基于地震测井的声速曲线校正

本文分析了地震测井时间与井孔声速测井积分时间之间的差异，以此作出声速校正偏差曲线。通过对它的解释，提出了相应的校正方法，重点讨论了对右手偏差时速度依赖校正方法，同时给出了评价校正方法的标准。利用该方法对南海某井的实际资料进行了校正处理。

Sonic Velocity Curve Correction with VSP Data

Discrepancies between seismic check-shot time and borehole sonic velocity integrated time have been analysed in this paper, on the basis of which the sonic velocity correction drift curve is created and a corresponding correction method is proposed. Hightlight is on the velocity dependent correction method for right-hand drift (i. e. the recorded velocity is too low). The appraisal criterion for the correction method is also given. Actual data from the South Sea has been corrected with the method proposed. The result shows that the correction is indispensable, and that the quality of the corrected data is up to the mark.