scholarly journals Inverse Problem Models of Oil-Water Two-Phase Flow Based on Buckley-Leverett Theory

2013 ◽  
Vol 2013 ◽  
pp. 1-6
Author(s):  
Rui Huang ◽  
Xiaodong Wu ◽  
Ruihe Wang ◽  
Hui Li
Keyword(s):  
Inverse Problem ◽  
Relative Permeability ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Form Expression ◽  
Two Phase ◽  
Problem Model ◽  
Natural Logarithm ◽  
Oil Water ◽  
Water Cut

Based on Buckley-Leverett theory, one inverse problem model of the oil-water relative permeability was modeled and proved when the oil-water relative permeability equations obey the exponential form expression, and under the condition of the formation permeability that natural logarithm distribution always obey normal distribution, the other inverse problem model on the formation permeability was proved. These inverse problem models have been assumed in up-scaling cases to achieve the equations by minimization of objective function different between calculation water cut and real water cut, which can provide a reference for researching oil-water two-phase flow theory and reservoir numerical simulation technology.

Ultrasonic method for measuring water holdup of low velocity and high-water-cut oil-water two-phase flow

2016 ◽  
Vol 13 (1) ◽  
pp. 179-193 ◽  
Author(s):  
An Zhao ◽  
Yun-Feng Han ◽  
Ying-Yu Ren ◽  
Lu-Sheng Zhai ◽  
Ning-De in
Keyword(s):  
Two Phase Flow ◽  
Ultrasonic Method ◽  
High Water ◽  
Phase Flow ◽  
Low Velocity ◽  
Two Phase ◽  
Oil Water ◽  
High Water Cut ◽  
Water Cut

scholarly journals Novel Downhole Electromagnetic Flowmeter for Oil-Water Two-Phase Flow in High-Water-Cut Oil-Producing Wells

Sensors ◽  
2016 ◽  
Vol 16 (10) ◽  
pp. 1703 ◽  
Author(s):  
Yanjun Wang ◽  
Haoyu Li ◽  
Xingbin Liu ◽  
Yuhui Zhang ◽  
Ronghua Xie ◽  
...  
Keyword(s):  
Two Phase Flow ◽  
Electromagnetic Flowmeter ◽  
High Water ◽  
Phase Flow ◽  
Two Phase ◽  
Oil Water ◽  
High Water Cut ◽  
Water Cut

Characterising Dynamic Instability in High Water-Cut Oil-Water Flows Using High-Resolution Microwave Sensor Signals

2018 ◽  
Vol 73 (6) ◽  
pp. 485-499
Author(s):  
Weixin Liu ◽  
Ningde Jin ◽  
Yunfeng Han ◽  
Jing Ma
Keyword(s):  
High Resolution ◽  
Two Phase Flow ◽  
Dynamic Instability ◽  
High Water ◽  
Phase Flow ◽  
Two Phase ◽  
Multi Scale ◽  
Oil Water ◽  
High Water Cut ◽  
Water Cut

AbstractIn the present study, multi-scale entropy algorithm was used to characterise the complex flow phenomena of turbulent droplets in high water-cut oil-water two-phase flow. First, we compared multi-scale weighted permutation entropy (MWPE), multi-scale approximate entropy (MAE), multi-scale sample entropy (MSE) and multi-scale complexity measure (MCM) for typical nonlinear systems. The results show that MWPE presents satisfied variability with scale and anti-noise ability. Accordingly, we conducted an experiment of vertical upward oil-water two-phase flow with high water-cut and collected the signals of a high-resolution microwave resonant sensor, based on which two indexes, the entropy rate and mean value of MWPE, were extracted. Besides, the effects of total flow rate and water-cut on these two indexes were analysed. Our researches show that MWPE is an effective method to uncover the dynamic instability of oil-water two-phase flow with high water-cut.

Effect of fines migration on oil–water relative permeability during two-phase flow in porous media

Fuel ◽  
2016 ◽  
Vol 176 ◽  
pp. 222-236 ◽  
Author(s):  
Abbas Zeinijahromi ◽  
Rouhi Farajzadeh ◽  
J. (Hans) Bruining ◽  
Pavel Bedrikovetsky
Keyword(s):  
Porous Media ◽  
Relative Permeability ◽  
Two Phase Flow ◽  
Flow In Porous Media ◽  
Phase Flow ◽  
Two Phase ◽  
Fines Migration ◽  
Oil Water

scholarly journals The Influence on Response of a Combined Capacitance Sensor in Horizontal Oil–Water Two-Phase Flow

2019 ◽  
Vol 9 (2) ◽  
pp. 346 ◽  
Author(s):  
Lei Li ◽  
Lingfu Kong ◽  
Beibei Xie ◽  
Xin Fang ◽  
Weihang Kong ◽  
...  
Keyword(s):  
High Speed ◽  
Two Phase Flow ◽  
Flow Patterns ◽  
Phase Flow ◽  
Capacitance Sensor ◽  
Two Phase ◽  
Horizontal Pipe ◽  
Response Characteristics ◽  
Oil Water ◽  
Water Cut

