摘要
针对海上稠油油井出砂监测装置进行了研究,设计了一种室内稠油出砂监测实验系统,并研制了易于传感器感受出砂振动信号的一次仪表装置,研发了出砂信号采集分析系统。出砂监测过程中利用压电加速度传感器识别砂粒撞击一次仪表引发的高频振动信号,采用动态信号处理方法对出砂信号进行时域和频域分析等。在实验室条件下,进行了不同含砂量的稠油(黏度大于100 mPa.s)出砂监测实验,取得了非常好的效果。实验结果表明:在砂样粒度、携砂流速等固定的条件下,随着含砂量的增加,出砂振动信号的均方根值、功率谱幅值、方差值等信号特征值不断增大。
In this paper,based on the system for monitoring sand produced in offshore heave oil wells,a sensor highly sensitive to the vibration intensity of the grain impacting the sheet metal is designed,and also the way to collect these signals during the sand monitoring experiment. Using a piezoelectric acceleration sensor to tell the high-frequency vibration signal caused by the sand impact,and analyzing the sand signal in frequency domain and time domain by applying the signal processing. The experiment for different sand contents in the heave oil(the viscosity is higher than 100 mPas)is successful under the laboratory condition. The results show,if the grain size of sample and sand transport flow velocity are the same,and with the increase of sand content,the power spectrum amplitude,the root-mean-square value and the variance of sand monitoring signal increase as well.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2011年第4期139-143,200,共5页
Journal of Southwest Petroleum University(Science & Technology Edition)
基金
国家科技重大专项子课题(2008ZX05024–003–20)
关键词
稠油出砂监测
含砂量
高频振动信号
压电加速度传感器
monitoring sand in heave oil
sand content
high-frequency vibration signal
piezoelectric acceleration sensor
