对双检检波器反序故障的分析与探讨

Troubleshooting for the inverted sequence fault of dual sensors

双检检波器是OBC(海底电缆)上配套用的一种地震勘探传感器,它将高灵敏度的磁电检波器和海洋压电检波器合二为一,即把陆检检波器和水检检波器两种接收装置结合在一起。此双检检波器大大提高了地震采集资料的优良品率,并能够较好地压制虚反射和海水鸣振。但是408ULS的双检采集系统经常会出现反序的现象,本文通过对双检检波器反序故障的分析,找出了应对双检检波器反序故障的实际方法。

Dual sensors, a type of seismic sensor attached to the OBC, combines highly sensitive seismic geophone and marine piezoelectric detectors, which means integrating terrestrial detectors with marine detectors. It has obviously advantages, for example, double-check detectors can immensely improve the acceptance rate of seismic acquisition data and greatly suppress seismic ghost reflection and seawater vibration reflex. However, inverted sequence often occurs when using the 408ULS double-check detector system. Taking the circumstance into consideration, this pa- per analyzes the inverted sequence fault of double-check detectors, and present an effective solution which can be re- ferred by seismic exploration instrument operators.