Results 21 to 30 of about 787 (114)

A Hydrodynamic Study in a Sieve Plate Sectionalized Bubble Column [PDF]

open access: yesEngineering and Technology Journal, 2011
The sectionalization of conventional bubble columns to tray bubble column by perforated trays has been used in chemical, biochemical, and petroleum processes as an effective way to improve the gas-liquid contacting efficiency, and reduce liquid ...
Burhan Sadeq Abdulrazzaq
doaj   +1 more source

Salinity Independent Flow Measurement of Vertical Upward Gas-Liquid Flows in a Small Pipe Using Conductance Method

open access: yesSensors, 2020
Flow measurement in gas-liquid two-phase flow is always a challenging work, because of the non-uniform phase distribution, severe slippage effect between phases, and different flow structures.
Dayang Wang   +3 more
doaj   +1 more source

Feasibility Study on Downhole Gas–Liquid Separator Design and Experiment Based on the Phase Isolation Method

open access: yesApplied Sciences, 2021
As oil exploitation enters its middle and late stages, formation pressure drops, and crude oil degases. In production profile logging, the presence of the gas phase will affect the initial oil–water two-phase flowmeter’s flow measurement results.
Yuntong Yang   +5 more
doaj   +1 more source

Effect of Surfactants on Gas Holdup in Shear-Thinning Fluids

open access: yesInternational Journal of Chemical Engineering, 2017
In this study, the gas holdup of bubble swarms in shear-thinning fluids was experimentally studied at superficial gas velocities ranging from 0.001 to 0.02 m·s−1.
Shaobai Li, Siyuan Huang, Jungeng Fan
doaj   +1 more source

Hydrodynamics of pulsed sieve-plate extraction columns [PDF]

open access: yesHemijska Industrija, 2020
This paper presents a review of some hydrodynamic parameters in pulsed sieve-plate extraction columns. The hydrodynamic parameters in liquid-liquid systems in these columns were analyzed regarding the effects of operating and geometrical parameters.
Sovilj Milan N.   +1 more
doaj   +1 more source

Pressure gradient prediction of gas-liquid two-phase pipe flow in horizontal gas wells

open access: yesShenzhen Daxue xuebao. Ligong ban, 2022
Accurate prediction of pressure gradient in gas wells is the theoretical basis for dynamic analysis, optimization of production and deliquification technologies design.
LUO Chengcheng   +7 more
doaj   +1 more source

Numerical Simulation and Holdup Prediction of Oil-Water Two-Phase in Low Yield Shale Oil Near Horizontal Wells

open access: yesCejing jishu
The production of shale oil wells is typically low, and logging instruments such as the flow scanning imager (FSI) may exhibit poor turbine response in low-production wells, leading to measurement deviations and reduced interpretation accuracy.
QIN Honglong   +3 more
doaj   +1 more source

Numerical Simulation of Gas-Liquid Flow in a Bubble Column by Intermittent Aeration in Newtonian Liquid/Non-Newtonian Liquid

open access: yesInternational Journal of Chemical Engineering, 2018
The dynamic behaviors of gas-liquid two-phase flow were simulated in a lab-scale intermittent bubble column by Euler-Euler two-fluid model coupled with the PBM (population balance model) using two different liquid phases, i.e., Newtonian fluid (water ...
Zheng Xipeng   +4 more
doaj   +1 more source

Attenuation law of MWD pulses in aerated drilling

open access: yesPetroleum Exploration and Development, 2012
A mathematical model for predicting the attenuation of measurement while drilling (MWD) pressure pulses in aerated drilling was proposed using the two-phase flow model and considering the momentum and energy exchange at the phase interface, gravity of ...
Hongtao LI   +5 more
doaj   +1 more source

Study on Optical Fiber Gas-Holdup Meter Signal Denoising Using Improved Threshold Wavelet Transform

open access: yesIEEE Access, 2023
The optical fiber probe gas-holdup meter is a new logging tool, which can be used to measure the gas-holdup of oil-gas-water three-phase flow during production logging.
Shengxue Du, Shujun Chen
doaj   +1 more source

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