论文信息 - Numerical Analysis of Heavy Oil-Water Flow and Leak Detection in Vertical Pipeline

Numerical Analysis of Heavy Oil-Water Flow and Leak Detection in Vertical Pipeline

Pipeline is a conventional, efficient and economic way for oil transportations. The use of a good system for detecting and locating leaks in pipeline contribute significantly to operational safety and cost saving in petroleum industry. This paper aims to study the heavy oil-water flow in vertical ducts including leakage. A transient numerical analysis, using the ANSYS-CFX? 11.0 commercial software is performed. The mathematical modeling considers the effect of drag and gravitational forces between the phases and turbulent flow. Mass flow rate of the phases in the leaking orifice, the pressure drop as a function of the time and the velocity distributions are presented and discussed. We can conclude that volumetric fraction of phases and fluid mixture velocity affect pressure drop and mass flow rate at the leak hole.

[1] Hao Ye,et al. Leak detection in pipelines based on PCA , 2004, ICARCV 2004 8th Control, Automation, Robotics and Vision Conference, 2004..

[2] Senchun Chai,et al. Leak detection and localization of gas pipeline system based on wavelet analysis , 2011, 2011 2nd International Conference on Intelligent Control and Information Processing.

[3] Cristina Verde. Multi-leak detection and isolation in fluid pipelines , 2001 .

[4] Yingxiang Wu,et al. Investigations of phase inversion and frictional pressure gradients in upward and downward oil–water flow in vertical pipes , 2010 .

[5] Henrique Ventura da Silva,et al. Leak detection in petroleum pipelines using a fuzzy system , 2005 .

[6] Seung Ihl Kam,et al. Mechanistic modeling of pipeline leak detection at fixed inlet rate , 2010 .

[7] Yuanyuan Fan,et al. A Pipeline Leakage Detection Technology based on Wavelet Transform Theory , 2006, 2006 IEEE International Conference on Information Acquisition.