This review critically examines advancements, performance, and challenges in wet gas measurement technologies, emphasizing the need for innovation and adaptation in industrial applications. Key advancements include the integration of machine learning (ML) for real-time calibration, hybrid metering systems combining differential pressure, ultrasonic, gamma-ray, and optical sensors, and the development of high-sensitivity hardware for diverse operational scenarios. Performance evaluations demonstrate promising accuracy by ML algorithms and hybrid systems for gas flow rates (<2%). Despite these successes, significant challenges persist, including dependency on flow regime-specific calibrations, noise interference, environmental sensitivity, and limitations in high gas and low liquid volume fractions. Besides, a lack of standardized testing and validation hampers the widespread adoption of these technologies. To address these gaps, this review recommends advancements in adaptive ML algorithms, robust and noise-resistant sensor designs, and extensive field validation across diverse conditions. The exploration of computational techniques, such as digital twins, alongside sustainability-focused designs, further highlights pathways for improvement. Through a detailed analysis of industry applications, this review assesses the suitability of existing methods while proposing a roadmap for future research to enhance measurement reliability, scalability, and adaptability in complex multiphase flow environments.
References
[1]
van Putten, D.S. and Dsouza, B.T. (2019) Wet Gas Over-Reading Correction for Ultrasonic Flow Meters. Experiments in Fluids, 60, Article No. 45. https://doi.org/10.1007/s00348-019-2693-6
[2]
van Putten, D., Riezebos, H., Bahlmann Jan Peters, R. and de Leeuw Joe Shen, R. (2018) Ultrasonic Meters in Wet Gas Applications. https://nfogm.no/wp-content/uploads/2019/02/2015-02-Ultrasonic-Meters-in-Wet-Gas-Application-van-Putten-DNV-GL.pdf
[3]
Hall, A. (2007) A Discussion on Wet Gas Flow Parameter Definitions.
[4]
Falcone, G. and Alimonti, C. (2006) Critical Review of Wet Gas Definitions.
[5]
ISO/TR12748 (2015) Technical Report ISO/TR Natural Gas: Wet Gas Flow Measurement in Natural Gas Operations.
[6]
Schreier, P. (2011) Handbook of Chinese Medicinal Plants: Chemistry, Pharmacology, Toxicology W. Tang, G. Eisenbrand Vols. I + II Wiley‐VCH, Weinheim, 2011, PP. 1150 ISBN: 978‐3‐527‐32226‐8. Molecular Nutrition & Food Research, 55, 811. https://doi.org/10.1002/mnfr.201190015
[7]
ASME (2008) Wet Gas Flow Measurement Guideline.
[8]
Mitchell, A.L., Tkacik, D.S., Roscioli, J.R., Herndon, S.C., Yacovitch, T.I., Martinez, D.M., et al. (2015) Measurements of Methane Emissions from Natural Gas Gathering Facilities and Processing Plants: Measurement Results. Environmental Science & Technology, 49, 3219-3227. https://doi.org/10.1021/es5052809
[9]
Yan, Y. and Jin, N. (2012) Measurement Techniques for Multiphase Flows. Flow Measurement and Instrumentation, 27, 1. https://doi.org/10.1016/j.flowmeasinst.2012.08.001
[10]
Johansen, E.S., Hall, A.R.W., Ünalmis, Ö.H., Rodríguez, D.J., Vera, A. and Ramakrishnan, V. (2007) A Prototype Wet-Gas and Multiphase Flowmeter. Proceedings of the 25thInternational North Sea Flow Measurement Workshop, Oslo, 16-19 October 2007.
