ESP Model Implementation and Result Analysis Under Gas/Liquid Flow Conditions

2005 ◽  
Author(s):  
Datong Sun ◽  
Mauricio Gargaglione Prado
Keyword(s):  
Liquid Flow ◽  
Flow Conditions ◽  
Gas Liquid Flow ◽  
Result Analysis

Experiment Study of Pigging Characteristics in Horizontal Gas-Liquid Flow Pipeline With Different Pig Sizes

2012 ◽  
Author(s):  
Ruixi Duan ◽  
Da Yu ◽  
Haihao Wu ◽  
Jing Gong ◽  
Shanwei Hu ◽  
...  
Keyword(s):  
Water Flow ◽  
Liquid Flow ◽  
Pipe Wall ◽  
Flow Conditions ◽  
Experiment Study ◽  
Liquid Holdup ◽  
Long Distance ◽  
Inner Diameter ◽  
Gas Liquid Flow ◽  
The Relationship

During pigging process of long-distance pipeline, pig seals wear due to abrasion on pipe wall, the diameter of seal decreases and even to be smaller than pipe inner diameter as a result. This study has researched the characteristics of pigging processes using pigs different in diameter in horizontal experimental pipe. In the study, mandrel pig with two seals was chosen for experiment. Five pigs different in size were used, and pigging experiments under various flow conditions were carried out in a horizontal air-water flow experimental loop. During experiment, the features of pigging process from pig launcher to trap were observed, the liquid holdup and pressure were detected and collected, pig velocities in different sections of pipe were measured, the velocity of pigging slug front and length of the slug were also measured. The relationship between pig movement and flow conditions was analyzed, the methods to calculate velocity of pigging slug front and length of the slug were obtained and the results calculated were similar to the results measured. Based on the results of experiment, some suggestions were proposed for pigging operation in real pipeline.

Continuous Wavelet Transforms of Instantaneous Wall Pressure in Slug and Churn Upward Gas-Liquid Flow

2002 ◽  
Vol 124 (3) ◽  
pp. 625-633 ◽  
Author(s):  
Heather L. McClusky ◽  
Mary V. Holloway ◽  
Donald E. Beasley ◽  
Jay M. Ochterbeck
Keyword(s):  
Liquid Flow ◽  
Wavelet Transforms ◽  
Slug Flow ◽  
Time Dependent ◽  
Continuous Wavelet ◽  
Frequency Content ◽  
Flow Conditions ◽  
Continuous Wavelet Transforms ◽  
Gas Liquid Flow ◽  
Churn Flow

Continuous wavelet transforms are employed to determine the time-localized frequency content (scalogram) of instantaneous wall pressure signals in upward gas-liquid flow. The flow conditions correspond to well-defined slug flow, well-defined churn flow, and flows near the transition from slug-to-churn flow. Scalograms demonstrate that the frequency content of the pressure signals is time-dependent, and visual observations of the flow conditions suggest that the time-dependent frequencies are related to identifiable physical behaviors of the flow. In well-defined slug flow, the scalograms are characterized by the presence of a dominant frequency throughout the duration of the signal and by frequency shifting events. Scalograms representing well-defined churn flow contain intermittent frequencies, and the energy density in churn flow is spread over a wider range of frequencies than in slug flow. The present results provide evidence that flows near transition alternately display characteristics of both well-defined slug and well-defined churn flows.

Vortex Precession in a Gas-Liquid Flow

2010 ◽  
Vol 41 (4) ◽  
pp. 465-478 ◽  
Author(s):  
S. I. Shtork ◽  
Sergei Alekseenko ◽  
V. L. Okulov ◽  
P. A. Kuibin
Keyword(s):  
Liquid Flow ◽  
Vortex Precession ◽  
Gas Liquid Flow
Sign in / Sign up

Export Citation Format

Share Document