scholarly journals Developing structure of two-phase flow in a large diameter pipe at low liquid flow rate

2012 ◽  
Vol 34 ◽  
pp. 70-84 ◽  
Author(s):  
Xiuzhong Shen ◽  
Takashi Hibiki ◽  
Hideo Nakamura
Keyword(s):  
Flow Rate ◽  
Liquid Flow ◽  
Two Phase Flow ◽  
Liquid Flow Rate ◽  
Large Diameter ◽  
Phase Flow ◽  
Two Phase ◽  
Large Diameter Pipe ◽  
Diameter Pipe

A study on the characteristics of upward air–water two-phase flow in a large diameter pipe

2006 ◽  
Vol 31 (1) ◽  
pp. 21-36 ◽  
Author(s):  
Xiuzhong Shen ◽  
Yasushi Saito ◽  
Kaichiro Mishima ◽  
Hideo Nakamura
Keyword(s):  
Two Phase Flow ◽  
Large Diameter ◽  
Phase Flow ◽  
Two Phase ◽  
Large Diameter Pipe ◽  
Diameter Pipe

Wet Gas Flow Metering Based on Differential Pressure and BSS Techniques

2011 ◽  
Vol 383-390 ◽  
pp. 4922-4927
Author(s):  
Peng Xia Xu ◽  
Yan Feng Geng
Keyword(s):  
Flow Rate ◽  
Liquid Flow ◽  
Gas Flow ◽  
Two Phase Flow ◽  
Liquid Flow Rate ◽  
Differential Pressure ◽  
Phase Flow ◽  
Two Phase ◽  
Flow Metering ◽  
Wet Gas

Wet gas flow is a typical two-phase flow with low liquid fractions. As differential pressure signal contains rich information of flow parameters in two-phase flow metering, a new method is proposed for wet gas flow metering based on differential pressure (DP) and blind source separation (BSS) techniques. DP signals are from a couple of slotted orifices and the BSS method is based on time-frequency analysis. A good relationship between the liquid flow rate and the characteristic quantity of the separated signal is established, and a differential pressure correlation for slotted orifice is applied to calculate the gas flow rate. The calculation results are good with 90% relative errors less than ±10%. The results also show that BSS is an effective method to extract liquid flow rate from DP signals of wet gas flow, and to analysis different interactions among the total DP readings.

scholarly journals Three-Dimensional Gas-Phasic Velocity Measurement of Two-Phase Flow in Terms of Bubble Size in a Large-Diameter Pipe

2012 ◽  
Vol 25 (5) ◽  
pp. 443-450
Author(s):  
Taizo KANAI ◽  
Masahiro FURUYA ◽  
Takahiro ARAI ◽  
Kenetsu SHIRAKAWA ◽  
Yoshihisa NISHI
Keyword(s):  
Bubble Size ◽  
Velocity Measurement ◽  
Two Phase Flow ◽  
Large Diameter ◽  
Three Dimensional ◽  
Phase Flow ◽  
Two Phase ◽  
Large Diameter Pipe ◽  
Diameter Pipe

ICONE19-44020 Multi-dimensional Two-Phase Flow Measurements in a Large-Diameter Pipe Using Wire-Mesh Sensor

2011 ◽  
Vol 2011.19 (0) ◽  
pp. _ICONE1944-_ICONE1944 ◽  
Author(s):  
Taizo KANAI ◽  
Masahiro FURUYA ◽  
Takahiro ARAI ◽  
Kenetsu SHIRAKAWA ◽  
Yoshihisa NISHI ◽  
...  
Keyword(s):  
Two Phase Flow ◽  
Large Diameter ◽  
Wire Mesh ◽  
Phase Flow ◽  
Two Phase ◽  
Flow Measurements ◽  
Large Diameter Pipe ◽  
Diameter Pipe

Modeling Oscillatory Behavior of Electrical Submersible Pump Wells Under Two-Phase Flow Conditions

2014 ◽  
Vol 136 (4) ◽  
Author(s):  
Rinaldo Antonio de Melo Vieira ◽  
Mauricio Gargaglione Prado
Keyword(s):  
Flow Rate ◽  
Liquid Flow ◽  
Two Phase Flow ◽  
Liquid Flow Rate ◽  
Oscillatory Behavior ◽  
Phase Flow ◽  
Submersible Pump ◽  
Flow Conditions ◽  
Two Phase ◽  
Electrical Submersible Pump

The effect of free gas on electrical submersible pump (ESP) performance is well known. At a constant rotational speed and constant liquid flow rate, a small amount of gas causes a mild head reduction when compared to the single phase liquid head. However, at higher gas rates, a drastic reduction in the head is observed. This critical condition, known as the surging point, is a combination of liquid and gas flow rates that cause a maximum in the head performance curve. The first derivative of the head with respect to the liquid flow rate changes sign as the liquid flow rate crosses the surging point. In several works on ESP two-phase flow performance, production conditions to the left of the surging region are described or reported as unstable operational conditions. This paper reviews basic concepts on stability of dynamical systems and shows through simulation that ESP oscillatory behavior may result from two-phase flow conditions. A specific drift flux computation code was developed to simulate the dynamic behavior of ESP wells producing without packers.

Modeling Oscillatory Behavior of ESP Wells Under Two-Phase Flow Conditions

2012 ◽  
Author(s):  
Rinaldo Antonio de Melo Vieira ◽  
Mauricio Gargaglione Prado
Keyword(s):  
Flow Rate ◽  
Liquid Flow ◽  
Gas Flow ◽  
Two Phase Flow ◽  
Liquid Flow Rate ◽  
Oscillatory Behavior ◽  
Phase Flow ◽  
Flow Conditions ◽  
Two Phase ◽  
Operational Conditions

The effect of free gas on the Electrical Submersible Pump (ESP) performance is well known. At a constant rotational speed and constant liquid flowrate, small amount of gas causes a mild head reduction when compared to the single phase liquid head. However, at higher gas rates, a drastic reduction in the head is observed. This critical condition, known as surging point, is a combination of liquid and gas flow rates that cause a maximum in the head performance curve. The first derivative of the head with respect to the liquid flow rate change sign as the liquid flow rate crosses the surging point. In several works on ESP two-phase flow performance, production conditions to the left of the surging region are described or reported as unstable operational conditions. This paper reviews basic concepts on stability of dynamical systems and shows through simulation that ESP oscillatory behavior may result from two-phase flow conditions. A specific drift flux computation code was developed to simulate the dynamic behavior of ESP wells producing without packer.

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