Research Paper Petroleum Engineering – Reservoir
1. Investigating The Permeability Prediction Using Geometric Properties of Micro Computed Tomography Images by Linear Regression Models

Mohammad Ashrafi; Seyyed Alireza Tabatabaei-Nejad; Elnaz Khodapanah

Volume 10, Issue 4 , Autumn 2021

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

Abstract
  Challenges on rock absolute permeability prediction from tiny sample when laboratory apparatus is not applicable and without pore network modelling is remarkable. This prediction using the characterization of micro-computed tomography images have been studied in this paper. Twenty series of 2D micro ...  Read More

Research Paper Instrumentation & Automation in Oil Industries
2. Sensor Fault Diagnosis using Auto-Associative Neural Networks Based algorithm

Hamidreza Mousavi; Mehdi Shahbazian

Volume 10, Issue 4 , Autumn 2021

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

Abstract
  Abstract— Auto-associative neural network (AANN) has been recently used in sensor fault diagnostics. In this paper we introduce a new AANN based algorithm named Improved AANN (I-AANN) for sensor single-fault diagnosis. The algorithm is two-aimed approach which estimates the correct value of the ...  Read More

Research Paper Geophysics
3. Failure mechanisms of fin-pass rolls repair-ring at an electric resistance welding pipe plant and the solutions thereof

Mahammad Laribaghal; mehdi Torfi; mehdi khorasanian; seyyed reza alavi zaree

Volume 10, Issue 4 , Autumn 2021

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

Abstract
  Fin-pass rolls are the latest series of rolls at ERW pipe production lines that are forming the sheets to tubular shape and adjusting the edges of the sheet for welding. The rolls (made of AISI 8622 steel) lose their useful function after about ten years of operation due to severe wear and change of ...  Read More

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

Mehdi Amiri; Jafar Gajar; Azim Kalantari asl

Volume 10, Issue 4 , Autumn 2021

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

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

Research Paper Petroleum Engineering
5. Laboratory analysis of the rheology of a polymer-based mud produced with magnetic water as a fluid used in oil well drilling

Borzu Asgari pirbalouti

Volume 10, Issue 4 , Autumn 2021

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

Abstract
  In this study, the application of iron oxide nanoparticles has been investigated in the presence of an external magnetic field to control the rheology of drilling fluids. Drilling fluid rheology is one of the most important factors for determining the optimal fluid. On the other hand, polymers in the ...  Read More