光纤分布式地震波探测系统及其布设优化研究

应用光纤分布式声波检测与干涉探测技术,设计了一种用于油气勘探开发的光纤分布式地震波探测系统,并在埋地布设的基础上提出光缆附加尾椎的布设优化方案。野外现场测试结果表明,系统能够完整探测到地震波沿光缆的分布情况,波形特性与传统电子动圈传感器相似,埋地式布设最远探测距离20 m,尾椎式布设最远探测距离10 m,该研究为系统的实际应用提供了必要的理论和实验依据。

Study on distributed fiber seismic wave detection system and its layout optimization

In this paper, a new type of distributed fiber seismic wave detection system for oil and gas exploration was designed. And based on buried layout mode, the advanced practical layout optimization scheme of adding caudal vertebrae to optical cable was put forward. Field test results showed that the system could completely detect the distribution of seismic waves along the cable and the waveform characteristics were similar to those of traditional electronic dynamic sensors. The buried layout mode has the maximum detection distance of up to 20 m and the maximum distance of the caudal vertebral layout mode can reach 10 m. The research provides necessary theoretical and technical support for the extensive application and transformation of the new system.