| 电磁流量测井原理及应用 |
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| 引用本文： | 安臻.电磁流量测井原理及应用[J].物探与化探,2014(1):106-108. |
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| 作者姓名： | 安臻 |
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| 作者单位： | 内蒙古自治区煤田地质局153勘探队,内蒙古呼和浩特010010 |
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| 摘 要： | 全面地介绍了电磁流量测井的基本原理、测量方法、数据采集方式、资料整理及解释方法等,有助于详细了解电磁流量测井仪器及其实际应用。水文地质勘探混合抽(注)水试验时,进行电磁流量测井,可获得分层抽(注)水所能得到的资料。电磁流量测井实质是测量流速的感应数据,分为自然静态静止水位和抽(注)水动态静止水位测量,测量方式有连续测量和点测。定性、定深、定厚解释原则为:在仪器基底值的基础上,幅值增加为涌水层,减小为吸水层,不变为隔水层;曲线变化之拐点是界面反映,由其确定深度、厚度。进行水量计算时,先在孔中测定仪器灵敏度,通过含水层顶板的反映值得到速度值,再由井径计算钻孔过水截面积,由此计算水量。
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| 关 键 词： | 电磁流量测井 水文地质勘探 含水层 静止水位 水量计算 |
THE APPLICATION OF THE ELECTROMAGNETIC FLOW RATE LOGGING |
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| AN Zhen.THE APPLICATION OF THE ELECTROMAGNETIC FLOW RATE LOGGING[J].Geophysical and Geochemical Exploration,2014(1):106-108. |
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| Authors: | AN Zhen |
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| Institution: | AN Zhen (No. 153 Exploration Party, Inner Mongolia Bureau of Coal Geology, Hohhot 010010, China) |
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| Abstract: | The basic principle, measuring method, data acquisition way and data processing and interpretation method are described comprehensively in this paper, which helps understand in detail the practical application of the electromagnetic flow rate logging instru-ment. During the mixed pumping （ injection） test in hydrogeological exploration, the performance of the electromagnetic flow rate log-ging can acquire the data obtained by stratified pumping （ injection） . The essence of the electromagnetic flow rate logging lies in meas-uring the induction data of the flow velocity, which can be divided into the natural static state standing water level measurement and the pumping （ injection） dynamic standing water level measurement, and the measurement ways include continuous measurement and point measurement. The principles of qualified, depth-determining and thickness-determining interpretation are as follows： On the basis of the base value of the instrument, the increase of the amplitude indicates the water gushing bed, the decrease of the amplitude signifies the water absorbing bed, and the invariant amplitude means the confining bed;the inflection point of the curve variation is the reflec-tion of the interface and determines the depth and thickness. During the calculation of the water yield, we should first determine the sensitivity of the instrument in the hole, obtain the velocity value through the reflection value of the aquifer roof, and calculate the wa-ter-carrying sectional area of the water drill hole, so as to compute the water yield. |
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| Keywords: | electromagnetic flow rate logging hydrogeological exploration aquifer standing water level water yield calculation |
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