A new type of fiber Bragg grating based seismic geophone  

光栅Bragg地震检波器的传感特性研究(英文)

作　　者：陶果[1] 张向林 刘新茹 陈少华[1] 刘统玉[4] 

机构地区：[1]油气资源与探测国家重点实验室,光纤传感技术分实验室,中国石油大学(北京),102249 [2]中海油服技术中心机电研究所,燕郊101149 [3]渤海钻探大港测井公司,天津300280 [4]山东省科学院激光研究所,山东济南250014

出　　处：《Applied Geophysics》2009年第1期84-92,104,共10页应用地球物理（英文版）

基　　金：sponsored by the National 863 Program(Grant No.2006AA06Z207&2006AA06Z213);the National Natural Science Foundation of China(Grant No.50674098);the National 973 Program(Grant No.2007CB209601)

摘　　要：Aimed at the poor performance of conventional geophones in exploration for deeper and complex targets, we present the principle and theoretical design of a new geophone based on the optical fiber Bragg grating （FBG） sensing technology. The important parameters such as response functions are calculated theoretically. Because of the advantages of FBG sensing technology, the new FBG geophone has a high dynamic range of 94dB at （10-200 Hz）. This new generation of geophones will have wide use in seismic prospecting due to its higher sensitivity, lighter weight, and lower cost.针对目前石油地震勘探的瓶颈--检波器性能差的问题,设计了一种新型光纤Bragg光栅(FBG)地震检波器,阐述了其工作原理,并从理论上给出了检波器的响应函数等参数。由于FBG的传感优势,这种新型地震检波器动态范围可达94dB,灵敏度高,重量轻,造价低,是理想的新一代地震勘探信号采集单元。

关 键 词：oil exploration fiber optical sensor seismic data acquisition 

分 类 号：P631.4[天文地球—地质矿产勘探]