探测井附近裂缝及其中流体性质的实验初探

A Preliminary Laboratory Experiment on Detection of Near borehole Fractures and their Fluid Properties.

周继宏．探测井附近裂缝及其中流体性质的实验初探．测井技术，１９９９，２３（１）：６～８在进行碳酸盐岩地层声波全波测井模型实验中，在井中接收到的声波全波列上折射纵波和折射横波之间观测到了来自模型外侧的较强反射波。在模型外侧介质为空气时反射波幅度比为水时的反射波幅度增大了１０％～２４％。此结果表明利用声波全波测井资料探测碳酸盐岩井附近裂缝及其中流体性质是可行的。

In the mock up experiment on full wavetrain acoustic logging in carbonate rock, strong reflected waves outside the mock up are observed between the refracted P wave arrivals and S wave arrivals on the full acoustic wavetrains received in the borehole. Amplitudes of the reflected wave with air outside the mock up are 10% 24% higher than those with water outside the mock up. The experimental results show that it is feasible to detect the near borehole fractures and their fluid properties in carbonate rock using full waveform sonic data.