Iranian Journal of Oil and Gas Science and Technology
Quarterly Publication

A Feasibility Study on Gamma-Ray Densitometer Utilization for Density Measurement of Petroleum Products at Shahid Ahmadi-Roshan Petroleum Storage in Kerman Province, Iran

Articles in Press

Document Type : Research Paper

Authors

Ahmad Esmaili Torshabi 1
Zahra Pedrami 1
Mohammad Ali Bijari 1
Amir Reza Khoshhal 2
Ali Negarestani 1
Yaser Hamidi 3

1 Faculty of Sciences and Modern Technologies, Graduate University of Advanced Technology, Haftbagh highway, 7631885356 Kerman, Iran

2 Faculty of Sciences and Modern Technologies, Graduate University of Advanced Technology, Kerman Iran

3 National Iranian Oil Products Distribution Company, 7613667355, Kerman Iran

10.22050/ijogst.2025.470628.1714
Abstract
Recently, several techniques have been suggested for measuring fluid density, as a highly applicable parameter in industries. Among these, gamma-ray densitometry is highly recommended due to its benefits such as non-destructive, operator dependence and online monitoring. This study evaluates the feasibility of using gamma-ray-based density measurement at the Shahid Ahmadi-Roshan oil storage facility in Kerman Province, Iran. The results of this work are valuable due to the specific condition of pipeline maps and their physical properties at this site, as unique case study. A Monte Carlo simulation was conducted with FLUKA code, modeling two pipelines used for gasoline and gas oil transport, based on the dimensions, geometries, and elemental compositions of each to replicate actual conditions. Cobalt-60 and Cesium-137 isotropic gamma-ray sources were defined to measure photon flux with a simulated detection system. The simulations explored various densities of gasoline and gas oil, recording flux values at each density level. According to the results, both gamma-ray sources could effectively serve as primary components of the proposed densitometer. However, Cesium-137 is preferable due to its significant photon flux variations corresponding to changes in pipeline wall thickness and fluid density. A gamma-ray-based densitometer is recommended for practical use at this site, as it offers a more efficient alternative to the current operator-dependent, offline hydrometric method. Given the proximity of the two pipelines, a single-source dynamic densitometer could be implemented to substantially lower costs.

Keywords

petroleum products
density measurement
Monte Carlo simulation
fluence

Subjects

Iranian Journal of Oil and Gas Science and Technology

Articles in Press, Accepted Manuscript
Available Online from 01 July 2023

  • Receive Date 30 July 2024
  • Revise Date 06 February 2025
  • Accept Date 19 February 2025

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