【摘要】 介绍在上海进行地震测井遇到的“越叠加，地震记录质量越下降”的问题而采用逐步降低电火花充电电压的办法。该方法在很大程度上提高了地震记录质量，满足了工程上的需要。还介绍了能克服上述问题的其它两种简易可行的办法。更多还原

【Abstract】 Aimed at solving the problem of "the more the superimpostion,the lower the quality of seismic record" which was encountered during the seismic logging in Shanghai,the author used the method of gradual reduction of electrospark charging vaotage, which greatly raised the quality of seismic record and thus met the engineering demand.This paper also recommends two easy and practicable methods for overcoming the trouble.更多还原