[11]
Zhang, Q. and Liu, D. (2020) Study on Application of Wet Gas Metering Technology in Shale Gas Measurement. Flow Measurement and Instrumentation, 74, Article 101777. https://doi.org/10.1016/j.flowmeasinst.2020.101777
[12]
Collins, A. and Clark, S. (2013) Evolution of Wet Gas Venturi Metering and Wet Gas Correction Algorithms. Measurement and Control, 46, 15-20. https://doi.org/10.1177/002029401304600102
[13]
Salehi, S.M., Lao, L., Xing, L., Simms, N. and Drahm, W. (2024) Devices and Methods for Wet Gas Flow Metering: A Comprehensive Review. Flow Measurement and Instrumentation, 96, Article 102518. https://doi.org/10.1016/j.flowmeasinst.2023.102518
[14]
Oon, C.S., Ateeq, M., Shaw, A., Wylie, S., Al-Shamma’a, A. and Kazi, S.N. (2016) Detection of the Gas-Liquid Two-Phase Flow Regimes Using Non-Intrusive Microwave Cylindrical Cavity Sensor. Journal of Electromagnetic Waves and Applications, 30, 2241-2255. https://doi.org/10.1080/09205071.2016.1244019
[15]
Pochet, S., Teyssedou, A. and Akyel, C. (2014) Development and Assessment of a Microwave Void-Fraction Measurement System. Review of Scientific Instruments, 85, Article 015103. https://doi.org/10.1063/1.4859498
[16]
Xie, C. and Wu, Z. (2012) Microwave Doppler System for Multiphase Flow Measurement. AIP Conference Proceedings, 2012, 319-326. https://doi.org/10.1063/1.3694721
[17]
Ismail, I., Gamio, J.C., Bukhari, S.F.A. and Yang, W.Q. (2005) Tomography for Multi-Phase Flow Measurement in the Oil Industry. Flow Measurement and Instrumentation, 16, 145-155. https://doi.org/10.1016/j.flowmeasinst.2005.02.017
[18]
Lide, F., Tao, Z. and Ningde, J. (2007) A Comparison of Correlations Used for Venturi Wet Gas Metering in Oil and Gas Industry. Journal of Petroleum Science and Engineering, 57, 247-256. https://doi.org/10.1016/j.petrol.2006.10.010
[19]
ISO5167-1 (2003) Measure of Fluid by Means of Pressure Differential Devices Inserted in Circular Cross-Section Conduit. ISO 5167-12003.
[20]
ISO5167-4 (2003) Measurement of Fluid Flow by Means of Pressure Differential Devices Inserted in Circular Cross-Section Conduits Running. ISO.
Murdock, J.W. (1962) Two-Phase Flow Measurement with Orifices. Journal of Basic Engineering, 84, 419-432. https://doi.org/10.1115/1.3658657
[23]
Chisholm, D. (1981) Flow of Compressible Two-Phase Mixtures through Sharp-Edged Orifices. Journal of Mechanical Engineering Science, 23, 45-48. https://doi.org/10.1243/jmes_jour_1981_023_008_02
[24]
Chisholm, D. (1977) Research Note: Two-Phase Flow through Sharp-Edged Orifices. Journal of Mechanical Engineering Science, 19, 128-130. https://doi.org/10.1243/jmes_jour_1977_019_027_02
[25]
Lin, Z.H. (1982) Two-phase Flow Measurements with Sharp-Edged Orifices. International Journal of Multiphase Flow, 8, 683-693. https://doi.org/10.1016/0301-9322(82)90071-4
[26]
De Leeuw, R. (1997) Liquid Correction of Venturi Meter Readings in Wet Gas Flow.
