电测井和电阻法在复杂区表层调查中的应用

利用电测井方法研究表层的自然电位、电阻率与岩性、含水量调查等之间的关系，精确分析表层岩性特征，为激发因素的合理选择和资料处理提供了新的分析依据；利用单点的电测井资料拟合自然电位和电阻率的关系曲线，把高密度电阻率法的电阻率剖面反演成为自然电位剖面，分析自然电位的纵横向变化规律；利用速度模型反演技术，准确地描述了表层速度和厚度的纵横向变化细节，弥补了微测井单点调查的不足。

Application of electric logging and resistivity method in surface survey in complex areas

We use electrical logging technique to study the relation between self-potential values, resistivity, lithol-ogy, and water content. The relation is used as the base for the selection of shot factors and data processing methods. We fit a curve of self-potential values versus resistivity with electrical logging data, and then between high-density resistivity data into self-potenlial section. The result is used to study variability of self-potential values in vertical and horizontal directions. Inversion of surface model can depict the details of surface velocity and thickness, and makes up the shortcomings of uphole data.