针对非常规油气开采微地震监测检波器高频检测的要求, 提出了一种基于弹性薄壁管的FBG(光纤布拉格光栅)高频微地震检波器, 理论分析了该检波器的实验模型, 并对检波器的幅频特性和加速度灵敏度进行了实验研究。实验结果表明: 基于弹性薄壁管的FBG高频微地震检波器的固有频率为1 680 Hz；在50～1 200 Hz工作频率范围内, 加速度与波长有很好的线性关系, 线性拟合度为0.998 4, 加速度响应灵敏度为4.393 2 pm/G, 实验值与理论值的相对误差为0.15%。

In non-conventional oil and gas exploitation field, micro-seismic monitoring technology requireshigh resonant frequency micro-seismic sensor. In this paper, a Fiber Bragg Grating(FBG) micro-seismic geophone with high resonant frequency based on elastic light-walls tube is proposed. The mechanical model, the amplitude-frequency and the sensitivity of the geophone are theoretically analyzed and experimentally measured. Experimental results show that the resonant frequency is 1 680 Hz.In the operating range of 50～1 200 Hz, the linear fitting degree is 0.998 4 and the acceleration sensitivity is 4.393 2 pm/G. The relative error is 0.15% between the experimental result and theoretical analysis.