Research Paper Chemical Engineering
1. Study on Effect of inhibitor on wax precipitation in Iranian oil fields by using differential scanning calorimetry and microscopy

behrouz Bayati; mohsen mansouri; Hossein Hejazi

Articles in Press, Accepted Manuscript, Available Online from 14 July 2021

http://dx.doi.org/10.22050/ijogst.2021.275683.1585

Abstract
  In this study, effect of ethylene vinyl acetate (EVA) as an inhibitor on wax appearance temperature (WAT) of crude oil in the Iranian oil field has been investigated using differential scanning calorimetry (DSC) method. The effect of EVA on the morphology of crude oil wax crystals has been investigated ...  Read More

Research Paper
2. Experimental investigation of permeability reduction due to migration of non-swelling clay minerals

Siavash Ashoori; Ehsan Safavi; Jamshid Moghaddasi; Parvin Kolahkaj

Articles in Press, Accepted Manuscript, Available Online from 15 July 2021

http://dx.doi.org/10.22050/ijogst.2021.273802.1584

Abstract
  AbstractFormation damage is being reported during the secondary and tertiary stages of reservoir lifespan. One of the unpleasant sequences of formation damage caused by fine particles is permeability reduction due to pore plugging and bridging. The fine particles might exist initially in a porous medium, ...  Read More

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

Mohammad Ashrafi; Seyyed Alireza Tabatabaei-Nejad; Elnaz Khodapanah

Articles in Press, Accepted Manuscript, Available Online from 07 August 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 Hydrocarbon Reservoirs Management
4. Geochemical Investigation of Trace Metals in Crude Oils from Some Producing Oil Fields in Niger Delta, Nigeria

TEMPLE N CHIKWE; Mudiaga Onojake

Articles in Press, Accepted Manuscript, Available Online from 17 August 2021

http://dx.doi.org/10.22050/ijogst.2021.262613.1580

Abstract
  The concentrations of trace metals in crude oil samples obtained from eight producing fields from Niger Delta Nigeria were analyzed using a 700 model Perkin Elmer Atomic Absorption Spectrophotometer. Results showed the following ranges for the trace metals, Cu (0.01- 0.04 mg/kg); Fe (0.05 – 5.90 ...  Read More

Research Paper Petroleum Engineering
5. Detection of heavy bitumen contaminations with using corrected Rock-Eval pyrolysis data

Meisam Hemmati; Yaser Ahmadi

Articles in Press, Accepted Manuscript, Available Online from 20 August 2021

http://dx.doi.org/10.22050/ijogst.2021.290550.1598

Abstract
  The Rock-Eval pyrolysis is a thermal method that is widely used by the petroleum geologist for evaluation of source rock characteristics and obtain geochemistry parameters. However, there are misconceptions and misuse in exceptional cases which could lead to erroneous conclusions in using Rock-Eval pyrolysis ...  Read More

Research Paper Petroleum Engineering
6. Investigation of origin, sedimentary environment and preservation of organic matter: A case study in Garau Formation

Meisam Hemmati; Yaser Ahmadi

Articles in Press, Accepted Manuscript, Available Online from 23 August 2021

http://dx.doi.org/10.22050/ijogst.2021.291679.1601

Abstract
  Knowing the characteristics of suitable environments for precipitation of oil prone source rocks facilitates oil explorations and leads to development of oil fields. The current study investigates the organic matter properties and sedimentary environment conditions of the Garau Formation in various outcrop ...  Read More

Research Paper Petroleum Engineering
7. Evaluation of a novel mechanistic approach to predict transport of water and ions through shale

Nima Hamidian Shoormasti; Seyyed Alireza Tabatabaei-Nezhad; seyyedalireza Tabatabaei-Nezhad

Articles in Press, Accepted Manuscript, Available Online from 02 September 2021

http://dx.doi.org/10.22050/ijogst.2021.226919.1546

Abstract
  Prediction of transport parameters is an important issue in shale formations. A unique and novel method to address this subject is the Revil model (Revil et al. 2011) which has been updated here for multivalent salts. The updated model for water and ion transport through shale has been evaluated against ...  Read More

Research Paper Petroleum Engineering
8. Relation between asphaltene adsorption on the nanoparticles surface and asphaltene precipitation inhibition during real crude oil natural depletion tests

Yaser Ahmadi

Articles in Press, Accepted Manuscript, Available Online from 05 September 2021

http://dx.doi.org/10.22050/ijogst.2021.291675.1600

Abstract
  Using nanoparticles for adsorbing asphaltene was known as one of efficient methods among researchers for upgrading of real oil samples in comparison to other expensive mechanical treatments or even solvents (such as n-pentane and n-heptane) and surfactants. In this study, Nickel zeolite oxide nanoparticles ...  Read More