对声波测井井眼补偿作用的进一步证明及探讨

K)]Further Proving and Studying of Borehole Correction about Acoustic Velocity Logging

井眼无规则的变化,严重影响声波时差测量的可靠性,给声速测井资料的应用带来严重的偏差。为了更好的消除由于井径扩径引起的声波时差异常,目前通常采用双发双收井眼补偿法。本文分析了这种方法的补偿原理,进一步证明了井眼扩径对声波时差的影响,评述及展望了声速测井井眼补偿作用的前景。

The caliper＇s ruleless movement has a serious impact on the reliability of the acoustical slowness in the borehole, which causes serious deviate in acoustic velocity logging application.. In order to eliminate the abnormal slowness induced by the caliper which is enlarged, the compensation acoustic velocity logging method is used presently. In this paper , the compensation principle is studied , then the impact induced by caliper expanding is further proved, and the borehole compensation effect is prospected.