industries, for many of hydrocarbon ...  Read More

68. Identifying Flow Units Using an Artificial Neural Network Approach Optimized by the Imperialist Competitive Algorithm

Seyyed Hossein Hosseini Bidgoli; Ghasem Zargar; Mohammad Ali Riahi

Volume 3, Issue 3 , Summer 2014, , Pages 11-25

http://dx.doi.org/10.22050/ijogst.2014.6618

Abstract
  The spatial distribution of petrophysical properties within the reservoirs is one of the most important factors in reservoir characterization. Flow units are the continuous body over a specific reservoir volume within which the geological and petrophysical properties are the same. Accordingly, an accurate ...  Read More

69. Estimation of Flow Zone Indicator Distribution by Using Seismic Data: A Case Study from a Central Iranian Oilfield

Mahdi Rastegarnia; Ali Kadkhodaie

Volume 2, Issue 4 , Autumn 2013, , Pages 12-25

http://dx.doi.org/10.22050/ijogst.2013.4793

Abstract
  Flow unit characterization plays an important role in heterogeneity analysis and reservoir simulation studies. Usually, a correct description of the lateral variations of reservoir is associated with uncertainties. From this point of view, the well data alone does not cover reservoir properties. Because ...  Read More

70. Simulation and Assessment of Surfactant Injection in Fractured Reservoirs: A Sensitivity Analysis of some Uncertain Parameters

Mohammad Hasan Badizad; Ahmad Reza Zanganeh; Amir Hossein Saeedi Dehaghani

Volume 5, Issue 1 , Winter 2016, , Pages 13-26

http://dx.doi.org/10.22050/ijogst.2016.13826

Abstract
  Fracture reservoirs contain most of the oil reserves of the Middle East. Such reservoirs are poorly understood and recovery from fractured reservoirs is typically lower than those from conventional reservoirs. Many efforts have been made to enhance the recovery and production potential of these reservoirs. ...  Read More

71. Investigation of Performance of Ni / Clinoptilolite Nanoadsorbents in Desulfurization of Gas Oil: Experimental Design and Modeling

Seyed Ali Hosseini; Sirus Nouri; Sajad Hashemi; Mansor Akbari

Volume 6, Issue 1 , Winter 2017, , Pages 13-25

http://dx.doi.org/10.22050/ijogst.2017.44344

Abstract
  The removal of sulfur compounds from petroleum is extremely necessary for industrial and environmental reasons. Sulfur in transportation fuels is a major air pollution source. In this work, the efficiency of nanostructured Ni-clinoptilolite adsorbent was investigated in the removal of sulfur from gas ...  Read More

72. An Influence of Polymer-Alkaline and Nanoparticles as Chemical Additives on the Immiscible Displacement and Phase Relative Permeability

Elham Mortazavi; Mohsen Masihi; Mohammad Hosein Ghazanfari

Volume 5, Issue 3 , Summer 2016, , Pages 14-31

http://dx.doi.org/10.22050/ijogst.2016.38523

Abstract
  In this study, a chemical additive made by a combination of polymer, alkaline, and silica nanoparticles is used to control the oil recovery and relative permeability curves. Various parametersincluding the type and concentration of polymer, alkaline, and nanosilica particles have been studied.To evaluate ...  Read More

73. An Investigation of Abnormal Fluid Pressure within an Evaporitic Cap Rock in the Gavbandi Area of Iran and its Impact on the Planning of Gas Exploration Wells

Mahdi Najafi; Abbas Bahroudi; Ali Yassaghi; Jaume Vergés; Shahram Sherkati

Volume 3, Issue 1 , Winter 2014, , Pages 15-21

http://dx.doi.org/10.22050/ijogst.2014.5797

Abstract
  A synthesis of well logs was carried out and drilling mud weight data were analyzed to figure out anomalous high fluid pressure within the Triassic evaporitic cap rock (the Dashtak formation) and study its impact on the geometry of anticlinal traps in the gas rich Gavbandi province located in the southeast ...  Read More

74. Evaluation of the Effects of Nanoclay Addition on the Corrosion Resistance of Bituminous Coating

Hamid Reza Zamanizadeh; Mohammad Reza Shishesaz; Iman Danaee; Davood Zaarei

Volume 4, Issue 2 , Spring 2015, , Pages 15-26

http://dx.doi.org/10.22050/ijogst.2015.9590

Abstract
  In this study, the corrosion resistance of a bituminous coating reinforced with different ratios of nanoclay pigment was studied. To make nanocomposite coatings, 2, 3, and 4 wt.% of clay (Cloisite Na+) were incorporated into water emulsified bitumen. The coatings were applied to steel 37. Optical microscopy ...  Read More

75. Minimizing Water Invasion into Kazhdumi Shale Using Nanoparticles

Aghil Moslemizadeh; Seyed Reza Shadizadeh

Volume 4, Issue 4 , Autumn 2015, , Pages 15-32

http://dx.doi.org/10.22050/ijogst.2016.12475

Abstract
  Fluid invasion from water-based drilling mud (WBDM) into the shale formations causes swelling, high pressure zone near the wellbore wall, and eventually wellbore instability problems during drilling operations. For the stability of the wellbore, physical plugging of nanoscale pore throats could be considered ...  Read More