基于文丘里管的蒸汽干度预测方法研究

Research of Steam Quality Prediction Method Based on Venturi Tube

油田热采中所用蒸汽的干度无法直接测量,但它的精确测量直接关系油田产量和经济效益。本文在均相流模型的基础上,考虑滑速比对干度的影响,并利用文丘里管的两相流测量原理,建立蒸汽干度的预测模型。经实验验证,该模型可以预测流经文丘里管的蒸汽干度,误差在8%以内,满足工程上的精度要求。

Steam quality used in oilfield thermal recovery cannot be directly measured,but its accurate measurement is directly related to oilfield production and economic benefits.In this paper,on the basis of the homogeneous flow model,considering the influence of the slip ratio on steam quality,and making use of two phase flow measurement principle of Venturi tube,the forecast model of the steam quality was established.Experimental results show that the model can predict the steam quality by Venturi tube,and the error is less than 8%,which can meet the engineering accuracy requirements.