Research Paper Petroleum Engineering – Reservoir
Predicting the Permeability Using Geometric Properties of Micro-Computed Tomography Images by Linear Regression Models

Mohammad Ashrafi; Seyyed Alireza Tabatabaei-Nezhad; Elnaz Khodapanah

Volume 10, Issue 4 , October 2021, Pages 1-13

http://dx.doi.org/10.22050/ijogst.2021.289006.1597

Abstract
  Challenges of rock absolute permeability prediction of tiny samples are remarkable when laboratory apparatus is not applicable and there is no pore network modeling. The prediction using the characterization of micro-computed tomography images has been studied in this paper. Twenty series of 2D micro-computed ...  Read More

Research Paper Instrumentation & Automation in Oil Industries
Sensor Fault Diagnosis Using an Algorithm Based on Auto-Associative Neural Networks

Hamidreza Mousavi; Mehdi Shahbazian

Volume 10, Issue 4 , October 2021, Pages 14-30

http://dx.doi.org/10.22050/ijogst.2021.293463.1606

Abstract
  Auto-associative neural network (AANN) has been recently used in sensor fault diagnosis. This paper introduces a new AANN based algorithm named improved AANN (I-AANN) for sensor single-fault diagnosis. An algorithm is a two-aimed approach that estimates the correct value of the faulty sensor by isolating ...  Read More

Research Paper Geophysics
Failure Mechanisms and Solutions for Fin-Pass Rolls Repair-Ring at an Electric Resistance Welding Pipe Plant

Mahammad Laribaghal; mehdi Torfi; Mehdi Khorasanian; Seyyed Reza Alavi Zaree

Volume 10, Issue 4 , October 2021, Pages 31-42

http://dx.doi.org/10.22050/ijogst.2021.302007.1609

Abstract
  Fin-pass rolls are the latest series of rolls in electric resistance welding (ERW) pipe production lines that form the sheets to tubular shape and adjust the edges of the sheet for welding. The rolls (made of AISI 8622 steel) lose their proper function after about 10 years of operation due to severe ...  Read More

Research Paper Petroleum Engineering
Screening Produced Water Disposal Challenges in an Oilfield: Scale Formation and Injectivity Impairment

Mehdi Amiri; Jafar Qajar; Azim Kalantariasl

Volume 10, Issue 4 , October 2021, Pages 43-57

http://dx.doi.org/10.22050/ijogst.2022.221240.1539

Abstract
  Sarvestan and Saadatabad oilfields produce more than 140 bbl/day of wastewater due to oil processing. Due to environmental issues, the produced water is injected into a disposal well through a pipeline with a diameter of 8 inch and a length of 5 km. Formation of inorganic scale may accelerate the need ...  Read More

Research Paper Petroleum Engineering
Laboratory Analysis of the Rheology of a Polymer-based Mud Produced from Magnetic Water as a Fluid Used in Oil Well Drilling

Borzu Asgari pirbalouti

Volume 10, Issue 4 , October 2021, Pages 58-67

http://dx.doi.org/10.22050/ijogst.2022.238781.1554

Abstract
  This study investigated the application of iron oxide nanoparticles in the presence of an external magnetic field to control the rheology of drilling fluids. Drilling fluid rheology is one of the most critical factors in determining the optimal fluid. Drilling fluid must have good rheological properties ...  Read More

Research Paper Petroleum Engineering – Exploration
Geochemical Evaluation of Oils from the Asmari Reservoir of the Qale-Nar Oilfield: Implication for Field-Scale Reservoir Compartmentalization

Bahram Habibnia; Omid Vallipour; Majid Alipour

Volume 10, Issue 4 , October 2021, Pages 68-84

http://dx.doi.org/10.22050/ijogst.2022.307365.1614

Abstract
  The Qale-Nar oilfield is an asymmetric two-humped anticline located in the northernmost part of the Dezful embayment, in which the fractured Asmari carbonates are the primary reservoir rock. In this study, for the first time, the organic geochemistry of oils produced from the Asmari reservoir is used ...  Read More

Research Paper Petroleum Engineering – Production
Modeling of Gel-Acid Injection for Optimizing the Acidizing Process and Comparing It with Core Injection Experimental Data: Case Study in One of Iranian Southwest Oilfields

Abdorrahman Mehri Ghahfarrokhi; Hassan Shokrollahzadeh Behbahani; Ezzatollah Kazemzadeh; Gholam Abbas Safian

Volume 10, Issue 4 , October 2021, Pages 85-99

http://dx.doi.org/10.22050/ijogst.2022.213717.1531

Abstract
  Nowadays, use of visco-elastic surfactants as the main component of gel diverters is becoming more and more common among well completion engineers, as well as stimulation service companies. Gel diverter, as other kinds of diverters, is used in multi-layered carbonated reservoirs to diver acid into less ...  Read More