Results 251 to 260 of about 1,922 (276)
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Effects of liquid height on gas holdup in air–water bubble column
Experimental Thermal and Fluid Science, 2016Abstract Effects of the initial liquid height, H 0 , of air–water bubble columns on the total gas holdup, α G , were investigated in this study. Systematic databases of α G in a rectangular and a cylindrical column of the hydraulic diameter D H of 200 mm were obtained. An image processing method was applied to high-speed video images of the
Shohei Sasaki +2 more
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Applied Geophysics, 2016
Oil reservoirs with low permeability and porosity that are in the middle and late exploitation periods in China’s onshore oil fields are mostly in the high-water-cut production stage. This stage is associated with severely non-uniform local-velocity flow profiles and dispersed-phase concentration (of oil droplets) in oil-water two-phase flow, which ...
An Zhao +4 more
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Oil reservoirs with low permeability and porosity that are in the middle and late exploitation periods in China’s onshore oil fields are mostly in the high-water-cut production stage. This stage is associated with severely non-uniform local-velocity flow profiles and dispersed-phase concentration (of oil droplets) in oil-water two-phase flow, which ...
An Zhao +4 more
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IEEE Sensors Journal, 2018
A three-channel conductance probe has been proposed to measure the water holdup in oil-in-water flows with low-flow rate and high-water cut. The probe consists of three pairs of arc shape electrodes with center body. The geometry of the electrodes in each channel has been optimized using the finite-element method.
Jidong Wei +5 more
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A three-channel conductance probe has been proposed to measure the water holdup in oil-in-water flows with low-flow rate and high-water cut. The probe consists of three pairs of arc shape electrodes with center body. The geometry of the electrodes in each channel has been optimized using the finite-element method.
Jidong Wei +5 more
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Ultrasonics
Oil-water two-phase flow is commonly encountered in petroleum extraction and transportation processes. Due to the slip effect, the oil-water two-phase flow in oil wells exhibits extremely complex and random fluid dynamic behaviors, posing significant challenges for measuring the water holdup overall flow patterns.
Jiachen Zhang +5 more
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Oil-water two-phase flow is commonly encountered in petroleum extraction and transportation processes. Due to the slip effect, the oil-water two-phase flow in oil wells exhibits extremely complex and random fluid dynamic behaviors, posing significant challenges for measuring the water holdup overall flow patterns.
Jiachen Zhang +5 more
openaire +2 more sources
Measurement of High Water Holdup in Oil-in-Water Flows Using Reticular Microwave Resonant Sensor
IEEE Transactions on Instrumentation and Measurement, 2022Landi Bai +4 more
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Measurement of water holdup in oil-in-water emulsions in wellbores using microwave resonance sensor
Applied Geophysics, 2021Ningde Jin +3 more
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Permanent dynamic and static water holdup measuring device for ground wellhead
Measurement Science and TechnologyAbstract To adapt to the reality that a large number of wells are dispersed in the oilfield and the measured output fluid inside the wells contains less gas, a permanent dynamic and static water holdup measuring device for ground wellhead (PDSWHMD_GW) is designed, and a phase holdup system based on PDSWHMD_GW is developed for different ...
Deming Kong +5 more
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A STUDY OF WATER HOLDUP ON TWO SURFACES WITH DIFFERENT HYDROCHARACTERISTICS
Journal of Flow Visualization and Image Processing, 2000Jongmin Shin +3 more
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Water Holdup Measurement in Oil–Water Flows With Staggered Double Helix Microwave Sensor
IEEE Sensors Journal, 2023Landi Bai +3 more
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