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为了探测远离井眼几十米、几百米以至几千米以上的矿体,本文提出了有效的测井方法,并用一特例推导出理论公式,计算出异常强度。为了增强异常幅度和获取可靠的异常值,提出了相应的技术措施。在分析测井曲线特征值与矿体参数关系的基础上,制作出定量解释图版,可以求得矿体的位置、大小和电阻率。最后讨论了应用条件和范围,并对本方法探测远离井眼矿体的可能性作出了结论。
In order to detect the orebodies that are several tens of meters away from the wellbore and several hundred meters or more, this paper presents an effective logging method and deduces the theoretical formula with a special case to calculate the abnormal intensity. In order to enhance the magnitude of anomalies and obtain reliable outliers, corresponding technical measures are put forward. Based on the analysis of the relationship between the eigenvalues of logging curves and the parameters of ore bodies, a quantitative interpretation chart is produced, and the position, size and resistivity of the ore body can be obtained. Finally, the conditions and scope of the application are discussed, and the conclusion is drawn that the method can detect the possibility of being far away from the borehole ore body.