New Method for Fluid Level Depression Test Interpretation Based on Modern Multiphase Flow Calculation Techniques

2010 ◽  
Author(s):  
Mars Magnavievich Khasanov ◽  
Vitaly Krasnov ◽  
Rinat Khabibullin ◽  
Alexander Pashali ◽  
Andrey A. Semenov
Keyword(s):  
Multiphase Flow ◽  
New Method ◽  
Test Interpretation ◽  
Fluid Level ◽  
Flow Calculation

scholarly journals The New Method of Dynamic Interval Power Flow Calculation Based on Master-Slave Control Microgrid

2018 ◽  
Vol 394 ◽  
pp. 042014
Author(s):  
Shuai Yuan ◽  
Jun Li ◽  
Zhixiong Yang ◽  
Aikun Ma ◽  
Yuting Wang ◽  
...  
Keyword(s):  
Power Flow ◽  
New Method ◽  
Power Flow Calculation ◽  
Flow Calculation

scholarly journals A New Method for Predicting Pressure Gradient in Multiphase Flow Systems.

1994 ◽  
Vol 37 (2) ◽  
pp. 147-154
Author(s):  
A. BAYOUMI ◽  
N. EL-EMAM ◽  
A. EL-ASSAL
Keyword(s):  
Multiphase Flow ◽  
Pressure Gradient ◽  
New Method ◽  
Flow Systems

Multiphase Flow Mixture In 180° Pipe Bends

2013 ◽  
Vol 34 (2) ◽  
pp. 227-239 ◽  
Author(s):  
Marcin Pietrzak ◽  
Stanisław Witczak
Keyword(s):  
Multiphase Flow ◽  
Liquid Mixture ◽  
New Method ◽  
Horizontal Flow ◽  
Phase Flow ◽  
Pressure Drops ◽  
Multi Phase Flow ◽  
Insightful Analysis ◽  
Multi Phase

This paper presents the results of research regarding measurements of the values of pressure drops during horizontal flow of gas-liquid and gas-liquid-liquid mixture through 180o pipe bends. The conducted insightful analysis and assessment during multi-phase flow in pipe bends has enabled to develop a new method for determination of their values. This new method for determining pressure drops ensures higher precision of calculation in comparison to other methods presented in literature and can be applied for calculation of these parameters during multi-phase flows in pipe bends with various geometries.

Development of an Algorithm of Dynamic Gridding for Multiphase Flow Calculation in Wells

2011 ◽  
Vol 50 (02) ◽  
pp. 35-44
Author(s):  
Chao C. Dong ◽  
Mehdi Bahonar ◽  
Zhangxing John Chen ◽  
Jalel Azaiez
Keyword(s):  
Multiphase Flow ◽  
Flow Calculation

A New Deconvolution Technique Based on Pressure-Derivative Data for Pressure-Transient-Test Interpretation

SPE Journal ◽  
2011 ◽  
Vol 17 (01) ◽  
pp. 307-320 ◽  
Author(s):  
Mustafa Onur ◽  
Fikri J. Kuchuk
Keyword(s):  
Small Error ◽  
New Method ◽  
Late Time ◽  
Reservoir Pressure ◽  
Test Interpretation ◽  
Pressure Derivative ◽  
Pressure Transient ◽  
Significant Difference ◽  
Time Periods ◽  
Pressure Transient Test

Summary In this paper, we present a new deconvolution method that removes the dependency of the deconvolved constant-rate drawdown responses on the initial reservoir pressure. It is well known that the late-time periods in particular of the deconvolved responses from the recent pressure-rate deconvolution methods are dependent on the initial reservoir pressure. A small error in the initial reservoir pressure could make a significant difference in the late-time periods of the deconvolved responses that can lead to an incorrect interpretation model, particularly misinterpretation of the boundaries. The new method presented is based on pressure-derivative data rather than pressure data that are used in all published deconvolution algorithms. Using pressure-derivative data in deconvolution leads to a nonlinear least-squares objective function that is different from those used in the earlier deconvolution methods and eliminates the dependency of the deconvolved responses on the initial reservoir pressure. Therefore, the new method minimizes incorrect interpretation because of an error or uncertainty in the initial reservoir pressure. We apply the new method to both simulated and field pressure-transient data sets. The results show that the new method offers a significant advantage over the earlier deconvolution methods for pressure-transient-test interpretation in cases where the initial reservoir pressure is unknown or uncertain.

Application of a particle-grid hybrid method in multiphase flow calculation

2020 ◽  
Vol 57 (11) ◽  
pp. 1199-1214
Author(s):  
Shengfeng Zhang ◽  
Bin Zhang ◽  
Xiaoxing Liu ◽  
Jianqiang Shan
Keyword(s):  
Multiphase Flow ◽  
Hybrid Method ◽  
Flow Calculation

A New Method for Online Steady-State Power Flow Calculation in Electric Power System

2013 ◽  
Vol 816-817 ◽  
pp. 1090-1093 ◽  
Author(s):  
Hai Bao ◽  
Xin Huang ◽  
Ling Wang ◽  
Gang Liu
Keyword(s):  
Power Flow ◽  
Reactive Power ◽  
Active Power ◽  
Electric Power System ◽  
New Method ◽  
Power Measurement ◽  
Power Flow Calculation ◽  
Flow Calculation ◽  
Measuring Accuracy ◽  
The Given

Owing to the given variables are measurable in online power flow calculation, the electrical variables of higher measuring accuracy should be chosen for calculation. Currently the theory of reactive power is deficient and several methods for reactive power measurement are briefly introduced in this paper. The inaccuracy of those methods is pointed out by the relevant references in non-sinusoidal conditions. The measuring accuracy of Active power directly obtained by voltage and current is the same as that of voltage and current. For increasing the accuracy of online power flow calculation, a method substituting voltage magnitude for reactive power is proposed in this paper. The new method eliminates the effects resulted from inaccurate reactive power measurement. The simulation results on software MATPOWER verify the correctness and rationality of the new method.

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