Three-way PLS regression and dual energy gamma densitometry for prediction of total volume fractions and enhanced flow regime identification in multiphase flow

Halstensen, Maths; Amundsen, Lene; Arvoh, Benjamin Kaku

doi:10.1016/j.flowmeasinst.2014.09.006

Cited by 8 publications

(4 citation statements)

References 15 publications

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“…The accuracy of the pressure-based technique compares well with other densitometry techniques that were experimentally evaluated in multiphase flow-loops in published literature. For example, Halstensen et al [7], using gamma-ray densitometry, attained root-mean-square error of 4.06% which translates to about ±6.7% (90 percentile) in GVF measurement, while Tjugum and Mihalca [8], using x-ray densitometry, attained a standard deviation of 3.48% which translates to about ±5.7% (90 percentile) in GVF measurement.…”

Section: Resultsmentioning

confidence: 99%

“…• Gamma-ray [7] or x-ray attenuation [8] in which a beam, at a given energy level, is passed through a representative portion of the fluid and its intensity attenuates as a function of fluid density. The radioactive/x-ray sources in these devices are safety hazards requiring specialized operator training and restrictive shipping/handling.…”

Section: Introductionmentioning

confidence: 99%

“…The radioactive/x-ray sources in these devices are safety hazards requiring specialized operator training and restrictive shipping/handling. These techniques also require longer measurement (integration) times, as high as 20-25 s in some cases [7,8].…”

Section: Introductionmentioning

confidence: 99%

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A non-nuclear inline densitometer for multiphase flows

Ramakrishnan

Arsalan

Deffenbaugh

2023

Meas. Sci. Technol.

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Multiphase flowmeters (MPFMs) are used in the oil-and-gas industry to measure real-time flow rates of oil, gas, and brine, flowing simultaneously as a non-homogeneous mixture, in a pipeline from wellhead to separator. Since these flow rates cannot be measured directly, they are inferred from other measurements including mixture density. Mixture density is commonly measured using nuclear densitometers which can be problematic in terms of safety and maintenance. This paper details the development – concept and experimental validation – of a non-nuclear inline densitometer that measures multiphase mixture density using pressure sensors. A comprehensive flow-loop test was conducted at a commercial facility to evaluate the technology under a wide range of flow conditions – flow rates 1000 to 10000 bpd, gas fractions 0 to 96%, water cuts 0 to 100%, with a synthetic oil as liquid hydrocarbon, methane as gas medium, two water salinities – totaling nearly 300 test points. The results from this experimental validation – specifically, the technology’s accuracy and operating envelope – point to a groundbreaking practical solution to a long-standing problem.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A non-nuclear inline densitometer for multiphase flows

Ramakrishnan

Arsalan

Deffenbaugh

2023

Meas. Sci. Technol.

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“…The latter, especially the γ-ray absorption method, are also utilised by the authors of this paper in the evaluation of two-phase liquid-solids and liquid-gas flows [11][12][13][14]. Other scientific teams use radioisotope methods to study the flow of liquids [15][16][17] and various multiphase mixtures [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Metrology and Measurement Systems

Hanus,

Zych,

Mosorov

et al. 2020

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Liquid-gas flows in pipelines appear in many industrial processes, e.g. in the nuclear, mining, and oil industry. The gamma-absorption technique is one of the methods that can be successfully applied to study such flows.This paper presents the use of the gamma-absorption method to determine the water-air flow parameters in a horizontal pipeline. Three flow types were studied in this work: plug, transitional plug-bubble, and bubble one. In the research, a radiometric set consisting of two Am-241 sources and two NaI(TI) scintillation detectors have been applied. Based on the analysis of the signals from both scintillation detectors, the gas phase velocity was calculated using the cross-correlation method (CCM). The signal from one detector was used to determine the void fraction and to recognise the flow regime. In the latter case, a Multi-Layer Perceptron-type artificial neural network (ANN) was applied. To reduce the number of signal features, the principal component analysis (PCA) was used. The expanded uncertainties of gas velocity and void fraction obtained for the flow types studied in this paper did not exceed 4.3% and 7.4% respectively. All three types of analyzed flows were recognised with 100% accuracy. Results of the experiments confirm the usefulness of the gamma-ray absorption method in combination with radiometric signal analysis by CCM and ANN with PCA for comprehensive analysis of liquid-gas flow in the pipeline.

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Partial Least Squares (PLS) Methods for Abnormal Detection of Breast Cells

Zhu

Chen

et al. 2017

Communications in Computer and Information Science

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Three-way PLS regression and dual energy gamma densitometry for prediction of total volume fractions and enhanced flow regime identification in multiphase flow

Cited by 8 publications

References 15 publications

A non-nuclear inline densitometer for multiphase flows

A non-nuclear inline densitometer for multiphase flows

Metrology and Measurement Systems

Partial Least Squares (PLS) Methods for Abnormal Detection of Breast Cells

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