[27]
Smith, R.V. and Leang, J.T. (1975) Evaluations of Correlations for Two-Phase Flowmeters Three Current–One New. Journal of Engineering for Power, 97, 589-593. https://doi.org/10.1115/1.3446072
[28]
Xing, L., Hua, C., Zhu, H. and Drahm, W. (2014) Flow Measurement Model of Ultrasonic Flowmeter for Gas-Liquid Two-Phase Stratified and Annular Flows. Advances in Mechanical Engineering, 6, Article 194871. https://doi.org/10.1155/2014/194871
[29]
Xing, L., Geng, Y., Hua, C., Zhu, H., Rieder, A., Drahm, W., et al. (2014) A Combination Method for Metering Gas–Liquid Two-Phase Flows of Low Liquid Loading Applying Ultrasonic and Coriolis Flowmeters. Flow Measurement and Instrumentation, 37, 135-143. https://doi.org/10.1016/j.flowmeasinst.2014.01.005
[30]
Xu, Y., Yu, P., Zhu, Z., Yuan, C. and Zhang, T. (2017) Over-Reading Modeling of the Ultrasonic Flow Meter in Wet Gas Measurement. Measurement, 98, 17-24. https://doi.org/10.1016/j.measurement.2016.11.007
[31]
Reader-Harris, M. and Graham, E. (2009) An Improved Model for Venturi-Tube Over-Reading in Wet Gas Definitions of Wet-Gas Flow. 27th International North Sea Flow Measurement Workshop, Tonsberg, 20-23 October 2009.
[32]
Xu, Y., Yuan, C., Long, Z., Zhang, Q., Li, Z. and Zhang, T. (2013) Research the Wet Gas Flow Measurement Based on Dual-Throttle Device. Flow Measurement and Instrumentation, 34, 68-75. https://doi.org/10.1016/j.flowmeasinst.2013.07.014
[33]
Tomaszewska-Wach, B. and Rzasa, M. (2021) A Correction Method for Wet Gas Flow Metering Using a Standard Orifice and Slotted Orifices. Sensors, 21, Article 2291. https://doi.org/10.3390/s21072291
[34]
He, D.H., Lu, B., Li, X., Zhou, R.F. and Bai, B.F. (2013) A New Method to Meter Wet Gas Flow Based on Double Differential Pressure. Journal of Engineering Thermophysics, 34, 878-882.
[35]
Li, S.S., Zheng, X.B., Zhao, F., He, D.H. and Bai, B.F. (2020) Comparison of Throttle Device to Measure Two-Phase Flowrates of Wet Gas with Extremely-Low Liquid Loading. Flow Measurement and Instrumentation, 76, Article 101840. https://scispace.com/papers/comparison-of-throttle-devices-to-measure-two-phase-462lb0rsz3 https://doi.org/10.1016/j.flowmeasinst.2020.101840
[36]
Tan, C., Wu, H. and Dong, F. (2013) Horizontal Oil-Water Two-Phase Flow Measurement with Information Fusion of Conductance Ring Sensor and Cone Meter. Flow Measurement and Instrumentation, 34, 83-90. https://doi.org/10.1016/j.flowmeasinst.2013.08.006
[37]
Meng, Z., Huang, Z., Wang, B., Ji, H., Li, H. and Yan, Y. (2010) Air-Water Two-Phase Flow Measurement Using a Venturi Meter and an Electrical Resistance Tomography Sensor. Flow Measurement and Instrumentation, 21, 268-276. https://doi.org/10.1016/j.flowmeasinst.2010.02.006
[38]
Lund Bø, Ø. and Nyfors, E. (2018) Paper 4.1 New Compact Wet Gas Meter Based on a Microwave Water Detection Technique and Differential Pressure Flow Measurement.
[39]
Gysling, D., Loose, D., Volz, R. and America, B.P. (2006) Wet Gas Metering Using Combination of Differential Pressure and SONAR Flow Meters.
[40]
Funck, B. and Baldwin, P. (2012) Challenges for Ultrasonic Flow Meters in Wet Gas Applications. https://nfogm.no/wp-content/uploads/2014/02/FLEXIM-GmbH-2012-NFOGM_01.pdf
[41]
Zanker, K.J. and Brown, G.J. (2000) The Performance of a Multi-Path Ultrasonic Meter with Wet Gas.
[42]
Hamid, M.I. (2019) Subsea Wet Gas Flow Measurement—A Review. https://www.researchgate.net/publication/335692229_Subsea_Wet_Gas_Flow_Measurement_-A_Review
[43]
Meribout, M., Shehzad, F., Kharoua, N. and Khezzar, L. (2020) An Ultrasonic-Based Multiphase Flow Composition Meter. Measurement, 161, Article 107806. https://doi.org/10.1016/j.measurement.2020.107806
[44]
Chang, J.S. and Morala, E.C. (1990) Determination of Two-Phase Interfacial Areas by an Ultrasonic Technique. Nuclear and Engineering Design, 122, 143-156.
