On the Online Calibration of Drilling Fluid Rheological Parameters Using EMD and MLE
IEEE sensors journal(2023)
摘要
Drilling fluid rheology is critical for maintaining wellbore stability and controlling bottom-hole pressure. Currently, manual methods such as rotational viscometers are used on drilling sites despite their susceptibility to human error. Existing tube viscometer online measurement devices suffer from poor measurement accuracy and stability due to factors like mud diaphragm pump pulsation, motor vibration, and pressure difference bias errors. To address these challenges, this article proposes an online calibration method based on empirical mode decomposition (EMD) and maximum likelihood estimation (MLE) using a double-tube differential pressure tube viscometer. First, the EMD model uses measured differential pressure sensor data to extract and eliminate interference signals. Next, a maximum likelihood model calibrates the drilling fluid parameters. Finally, an experimental platform was built for real-time monitoring of drilling fluid performance. Results indicate that calibrated apparent viscosity, plastic viscosity, and dynamic shear force show better precision with relative errors less than 5% compared to uncalibrated parameters.
更多查看译文
关键词
Fluids,Drilling,Pressure measurement,Fluid flow measurement,Viscosity,Electron tubes,Sensors,Double straight pipe differential pressure measurement,empirical mode decomposition (EMD),maximum likelihood estimation (MLE),on-line measurement of drilling fluid rheology,rheology curve calibration
AI 理解论文
溯源树
样例
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要