筒式电容测试注汽井干度算法机理与实现

Algorithm Mechanism and Implementation of Applying Cylindrical Capacitance to Gas Injector Dryness Testing

为研究热采注汽井沿程蒸汽参数的变化规律,采用筒式电容方法精密测量注汽井蒸汽热力学参数,分析注汽井温度、压力和蒸汽干度随井深的变化特征。构建注汽井蒸汽干度测量模型,对蒸汽干度测量模型进行数值反演,考查蒸汽干度随介电常数的变化规律,揭示了干度值随井深的增大逐渐减小。

In order to investigate the variation of steam parameters along thermal extraction wells,the cylindrical capacitance method was applied to measure steam thermodynamic parameters precisely and to analyze steam injection well's temperature,pressure and steam dryness variation characteristics which changing with the well depth. Establishing a measurement model of steam dryness and then inverting it were implemented to investigate variation of the steam dryness changing with dielectric constant to show that the steam dryness can decrease gradually with the increasing of well depth.