[45]
Faccini, J.L.H., Su, J., Harvel, G.D. and Chang, J.S. (2018) An Advanced Ultrasonic Technique for Flow and Void Fraction Measurements of Two-Phase Flow. Proceedings of the 12th International Conference on Nuclear Engineering, Arlington, 25-29 April 2004. https://www.osti.gov/etdeweb/biblio/20967741
[46]
Weinstein, J. (2010) Multiphase Flow in Coriolis Mass Flow Meters—Error Sources and Best Practices. 28th International North Sea Flow Measurement Workshop, St Andrews, 26-29 October 2010, 355-373.
[47]
Li, M. and Henry, M. (2018) Complex Signal Processing for Coriolis Mass Flow Metering in Two-Phase Flow. Flow Measurement and Instrumentation, 64, 104-115. https://doi.org/10.1016/j.flowmeasinst.2018.10.014
[48]
Hollingsworth, J. and Morett, D. (2019) Wet Gas Performance of Coriolis Meters: Laboratory and the Field Evaluation of a New Method. 37th International North Sea Flow Measurement Workshop, Tønsberg, 22-25 October 2019, 1-8.
[49]
Agar, J. and Farchy, D. (2002) Wet Gas Metering Using Dissimilar Flow Sensors: Theory and Field Trial Results. SPE Annual Technical Conference and Exhibition, San Antonio, September 2002, SPE-77349-MS. https://doi.org/10.2118/77349-ms
[50]
de Leeuw, R. and van Maanen, H. (2011) Venturi Meters and Wet Gas Flow. https://nfogm.no/wp-content/uploads/2019/02/2011-01-Venturi-Meters-and-Wet-Gas-Flow-Leeuw-Shell.pdf
[51]
Waqas Munir, M. and Khalil, B.A. (2015) Cross Correlation Velocity Measurement of Multiphase Flow. International Journal of Scientific Research, 414, 802-807. https://www.ijsr.net/archive/v4i2/SUB151217.pdf
[52]
Meng, Y.Q. and Lucas, G. (2012) A Multiphase Flow Measurement System Comprising an Impedance Cross Correlation (ICC) Device and an Imaging Electromagnetic Flow Meter.
[53]
Monnet, J. (2005) Challenges in the Flow Measurement Engineering Studies Phases.
[54]
Manoj, K., Baker, W., et al. (2018) NonIntrusive Microwave System for Multiphase Flow Metering.
[55]
Tayyab, M., Sharawi, M.S. and Al-Sarkhi, A. (2017) A Radio Frequency Sensor Array for Dielectric Constant Estimation of Multiphase Oil Flow in Pipelines. IEEE Sensors Journal, 17, 5900-5907. https://doi.org/10.1109/jsen.2017.2732164
[56]
Sabzevari, F.M., Winter, R.S.C., Oloumi, D. and Rambabu, K. (2020) A Microwave Sensing and Imaging Method for Multiphase Flow Metering of Crude Oil Pipes. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 13, 1286-1297. https://doi.org/10.1109/jstars.2020.2977303
[57]
van Maanen, H.R.E. (2007) Measurement of the Liquid Water Flow Rate Using Microwave Sensors in Wet-Gas Meters: Not as Simple as You Might Think. 26th International North Sea Flow. Measurement Workshop, St. Andrews, 21-24 October 2007, 345-354.
