Optimum geometric position of detectors around thick hydrocarbon pipes for deposition pattern detection and scale thickness measurement

Articles in Press

Document Type : Mechanics article

Authors

1 Department of Nuclear Engineering, School of Mechanical Engineering, Shiraz University, Shiraz, Iran

2 Imaging and Instrumentation Research Group-Radiation Application Research School-Nuclear Science and Engineering Research Institute-Tehran-Iran

Abstract

Ensuring flow with the increasing need to extract oil and gas from reservoirs is known as a big challenge, and in the meantime, scale deposition in pipelines is a major problem. Since scale deposition occurs in a short time, it is especially important to control and predict it in pipelines as soon as possible. There are several methods for predicting the deposition pattern and measuring its thickness. The gamma transmission method is a non-destructive method for this task. The application of this technique requires optimal placement of the detectors and radioactive source around the pipe so that the measurement can be made with maximum accuracy in a short time. The cost, the ability to deploy the instrument at various positions on the platform and underwater, and minimization of absorbed dose to the operator are other important goals that should be considered. In this study, using the geometric analysis and Monte Carlo simulation, it is shown that the fan-shaped arrangement of the detectors with certain spacing around the pipe can lead to an optimal measurement of the deposition regime and the scale thickness.

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Main Subjects

Journal of Modeling in Engineering

Articles in Press, Accepted Manuscript
Available Online from 31 December 2023

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History

  • Receive Date: 09 June 2023
  • Revise Date: 10 December 2023
  • Accept Date: 23 December 2023

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