An experimental evaluation of the effect of homogenization quality as a preconditioning on oil-water two-phase volume fraction measurement accuracy using gamma-ray attenuation technique

2018 ◽  
Vol 13 (02) ◽  
pp. P02012-P02012
Author(s):  
M. Sharifzadeh ◽  
S.H. Hashemabadi ◽  
H. Afarideh ◽  
H. Khalafi
Keyword(s):  
Experimental Evaluation ◽  
Measurement Accuracy ◽  
Gamma Ray ◽  
Volume Fraction ◽  
Phase Volume ◽  
Two Phase ◽  
Phase Volume Fraction ◽  
Gamma Ray Attenuation ◽  
Oil Water ◽  
Fraction Measurement

Precise volume fraction measurement for three-phase flow meter using 137Cs gamma source and one detector

2020 ◽  
Vol 108 (2) ◽  
pp. 159-164
Author(s):  
S. Z. Islami rad ◽  
R. Gholipour Peyvandi
Keyword(s):  
Neural Network ◽  
Gamma Ray ◽  
Volume Fraction ◽  
Mlp Neural Network ◽  
Three Phase ◽  
Three Phase Flow ◽  
Gamma Ray Attenuation ◽  
Set Up ◽  
Fraction Measurement ◽  
Error Percentage

AbstractThe ability to precisely predict the volume fraction percentage of the different phases flowing in a pipe plays an important role in the oil, petroleum and other industries. In this research, the volume fraction percentage was measured precisely in water-gasoil-air three-phase flows by using a single pencil beam gamma ray attenuation technique and multilayer perceptron (MLP) neural network. The volume fraction percentage determination in three-phase flows requires least two gamma radioactive sources with different energies while in this study, we used just a 137Cs source (with the single energy of 662 keV) and a NaI detector. Also, in this work, the MLP neural network in MATLAB software was implemented to predict the volume fraction percentage. The experimental setup provides the required data for training and testing the network. Using this proposed method, the volume fraction was predicted in water-gasoil-air three-phase flows with mean relative error percentage less than 6.95 %. Also, the root mean square error was calculated 2.60. The set-up used is simpler than other proposed methods and cost, radiation safety and shielding requirements are minimized.

Prediction of Frictional Pressure Gradient in Horizontal Oil/Water Dispersion Flow

SPE Journal ◽  
2010 ◽  
Vol 16 (01) ◽  
pp. 148-154 ◽  
Author(s):  
Jany Carolina Vielma ◽  
Ovadia Shoham ◽  
Ram S. Mohan ◽  
Luis E. Gomez
Keyword(s):  
Pressure Gradient ◽  
Volume Fraction ◽  
Average Error ◽  
Dispersed Phase ◽  
Phase Volume ◽  
Water Dispersion ◽  
Phase Volume Fraction ◽  
Law Of The Wall ◽  
Oil Water ◽  
The Law

Summary A novel model has been developed for the prediction of frictional pressure gradient in unstable turbulent oil/water dispersion flow in horizontal pipes. This model uses the friction-factor approach, based on the law of the wall, to predict the pressure gradient. Modification of both the von Karman coefficient κ' and the parameter B' have been carried out in the law of the wall to include the effect of the dispersed phase—namely, the dispersed-phase volume fraction and the characteristic-droplet-size diameters. The developed model applies to both dilute and dense flows, covering the entire range of water cuts. Model predictions have been compared with a comprehensive experimental database collected from literature, resulting in an absolute average error of 9.6%. Also, the comparisons demonstrate that the developed model properly represents the physical phenomena exhibited in unstable turbulent oil/water dispersions. These include drag reduction, increase in frictional pressure gradient with increasing dispersed-phase volume fraction, and the peak in the frictional pressure gradient at the oil/water phase-inversion region.

CEN/VAMAS Study of Phase Volume Fraction Measurement - A Preliminary Review of Results

1997 ◽  
Vol 132-136 ◽  
pp. 2111-2114
Author(s):  
E.G. Bennett ◽  
L.J.M.G. Dortmans ◽  
M. Hendrix ◽  
Roger Morrell ◽  
G. de With
Keyword(s):  
Volume Fraction ◽  
Preliminary Review ◽  
Phase Volume ◽  
Phase Volume Fraction ◽  
Fraction Measurement

scholarly journals Precise Void Fraction Measurement in Two-phase Flows Independent of the Flow Regime Using Gamma-ray Attenuation

2016 ◽  
Vol 48 (1) ◽  
pp. 64-71 ◽  
Author(s):  
E. Nazemi ◽  
S.A.H. Feghhi ◽  
G.H. Roshani ◽  
R. Gholipour Peyvandi ◽  
S. Setayeshi
Keyword(s):  
Flow Regime ◽  
Void Fraction ◽  
Gamma Ray ◽  
Two Phase Flows ◽  
Two Phase ◽  
Gamma Ray Attenuation ◽  
Fraction Measurement

Phase volume fraction measurement of slug flow with surfactant based on an image-quick closing valve method

2021 ◽  
Vol 78 ◽  
pp. 101881
Author(s):  
Pengbo Yin ◽  
Xuewen Cao ◽  
Pan Zhang ◽  
Jiang Bian ◽  
Xiang Li ◽  
...  
Keyword(s):  
Slug Flow ◽  
Volume Fraction ◽  
Phase Volume ◽  
Phase Volume Fraction ◽  
Fraction Measurement

scholarly journals Volume Fraction Measurement in Crude Oil-Water Two-Phase Mixture using a Neutron Beam

2017 ◽  
Vol 2 (2) ◽  
pp. 57-63
Author(s):  
Abdullah A. Kendoush ◽  
Hameed B. Mahood ◽  
Ibrahim G. Fiadh
Keyword(s):  
Crude Oil ◽  
Neutron Source ◽  
Neutron Beam ◽  
Volume Fraction ◽  
Water Mixture ◽  
Two Phase ◽  
Oil In Water ◽  
Oil Water ◽  
Phase Mixture ◽  
Fraction Measurement

A neutron beam has been used to measure the volume fraction of crude oil in water of non- flow two-phase mixture experimentally.241Am-Be neutron source were used with an activity of 3.7x104 MBq. The volume fraction was simulated by using small plastic tubes filled with oil and immersed in non-flow water tube. The results show that it is feasible to measure the volume fraction of crude oil in a crude oil-water mixture.

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