In the process of production logging interpretation, a water cut is one of the key factors to obtain the oil phase content in the oil well. In order to measure the water cut of the horizontal oil–water two-phase flow with low yield, the response characteristics of the combined capacitance sensor (CCS) are investigated under different flow patterns. Firstly, the measuring principles of coaxial, cylindrical, and CCS are introduced in detail. Then, according to the different flow pattern conditions of the horizontal oil–water two-phase flow, the response characteristics of the CCS are simulated and analyzed using the finite element method. Additionally, compared with the other two sensors, the advantages of the CCS are verified. Finally, the temperature and pressure calibration experiments are carried out on the CCS. The horizontal oil–water two-phase flow patterns in a low yield liquid level are divided in detail with a high-speed camera. Dynamic experiments are carried out in a horizontal pipe with an inner diameter of 125 mm on the horizontal oil–water two-phase flow experimental equipment. The simulation and experimental results show that the CCS has good response characteristics under different working conditions.

scholarly journals Relative permeability estimation of oil-water two-phase flow in shale reservoir

2021 ◽  
Author(s):  
Yu-Liang Su ◽  
Ji-Long Xu ◽  
Wen-Dong Wang ◽  
Han Wang ◽  
Shi-Yuan Zhan
Keyword(s):  
Relative Permeability ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase ◽  
Permeability Estimation ◽  
Shale Reservoir ◽  
Oil Water

scholarly journals Study of Oil-Water Two-Phase Stratified Flow in Horizontal Fractures

2020 ◽  
Vol 185 ◽  
pp. 04033
Author(s):  
Na Huang ◽  
Dongxu Liu ◽  
Yuhan Sun ◽  
Lei Liu
Keyword(s):  
Aspect Ratio ◽  
Relative Permeability ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Relative Permeabilities ◽  
Two Phase ◽  
Horizontal Fracture ◽  
Flow Equations ◽  
Basic Fluid ◽  
Oil Water

The relative permeability of oil-water two-phase flow is an important parameter in fractured petroleum reservoirs. It is widely accepted that the sum of relative permeabilities is less than 1. In this study, a series of experiments have been conducted on six rectangular fractures for oil-water two-phase flows. Analytical investigations of the effects of flow rate, aspect ratio, and fracture size on the relative permeability of oil-water two-phase are analysed. Basic fluid flow equations are combined to develop a new analytical model for water-oil two-phase flow in a horizontal fracture. The simulation results predicted by this model are in good agreement with the experimental data. The relative permeability is a function of flow ratio, viscosity ratio, aspect ratio and saturation. It increases as aspect ratio increases if the fracture depths are the same, while it decreases as aspect ratio increases if the fracture widths are identical. Both experiment and model indicate that the sum of relative permeabilities of oil and water is greater than 1 in some cases, different from the accepted view.

Oil-water relative permeability in shale considering the effect of kerogen: Modelling and analysis

2021 ◽  
pp. 1-27
Author(s):  
Jiangfeng Cui
Keyword(s):  
Relative Permeability ◽  
Two Phase Flow ◽  
Phase Distribution ◽  
Enhanced Recovery ◽  
Oil Reservoirs ◽  
Phase Flow ◽  
Shale Oil ◽  
Two Phase ◽  
Oil Water ◽  
Shale Oil Reservoirs

Abstract Nontrivial initial water and the indispensable hydraulic fracturing technique for enhanced recovery result in the prevalence of oil-water two-phase flow in shale oil reservoirs. However, limited research has focused on their presumably unique flow characteristics so far. In this paper, based on assumptions about the two-phase distribution pattern, the relative permeability models for organic/inorganic pores are established. Then, the two models are combined by an upscaling model to arrive at the expression for the relative permeability of shale rocks. Effects of TOC (Total Organic Carbon), pore size, and slip length are considered. Sensitivity analysis demonstrates their impacts on the relative permeability of inorganic/organic media and the shale rock. This is the very first work that provides an analytical relative permeability model for the oil/water two-phase flow in shale matrix considering the effect of kerogen, and it is important for understanding the performance of shale oil reservoirs and other kinds of nanoporous media.

Water cut measurement of oil–water two-phase flow in the resonant cavity sensor based on analytical field solution method

Measurement ◽  
2021 ◽  
Vol 174 ◽  
pp. 109078
Author(s):  
Yiguang Yang ◽  
Ying Xu ◽  
Chao Yuan ◽  
Jinghan Wang ◽  
Haitao Wu ◽  
...  
Keyword(s):  
Solution Method ◽  
Two Phase Flow ◽  
Resonant Cavity ◽  
Phase Flow ◽  
Two Phase ◽  
Field Solution ◽  
Oil Water ◽  
Water Cut
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