基于布里渊散射的全井段分布式智能油气井参数光纤传感研究

项目名称： 基于布里渊散射的全井段分布式智能油气井参数光纤传感研究

项目编号： No.41474116

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 地球物理学和空间物理学

项目作者： 刘迪仁

作者单位： 长江大学

项目金额： 20万元

中文摘要： 以油气井监测的信息化和智能化发展要求为前景目标，基于布里渊散射非线性效应和光时域反射计技术，研究并建立连续全井段分布式高温高压智能油气井参数光纤传感器测量系统。采用理论分析、数值模拟和实验相结合，重点研究高温高压油气井中普通和增敏性特殊光纤的布里渊散射特性、布里渊散射谱与高温高压油井参数的调制解调关系、微弱信号检测技术精度提高、适应于油气井永久性全分布式测量的增敏性特种光纤的制备方法、系统空间分辨率提高以及多参数交叉敏感性等难点和关键技术问题，实现该传感器系统对油气井温度和压力等参数的全井段连续分布式模拟实验测量，为该项新技术应用于未来油田的信息化和智能化奠定基础。

中文关键词： 布里渊散射；分布式；光纤传感；油气井；高温高压

英文摘要： In order to realize intelligent parameter monitoring and information management of oil well in the future, The project will research on the fully and continuously distributed optical fiber sensing system for parameter monitoring of high temperature and high pressure oil wells based on Brillouin scattering and optical time domain reflectometry. By theoretical analysis, numerical simulation and experiment the study will be focused on some key techniques and challenges such as feature of Brillouin scattering of general and special optic fibers in high temperature and high pressure oil wells, the relationships of modulation and demodulation between the Brillouin spectrum and the parameters of high temperature and high pressure oil wells, improvement for weak signal detection accuracy, preparation method of special enhanced sensitivity optical fiber for permanent distributed measurement in oil wells, improvement for system spatial resolution and multiple parameter cross sensitivity and so on, and on implementation of fully borehole distributed experimental measurement of temperature and pressure with this system, which will lay the foundations for the intelligent parameter monitoring and information management of oil well in the future.

英文关键词： Brillouin scattering；distributed；optical fiber sensing；oil and gas well；high temperature and high pressure.