Research Paper
2. 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

Research Paper
3. Evaluation of a Naturally-derived Deflocculant (Terminalia Chebula) in Bentonite Dispersions

Jalal Neshat; Seyed Reza Shadizadeh

Volume 5, Issue 2 , Spring 2016, Pages 21-44

http://dx.doi.org/10.22050/ijogst.2016.15788

Abstract
  The unwanted addition of salt to drilling causes flocculation which has an adverse effect on mud rheological properties. To treat the flocculated mud chemical, deflocculants are commonly used; however, their disadvantages such as negative environmental effects, lower tolerance to contamination, and toxicity ...  Read More

Research Paper
4. Asphaltene Deposition Modeling during Natural Depletion and Developing a New Method for Multiphase Flash Calculation

Gholamreza Fallahnejad; Riyaz Kharrat

Volume 5, Issue 2 , Spring 2016, Pages 45-65

http://dx.doi.org/10.22050/ijogst.2016.15798

Abstract
  The specific objective of this paper is to develop a fully implicit compositional simulator for modeling asphaltene deposition during natural depletion. In this study, a mathematical model for asphaltene deposition modeling is presented followed by the solution approach using the fully implicit scheme. ...  Read More

Research Paper
5. Three-component Distillation Columns Sequencing: Including Configurations with Divided-wall Columns

Amirhossein Khalili-Garakani; Javad Ivakpour; Norollah Kasiri

Volume 5, Issue 2 , Spring 2016, Pages 66-83

http://dx.doi.org/10.22050/ijogst.2016.15799

Abstract
  In the present work, the exergy analysis and economic study of 3 different samples of threecomponent mixtures have been investigated (ESI>1, ESI≈1, and ESI<1). The feed mixture has been tested under three different compositions (low, equal, and high contents of the intermediate component). ...  Read More

Research Paper
6. Hydroisomerization of n-Pentane over Pt/Mordenite Catalyst: Effect of Feed Composition and Process Conditions

Behrouz Bayati; Mahboobeh Ejtemaei; Nazanin Charchi Aghdam; Ali Akbar Babaluo; Mohammad Haghighi; Amir Sharafi

Volume 5, Issue 2 , Spring 2016, Pages 84-99

http://dx.doi.org/10.22050/ijogst.2016.15800

Abstract
  The hydroisomerization of pure n-pentane over H-mordenite supported Pt-catalyst was investigated in a fixed bed reactor by changing reaction parameters such as temperature, pressure, and WHSV, as well as the H2/HC ratio. The maximum yield of isopentane over Pt/mordenite catalyst was achieved at 220 °C ...  Read More

Research Paper
7. 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