Research Paper Hydrocarbon Reservoirs Management
1. Geochemical Appraisal of the Depositional Environment and Source Organic Matter of Crude Oils from Some Oil Fields in Bayelsa State, Nigeria

Charles Ikenna Oraegbunam; Leo Osuji; Mudiaga Onojake; Selegha Abrakasa

Volume 9, Issue 3 , Summer 2020, Pages 1-10

http://dx.doi.org/10.22050/ijogst.2020.221306.1538

Abstract
  The organic geochemical characterization of crude oil samples from the oil fields of the Niger delta was carried out using gas chromatography–-mass spectrometry (GC–-MS) to genetically characterize the oil samples in terms of their biomarker composition. Geochemical characteristics such as ...  Read More

Research Paper Petroleum Engineering
2. Analyzing Single- and Two-parameter Models for Describing Oil Recovery in Imbibition from Fractured Reservoirs

Mojtaba Ghaedi; Sadegh Ahmadpour

Volume 9, Issue 3 , Summer 2020, Pages 11-25

http://dx.doi.org/10.22050/ijogst.2020.207829.1524

Abstract
  The imbibition process is known as one of the main production mechanisms in fractured reservoirs where oil/gas-filled matrix blocks are surrounded by water-filled fractures. Different forces such as gravity and capillary play a role in production from a fractured reservoir during imbibition and complicate ...  Read More

Research Paper Chemical Engineering
3. Experimental Measurement of Equilibrium Surface Tension of an Aqueous Solution of Polyethylene Glycol and a Surfactant

Fateme Beiranvand; Seyed Hesam Najibi; Bahram Hashemi Shahraki

Volume 9, Issue 3 , Summer 2020, Pages 26-43

http://dx.doi.org/10.22050/ijogst.2020.198631.1519

Abstract
  A device is designed and constructed for measuring the equilibrium surface tension of water and a number of other solutions. The measured equilibrium surface tension of water, as a reference fluid, has good consistency with literature data. Moreover, the equilibrium surface tension of the aqueous solutions ...  Read More

Research Paper Technical Inspection Engineering
4. Investigation into Mechanism of Hydrogen Induced Cracking Failure in Carbon Steel: A Case Study of Oil and Gas Industry

Mohsen Asadipoor; Ali Pourkamali Anaraki; Javad Kadkhodapour; Seyed Mohammad Hosein Sharifi; Afrooz Barnoush

Volume 9, Issue 3 , Summer 2020, Pages 44-60

http://dx.doi.org/10.22050/ijogst.2020.210113.1529

Abstract
  Abstract Although the hydrogen induced cracking (HIC) is recognized as one of the destructive modes for pipeline and component steels serving in sour environments, the behavior of the HIC is still not fully understood. On the other hand, although many efforts have been made to identify the effects of ...  Read More

Research Paper Oil and Gas Economics and Management
5. Projection Friction Stir Spot Welding: A New Welding Technique for Creating Safe and Reliable Aluminum Welds

Ali Arabzadeh; Seyed Mostafa Mousavizade; Bahman Korojy; Seyed Alireza Hosseini

Volume 9, Issue 3 , Summer 2020, Pages 61-76

http://dx.doi.org/10.22050/ijogst.2020.208981.1527

Abstract
  A novel friction stir welding method called projection friction stir spot welding (PFSSW) was introduced to produce safe and reliable welds by using a pinless tool and a specially-designed projection on the surface of a backing anvil. This projection along with the tool rotation speed plays an important ...  Read More

Research Paper Petroleum Engineering
6. Mass Transfer Modeling of CO2 Absorption into Blended Aqueous MDEA–PZ Solution

Fahimeh Mirzaei; Ahad Ghaemi

Volume 9, Issue 3 , Summer 2020, Pages 77-101

http://dx.doi.org/10.22050/ijogst.2020.222615.1540

Abstract
  In this research, the rate of CO2 absorption into methyl diethanolamine–piperazine (MDEA–PZ) solution was investigated. To model the mass transfer flux in the reactive absorption processes, the dimensionless parameters of the process were obtained using the Buckingham Pi theorem and considering ...  Read More

Research Paper Petroleum Engineering
7. Identifying Gas-bearing Carbonate Reservoir Using Extended Elastic Impedance

Hessam MansouriSiahgoli; Mohammad Ali Riahi; Bahare Heidari; Reza Mohebian

Volume 9, Issue 3 , Summer 2020, Pages 102-115

http://dx.doi.org/10.22050/ijogst.2020.218837.1535

Abstract
  It is difficult to identify the carbonate reservoirs by using conventional seismic reflection data, especially in cases where the reflection coefficient of the gas-bearing zone is close to that of the carbonate background. In such cases, the extended elastic impedance (EEI) as a seismic reconnaissance ...  Read More