SBT,MAK-2,GR-DEN and acoustic log tools in china have .some shortcomings in evaluation of cementing bond quality, such as poor practicability and long time interpretation, etc.

• SBT、MAK-2、伽马密度测井仪和国产各种声波密度仪器在固井质量评价过程中存在着实用性差及处理解释时间长等缺陷。