YKZ-480仪器50Hz交流感应的抑制方法研究

随着地震勘探技术的发展,高分辩率勘探在大庆地区不断地扩大,要达到真正意义上的高分辩率勘探,只有提高野外勘探采集的质量。影响野外原始地震资料的因素有许多,50Hz交流感应就是其中主要的因素之一。采用检波器下井埋置虽然能抑制野外环境的噪声干扰,但却无法去掉50Hz交流感应。我公司有6套由西安仪器厂生产的YKZ-480仪器。在去冬今春区块的施工过程中,这6套仪器的50Hz交流感应都相当严重,若不采取相应的措施,则会影响野外原始地震资料的质量,大大降低地震资料的经济价值,为此,我们开展了对这种仪器抑制50Hz交流感应方法的研究攻关,并取得了较为明显的效果。

Research on Inhibition of 50 Hz AC Induction of YKZ-480

With the development of seismic exploration technology, high-resolution exploration has been extend-ed continuously in Daqing area. In fact, only is the real high-resolution exploration, can the quality of field data acquisition be improved. And 50 Hz AC induction is one of the most important factors which affects the field original seismic data. Although field environmental noise can be eliminated by planting geophones in the well, 50 Hz AC induction will not be eliminated. All of our 6 sets YKZ-480 produced by Xi'an Petroleum Exploration Instrument Complex have serious problem of 50Hz AC induction during the opera-tion periods of this spring and last winter. If suitable measures are not adopted, the quality of original seis-mic data will be decreased so as to reduce the economic results. Therefore, we have begun with the re-search on the 50 Hz AC induction rejection and obtained some obvious results.