| 本文已被：浏览次 下载次 |
码上扫一扫！ |
|
|
|
| Sand content monitoring method of heave oil wells based on high frequency vibration signal analysis |
|
LIU Gang1, JIA Zong wen1, LIU Zhi guo2, HE Bao sheng3
|
|
(1.College of Petroleum Engineering in China University of Petroleum, Qingdao 266555, China;2.College of Nuclear Science and Technology in Beijing Normal University, Beijing 100875, China;3.Research Centre of CNOOC, Beijing 100027, China)
|
| Abstract: |
| A system was designed to monitor sand production continuously and effectively for the increasing sand production problem during oil exploitation. In this system, the high frequency vibration signal caused by sand impact was monitored by an acceleration sensor. The signal processing procedure was compiled, and the sand impact signals with time domain and frequency domain characteristics were analyzed under different experimental conditions. The experiment under different sand contents with heave oil(the viscosity is about 130 mPa·s) was conducted. The results show that, with the increase of sand content, the power spectrum amplitude, the root mean square value and the variance of sand monitoring signal increase lineally as well. And the result proves that the system can monitor the variation of sand content effectively. |
| Key words: heave oil sand content high frequency vibration signal singal monitoring time domain analysis frequency domain analysis |
|
|