Oil-Water Two-Phase Flow Behavior in Shale Inorganic Nanopores: From Molecule Level to Theoretical Mathematical Model

Mechanistic models have been developed for each of the existing two-phase flow patterns in an annulus, namely bubble flow, dispersed bubble flow, slug flow, and annular flow. These models are based on two-phase flow physical phenomena and incorporate annulus characteristics such as casing and tubing diameters and degree of eccentricity. The models also apply the new predictive means for friction factor and Taylor bubble rise velocity presented in Part I. Given a set of flow conditions, the existing flow pattern in the system can be predicted. The developed models are applied next for predicting the flow behavior, including the average volumetric liquid holdup and the average total pressure gradient for the existing flow pattern. In general, good agreement was observed between the experimental data and model predictions.

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Mechanistic Prediction of Oil-Water, Two-Phase Flow in Horizontal or Near-Horizontal Pipes for a Wide Range of Oil Viscosities

10.2118/174726-ms ◽

2015 ◽

Author(s):

Liwei Li ◽

Florentina Popa ◽

Brent C. Houchens

Keyword(s):

Two Phase Flow ◽

Phase Flow ◽

Two Phase ◽

Horizontal Pipes ◽

Wide Range ◽

Oil Water

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Horizontal Oil-Water Two-Phase Flow Characterization and Identification with Pulse-Wave Ultrasonic Doppler Technique

Chemical Engineering Science ◽

10.1016/j.ces.2021.117015 ◽

2021 ◽

pp. 117015

Author(s):

Xuewei Shi ◽

Feng Dong ◽

Chao Tan

Keyword(s):

Pulse Wave ◽

Two Phase Flow ◽

Phase Flow ◽

Two Phase ◽

Doppler Technique ◽

Flow Characterization ◽

Oil Water

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Measuring Flow Pattern Asymmetry of Oil-Water Two Phase Flows Using Multi-channel Rotating Electric Field Conductance Signals

Zeitschrift für Naturforschung A ◽

10.1515/zna-2018-0312 ◽

2018 ◽

Vol 74 (1) ◽

pp. 25-41 ◽

Cited By ~ 2

Author(s):

Yuansheng He ◽

Yingyu Ren ◽

Yunfeng Han ◽

Ningde Jin

Keyword(s):

Electric Field ◽

Flow Pattern ◽

Cross Section ◽

Two Phase Flow ◽

Phase Flow ◽

Two Phase ◽

Time Asymmetry ◽

Pipe Cross Section ◽

Multi Scale ◽

Oil Water

AbstractThe present study is a report on the asymmetry of dispersed oil phase in vertical upward oil-water two phase flow. The multi-channel signals of the rotating electric field conductance sensor with eight electrodes are collected in a 20-mm inner diameter pipe, and typical images of low pattern are captured using a high speed camera. With the multi-channel rotating electric field conductance signals collected at pipe cross section, multi-scale time asymmetry (MSA) and an algorithm of multi-scale first-order difference scatter plot are employed to uncover the fluid dynamics of oil-water two phase flow. The results indicate that MSA can characterise the non-linear behaviours of oil-water two phase flow. Besides, the MSA analysis also beneficial for understanding the underlying inhomogeneous distribution of the flow pattern in different directions at pipe cross section.

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