地面电磁探测接收系统批量对比试验

Field tests of the Surface Electromagnetic Prospecting System

已经将自主研制的地面电磁探测(SEP)系统与国内外商业仪器系统进行了全面的对比试验,结果表明自主研制的仪器系统整体性能与国外先进仪器系统性能相当,并在某些性能上略有优势。为测试批量生产的SEP采集系统(包括电磁法采集站和感应式磁传感器)的一致性、稳定性与可靠性,精心设计对比实验方法并在河北张北县进行了大规模的对比试验,分别采集了天然电磁场和人工电磁场数据,通过多种情况的对比,证明批量采集站与感应式磁传感器性能稳定,所采集的天然场和人工场视电阻率结果一致,各项误差均在合理范围内。证明SEP系统能够为深部矿产资源和深部油气资源的勘探提供高质量的数据,也为批量仪器测试提供了设计方案。

The Surface Electromagnetic Prospecting(SEP)System developed by ourselves have already been tested in China and abroad.The test comparison with other similar field instruments was carried out.Test results show that the SEP System has similar specifications with the other instruments,and some performances are even better.In order to test the consistency,stability and reliability of the SEP System(including electric receiver stations and magnetic sensors),well-designed batch comparison tests have been conducted in Zhangbei,Hebei.In the tests the SEP System received natural source electromagnetic data and controlled source electromagnetic data.The apparent resistivity of the natural source field and the controlled source field are consistent,and the errors are within a reasonable tolerance.The comparison of a large amount of data proves both the receiver stations and the magnetic sensors have reliable and stable performances.Our practice proves the effectiveness of our comparison test approach,and the test resultsshow that the SEP System can acquire high-quality electromagnetic data for the deep hydrocarbon and other mineral resource exploration.