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井中脉冲电磁法又称井中过渡场法,对寻找井旁和井底良导性的块状硫化矿有较好的效果。近几年来,加拿大、澳大利亚、苏联等国在仪器、室内模型试验等方面进行了许多研究,亚应用于野外生产,取得了明显的地质效果。为在我国引进这一先进技术,1981年我国购置了两套澳大利亚的西罗泰姆(SIROTEM)地面脉冲电磁仪。与该仪配套的井中脉冲电磁探头仪因损坏,未能使用。我院为开展脉冲电磁测井的研究与应用,首先利用我院研制成功的DMD—Ⅱ型地面脉冲电磁仪进行测井模型试验。为适应我国地质勘探发展需要,加大电法勘探深度,提高工程利用价值,1983年初冶金部给我们正式下达了井中脉冲电磁法,方法技术及井下探头仪的科研任务。JMD—Ⅰ型脉冲电磁探头仪于1983年10月研制成功。经近两年时间在安徽、江苏、河北等地15个钻孔试用,均取得了较好的地质效果。工作
In-well pulsed electromagnetic method, also known as in-well transitional field method, has a good effect on finding good conductivity of massive sulphide ore near the well. In recent years, Canada, Australia, the Soviet Union and other countries conducted many studies on instruments, indoor model tests and other aspects. Asia applied to field production and achieved obvious geological effects. In order to introduce this advanced technology in our country, in 1981 China purchased two sets of Australian SIROTEM ground pulse electromagnetic instrument. Well with the instrument supporting the pulse electromagnetic probe due to damage, can not be used. In order to carry out the research and application of pulse electromagnetic logging, our laboratory first used the DMD-Ⅱ ground pulse electromagnetic instrument developed by our institute to conduct logging model test. In order to meet the need of geological prospecting in our country, increase the depth of electric exploration and improve the value of engineering utilization, the Metallurgical Department formally issued the well-pulse electromagnetic method, method and scientific research task of downhole probe in early 1983. JMD-Ⅰ pulse electromagnetic probe instrument developed in October 1983. After nearly two years in Anhui, Jiangsu, Hebei and other places 15 drilling trial, have achieved good geological results. jobs