计算倾斜混输管道含气率和压力梯度的简单模型
A Simple Model for Calculating Gas-bearing Ratio and Pressure-gradient in Inclined Gas-Liquid Pipeline
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- DOI:
- 作者:
- 周艳杰1, 徐广军2, 池坤1, 朱蔡文3, 黄云虎4
ZHOU Yan-jie1, XU Guang-jun2, CHI Kun1
- 作者单位:
- 1. 西安长庆科技工程有限责任公司, 陕西 西安 710018;
2. 长庆油田分公司气田开发处, 陕西 西安 710018;
3. 白银中石油昆仑燃气有限公司, 甘肃 白银 730900;
4. 长庆油田分公司第一采气厂, 陕西 西安 710018
Xi'an Changqing Technology Engineering Co., Ltd., Xi'an 710018, China
- 关键词:
- 倾斜混输管道;段塞流;含气率;压力梯度;漂移流模型
inclined gas-liquid pipeline;slug flow;gas-bearing ratio;pressure-gradient;drift-flux model
- 摘要:
- 提出了一种基于漂移流模型的适用于倾斜管道和垂直管道的两相流模型。这个模型有别于其他模型(Ansari1994，Xiao1990，Zhang2003)用非线性方程求解整个系统压力梯度，而是用一个相对简单明确的方程来计算压力梯度，从而减少了计算时间。漂移流模型可以较精确地计算气泡流压力降，但是对于段塞流，一般都会低估含气率，从而导致高估了压力降；为了精确计算段塞流压力降，即使气泡含量少也需考虑，可用含气率表示气泡含量，它与压力降有密切关系。
A new model for two-phase flow in inclined or vertical pipeline is proposed on the basis of the drift-flux approach. The proposed model, unlike the other models that incorporate a system of nonlinear equations to solve pressure-gradient, uses a simpler explicit equation to solve pressure-gradient, thus reducing computation time significantly. The drift-flux approach can calculate the pressure drop of bubbly flow quite accurately. However, for slug flow, it usually underestimates the gas-bearing ratio, leading to the pressure drop being overestimated significantly. In order to get more precise result of slug flow pressure drop, even a small amount of gas bubbles in slug flow should be accounted for, it can be represented by the gas-bearing ratio that is closely related to pressure drop.2013,1(1): 9-11 收稿日期：2012-5-9DOI：10.3969/j.issn.1001-2206.2013.01.003作者简介：周艳杰（1985-），男，河南安阳人，工程师，2007年毕业于西南石油大学建筑环境与设备工程专业，现从事气田地面设计和研究工作。参考文献：
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