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根据放射性測井曲綫划分岩层界面的方法是:当井下仪器向上移动时,曲綫异常的上升点是岩层底界,下降点是岩层頂界,考虑到測量仪器时问常数的影响,曲綫异常的深度位置和岩层实际存在情况是下一致的,經驗証明需做30—40厘米的校正,亦即当仪器向上移动时,异常位置比岩层实际位置低30—40厘米(参看图9)。
The method of dividing the rock formation interface according to the radioactive logging curve is as follows: when the downhole instrument moves upward, the ascending point of the curve anomaly is the bottom of the rock formation and the descending point is the top of the rock formation. Considering the influence of the time constant of the measuring instrument, The exact location and formation are consistent, and experience has shown that a correction of 30-40 centimeters is required. That is, when the instrument is moved upwards, the anomaly is 30-40 cm below the actual position of the formation (see Figure 9).