测井技术2017，Vol.41Issue(1)：8-13,6.DOI:10.16489/j.issn.1004-1338.2017.01.002
低速同轴阵列电容法测量含水率的新理论模型
New Theoretic Model for Water Cut Measurement of Low Fluid Coaxial-array-capacitance Sensor
于宝 1于靖民 2孔垂广 3邢军3
作者信息
- 1. 东北石油大学地球科学学院,黑龙江大庆163318
- 2. 辽河油田公司兴隆台采油厂,辽宁盘锦124010
- 3. 中国石油集团测井有限公司,陕西西安710200
- 折叠
摘要
Abstract
When oil-water bubbles in lower speed passing though the annular space of a co-axial array capacitance water cut sensor,it will increase and decrease the thickness of detention layer covering on the inner electrode.According to this mechanism and some assumption,a new theoretical model of detection water cut is established,it shows the complex log relationships between the output signal frequency and water cut of a co-axial array capacitance water cut sensor,sometime,it is related with the fluid flow,viscosity,temperature,material of the isolation layer on inner electrode and conformation of the capacitor.The performance experiment of a co-axial array capacitance water cut sensor and the calculation by model under experimental condition shows that in the case of the water cut beyond 50％,the absolute error is negligible and the standard error is 1.4％.It shows that the increase or decrease of the oil detention layer thickness on inner electrode obeys the exponent rule,and the water cut model founded is more practicable in high water cut.关键词
生产测井/油水两相流/含水率/同轴电容传感器/测量模型Key words
production logging/oil-water two-phase flow/water cut/co-axial capacitance transducer/measurement model分类
天文与地球科学引用本文复制引用
于宝,于靖民,孔垂广,邢军..低速同轴阵列电容法测量含水率的新理论模型[J].测井技术,2017,41(1):8-13,6.
