摘要
莘县地区广泛被新生代地层覆盖,并且厚度较大,在该区寻找地热资源,首先应查明热储层、盖层及断裂构造的特征。在本区CSAMT法对断裂构造具有很好的横向分辨能力,直流电测深对新生界地层具有较好的分辨效果。在收集有关地质、地震、测井等资料的基础上,通过利用直流电测深半定量的解释结果作为CSAMT定量解释的约束条件进行地质综合推断,基本查清了区内深部隐伏的地层、热储层、断裂构造的埋深及展布特征,取得了很好的勘查成果。综合应用两种物探方法对类似地区进行地热资源的前期勘查,可以高质、高效地取得勘探成果。
As Shenxian area is extensively covered by Cenozoic strata of rather great thickness, the prospecting for geothermal resources should find out the characteristics of thermal reservoir bed, cover bed and faulted structure. In this area, the CSAMT has a good trans-verse capability of distinguishing faulted structures, and the direct current electric sounding can yield fairly good result in distinguishing Cenozoic strata. Based on collecting relevant geological, seismic and logging data, the authors made geological integrated inference, with the direct current sounding semi-quantitative interpretation result as the constraint condition of the CSAMT quantitative interpreta-tion. As a result, the buried depth and distribution of the deep concealed strata, thermal reservoir beds and faulted structures were basi-cally detected, with good survey result obtained. It is held that the integrated application of two geophysical methods can yield results with high quality and high effectiveness in the early-stage exploration of geothermal resources.
出处
《物探与化探》
CAS
CSCD
2014年第3期461-464,共4页
Geophysical and Geochemical Exploration
基金
山东省国土资源厅地勘项目(鲁勘字[2009]030号)
关键词
综合物探
地热勘查
直流电测深
音频大地电磁测深
integrated geophysical exploration
geothermal exploration
direct current electric sounding
audio-frequency magnetotel-luric sounding