[58]
Vestøl, S., Kumara, W.A.S. and Melaaen, M.C. (2017) Gamma Densitometry Measurements of Gas/Liquid Flow with Low Liquid Fractions in Horizontal and Inclined Pipes. International Journal of Computational Methods and Experimental Measurements, 6, 120-131. https://doi.org/10.2495/cmem-v6-n1-120-131
[59]
Pan, Y., Ma, Y., Huang, S., Niu, P., Wang, D. and Xie, J. (2018) A New Model for Volume Fraction Measurements of Horizontal High-Pressure Wet Gas Flow Using Gamma-Based Techniques. Experimental Thermal and Fluid Science, 96, 311-320. https://doi.org/10.1016/j.expthermflusci.2018.03.002
[60]
Li, Y., Yang, W., Xie, C., Huang, S., Wu, Z., Tsamakis, D., et al. (2013) Gas/Oil/Water Flow Measurement by Electrical Capacitance Tomography. Measurement Science and Technology, 24, Article 074001. https://doi.org/10.1088/0957-0233/24/7/074001
[61]
Shi, X., Tan, C., Dong, F., Santos, E.N.D. and Silva, M.J.D. (2021) Conductance Sensors for Multiphase Flow Measurement: A Review. IEEE Sensors Journal, 21, 12913-12925. https://doi.org/10.1109/jsen.2020.3042206
[62]
Wiedemann, P., Dias, F.D.A., Schleicher, E. and Hampel, U. (2020) Temperature Compensation for Conductivity-Based Phase Fraction Measurements with Wire-Mesh Sensors in Gas-Liquid Flows of Dilute Aqueous Solutions. Sensors, 20, Article 7114. https://doi.org/10.3390/s20247114
[63]
Meng, X., Wang, W., Shen, Z., Xiong, J. and Zhang, H. (2019) Production Logging via Coiled Tubing Fiber Optic Infrastructures (FSI) and Its Application in Shale Gas Wells. Arabian Journal of Geosciences, 12, Article No. 782. https://doi.org/10.1007/s12517-019-4885-z
[64]
Sharifzadeh, M., Khalafi, H., Afarideh, H. and Noori, E. (2017) Two-Phase Flow Component Fraction Measurement Using Gamma-Ray Attenuation Technique. Nuclear Science and Techniques, 28, Article No. 88. https://doi.org/10.1007/s41365-017-0237-4
[65]
Iliyasu, A.M., Shahsavari, M.H., Benselama, A.S., Nazemi, E. and Salama, A.S. (2024) An Optimised and Novel Capacitance-Based Sensor Design for Measuring Void Fraction in Gas-Oil Two-Phase Flow Systems. Nondestructive Testing and Evaluation, 39, 2450-2466. https://doi.org/10.1080/10589759.2023.2301492
[66]
Shi, W., Yin, G., Wang, M., Tao, L., Wu, M., Yang, Z., et al. (2023) Progress of Electrical Resistance Tomography Application in Oil and Gas Reservoirs for Development Dynamic Monitoring. Processes, 11, Article 2950. https://doi.org/10.3390/pr11102950
[67]
Hosseini, S. (2024) Enhancing Wet Gas Metering Capabilities Using Machine Learning: Implications of Data-Driven Models and Integration with Physical Principles.
[68]
Hosseini, S., Chinello, G., Lindsay, G., Smith, S. and McGlinchey, D. (2025) Multiphase Flow Measurement of Wet Gas Flow Using Machine Learning Modelling Algorithms. Sensors, 38, Article 101556. https://doi.org/10.1016/j.measen.2024.101556
[69]
Wang, H., Zhang, M. and Yang, Y. (2020) Machine Learning for Multiphase Flowrate Estimation with Time Series Sensing Data. Sensors, 10, Article 100025. https://doi.org/10.1016/j.measen.2020.100025
[70]
Gryzlov, A., Mironova, L., Safonov, S. and Arsalan, M. (2021) Evaluation of Machine Learning Methods for Prediction of Multiphase Production Rates. SPE Symposium: Artificial Intelligence—Towards a Resilient and Efficient Energy Industry, Virtual, 18-19 October 2021, SPE-208648-MS. https://doi.org/10.2118/208648-ms
[71]
Zhang, J. and Li, J. (2023) A Novel Method for Wet Gas Flow Measurements Based on an Over-Reading Principle. Fluid Dynamics & Materials Processing, 19, 303-313. https://doi.org/10.32604/fdmp.2022.020723
[72]
Zhu, L., Chen, X., Ouyang, B., Yan, W., Lei, H., Chen, Z., et al. (2022) Review of Machine Learning for Hydrodynamics, Transport, and Reactions in Multiphase Flows and Reactors. Industrial & Engineering Chemistry Research, 61, 9901-9949. https://doi.org/10.1021/acs.iecr.2c01036
[73]
Kumar, M., Elbeltagi, A., et al. (2021) Prediction of Daily Streamflow Using Various Kernel Function Based Regression: A Case Study in India. ResearchSquare, 1-36.
