Research Paper
1. Enhanced Removal of Pb+2 from Wastewater Using Combination of Ultrasound and nZVI Methods

mirroozbeh jamei; mohammad khosravi nikou

Volume 6, Issue 3 , Summer 2017, Pages 1-11

http://dx.doi.org/10.22050/ijogst.2017.57758

Abstract
  This research reported a new method of removal of Pb+2from water by using a nano zero valent iron (nZVI) assisted ultrasonic wave. At first, nZVI was synthesized by an ultrasound assisted method. Particles morphology and surface composition were characterized by FESEM, XRD, and EDX. The XRD patterns ...  Read More

Research Paper Petroleum Engineering
2. 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

Research Paper Petroleum Engineering
3. Modeling Critical Flow through Choke for a Gas-condensate Reservoir Based on Drill Stem Test Data

Ahmad Lak; Reza Azin; Shahriar Osfouri; Rouhollah Fatehi

Volume 6, Issue 3 , Summer 2017, Pages 29-40

http://dx.doi.org/10.22050/ijogst.2017.69063.1371

Abstract
  Gas-condensate reservoirs contain hydrocarbon fluids with characteristics between oil and gas reservoirs and a high gas-liquid ratio. Due to the large gas-liquid ratio, wellhead choke calculations using the empirical equations such as Gilbert may contain considerable error. In this study, using drill ...  Read More

Research Paper Chemical Engineering
4. A Molecular Simulation of Natural Gas Dehydration by 3A Zeolite Nanostructure

behrouz Bayati; Mahmoud Rahmati

Volume 6, Issue 3 , Summer 2017, Pages 68-78

http://dx.doi.org/10.22050/ijogst.2018.57856

Abstract
  The adsorption and separation properties of 3A zeolite are investigated by using Grand Canonical Monte Carlo (GCMC) simulation. To obtain the adsorption isotherms of water, methyl mercaptan, and methane on 3A zeolite, COMPASS Force Filed is used. The adsorption isotherms of the pure components and the ...  Read More

Research Paper Petroleum Engineering
5. An Investigation of Optimum Miscible Gas Flooding Scenario: A Case Study of an Iranian Carbonates Formation

Mohsen Montazeri; Saeid Sadeghnejad

Volume 6, Issue 3 , Summer 2017, Pages 41-54

http://dx.doi.org/10.22050/ijogst.2017.68920.1370

Abstract
  Gas injection into carbonate formations is one of the most important activities to protect oil reserves that can guarantee a steady production. On-time injection of enough gas can result in the recovery of billions barrels of oil. In addition, it can preserve a huge amount of gas for the next generations. ...  Read More

Research Paper Chemical Engineering
6. An Experimental Investigation of Reactive Absorption of Carbon Dioxide into an Aqueous NH3/H2O/NaOH Solution

Ahad Ghaemi; Vahid Hashemzadeh; Shahrokh Shahhosseini

Volume 6, Issue 3 , Summer 2017, Pages 55-67

http://dx.doi.org/10.22050/ijogst.2017.57858

Abstract
  In this research, the reactive absorption of carbon dioxide in an aqueous solution of NH3, H2O, and NaOH has experimentally been investigated. The experiments were carried out in an absorption pilot plant in different operational conditions. The composition and temperature of both gas and liquid phases ...  Read More