高密度电法在岩溶勘查中的参数试验——以四川南部宜宾市长宁页岩气开发区为例

Parameter test of high density electrical method in Karst exploration:Take the changning shale gas development area in Yibin,southern Sichuan Province as an example

高密度电法是地球物理方法中运用非常广泛、典型的探勘方法,高密度电法是人工提供场源的直流电法,原理清晰、图像直观、信息量大、测量密度高,是一种分辨率较高的物探方法,本文结合高密度电法在四川南部宜宾市页岩气勘探区岩溶勘查中的实际运用效果,通过改变高密度电法作业中各个参数进行试验,最终总结了该区岩溶勘查的最优高密度电法施工参数,取得了较好的地质效果,为页岩气钻井修建过程中遇到岩溶等问题,提供可靠的地下地质信息,为岩溶防治工作提供可靠的科学手段。

High density electrical method is a very widely used and typical exploration method in geophysics.High density electrical method is a direct current electrical method which provides field source manually,with clear principle,intuitive image,large amount of information and high measurement density.It is a geophysical exploration method with high resolution.This paper combines the practical application of high density electrical method in the karst exploration of shale gas exploration area in Yibin City,southern Sichuan Province With the effect,through changing the parameters of high-density electrical method operation,the paper finally summarizes the optimal high-density electrical method construction parameters of karst exploration in this area,and obtains better geological effect,which provides reliable underground geological information and scientific means for Karst prevention and control.