浅析大地电磁频谱方法探测昆明地热的效果

大地电磁频谱方法是省、部级“八五”科技攻关课题的研究成果，该方法已开发有岩性探测、油气直接检测、水资料探测、地热预测等功能。１９９６年运用该方法预测昆明地热，已完成的６口井证实了预测的实用性。该方法能够在钻探前较准确预测到地热层，给地铁水勘探开发部署提供了依据。研究认为，该方法探测昆明地热水主要是由于昆明地热水富含铁质，铁质引起的地磁场在电磁频谱上有突出响应。

AN ANALYSIS OF THE EFFECT OF USING MAGNETOTELLURIC SPECTRUM TO SOUND GEOTHERM OF KUNMING BASIN

The method of magnetelluric spectrum is a researching result of the provincial and ministric eighth five year scientific technological key project. It has the developed functions of lithologic identification, direct hydrocarbon detection, water resourecs survey and geothermal sounding, etc. In using this method to sound the geotherm of Kunming basin in 1996, six wells were completed, which shows it to be applicable. This method can accurately forecast geothermal reservoirs before drilling, providing the basis for geothermal exploration and development. It is successful in sounding the geotherm of Kunming due to the geothermal water rich in Fe, resulting in the manifest expression of geomagnetic field in magnetotelluric spectrum.ve methods is not only able to identify fault, but also able to study features of fault and get some results.