摘要
针对传统阻抗式含水率计交流激励恒流源输出电流小、结构复杂的问题,提出一种采用双向脉冲激励恒流源的油井含水率检测新技术。该技术可有效避免直流激励下的介质电极化现象,提高含水率测量的精度和灵敏度。动态实验表明,新型测量仪具有良好的含水率分辨能力,当流量高于10 m3/d时,测量误差小于±3%。
Aiming at the problem of small output current and complex circuit of traditional AC excitation source used by impedance watercut meter. An oil-well watercut measuring method based on bidirectional pulse constant-current source is proposed. The electrode polarization effect in DC excited system is avoided, and the watercut measurement precision and sensitivity can be improved. The dynamic experiments show that the watercut measurement results of new system are reliability, and the measurement error is less than ＋ 3% when total of oil and water flow exceeds 10 m^3/d.
出处
《化工自动化及仪表》
CAS
2007年第2期73-75,共3页
Control and Instruments in Chemical Industry
关键词
双向脉冲恒流源
含水率
阻抗传感器
测量
bidirectional pulse constant-current source
watercut
impedance sensor
measurement