[74]
Shrestha, N. (2020) Detecting Multicollinearity in Regression Analysis. American Journal of Applied Mathematics and Statistics, 8, 39-42. https://doi.org/10.12691/ajams-8-2-1
[75]
Collins, A., Hu, J.L., Tudge, M. and Wade, C. (2010) The Development of and Initial Data from a New Multiphase Wet Gas Meter. 28th International North Sea Flow Measurement Workshop, St. Andrews, 26-29 October 2010, 165-186.
[76]
Zhang, Q. (2023) AI and Machine Learning for Microwaves—A Highlight of Past, Present and Future Trends. 2023 IEEE/MTT-S International Microwave Symposium, San Diego, 11-16 June 2023, 7. https://doi.org/10.1109/ims37964.2023.10187936
[77]
Tait, P., Chen, Y., Senjyu, W., Watanabe, T., Inamura, Y., Presotto, V., et al. (2022) Determination of Void Fraction in Wet-Gas Vertical Flows via Differential Pressure Measurement. Flow Measurement and Instrumentation, 83, Article 102080. https://doi.org/10.1016/j.flowmeasinst.2021.102080
[78]
Google Cloud (2025) AI and ML Perspective: Cost Optimization.
[79]
Arellano, Y., Mollo, N.J., Løvseth, S.W., Stang, H.G.J. and Bottino, G. (2022) Characterization of an Ultrasonic Flowmeter for Liquid and Dense Phase Carbon Dioxide Under Static Conditions. IEEE Sensors Journal, 22, 14601-14609. https://doi.org/10.1109/JSEN.2022.3180075
[80]
Graham, E.M., Reader-Harris, M., Forsyth, C. and Pinguet, B. (2018) Low-Cost Measurement Option for Wet-Gas Flows to Optimise Reservoir/Production Management. Offshore Technology Conference Asia, Kuala Lumpur, 20-23 March 2018.
[81]
Emerson (2017) Roxar Subsea Wetgas Meter: A Specialized Meter for Gas and Gas Condensate Fields. https://www.emerson.com/documents/automation/download-full-specs-en-us-91080.pdf
[82]
Bydoun, M. and Tyssen, I. (2009) Operational Experience Roxar Wetgas Meters, Offshore Egypt. 27th International North Sea Flow Measurement Workshop, Tonsberg, 20-23 October 2009, 180-186.
[83]
Emerson (2021) RoxarTM 2600 MPFM Multiphase Flow Meter with Rapid Adaptive MeasurementTM Roxar 2600 Multiphase Flow Meter Model Options and Specifications. https://www.emerson.com/documents/automation/product-data-sheet-roxar-2600-mpfm-multiphase-flow-meter-en-170812.pdf
Siemens (2024) SITRANS FM MAG 8000 SITRANS FM (Electromagnetic) Battery-Operated Water Meters SITRANS FM (Electromagnetic).
[86]
Seniorsonic, R. (2024) 4-Path Gas Ultrasonic Flow Meter.
[87]
Chen, J., Wang, Y., Zhang, W., Qiu, L. and Zhang, X. (2017) Capacitance-Based Liquid Holdup Measurement of Cryogenic Two-Phase Flow in a Nearly-Horizontal Tube. Cryogenics, 84, 69-75. https://doi.org/10.1016/j.cryogenics.2017.04.006
