please help guys by this probleeeeeeeeeem

[mohsen2396]

so we did PLT in this well. to perform this a pump truck was injecting gasoil in the well and we monitor the injection flow rate in well by spinner and temperature. so if we have a casing leakage this spinner should be alarmed us. when the pump truck start injection in well we start logging from depth 1200m . we observed from first down(plt) that flow rate is decreasing from depth 1700, temperature is decreasing by 4 degrees and density was increasing from 0.81g/cc to 0.9 g/cc. so we again do a run up for this interval. we observed this phenomena in depth 1820 m and we didn't see any change in previous depth(1700m). also we try several time again but we didn't observe any change in these intervals. stop check also gives the same amount in depth 1900m and 1600m.

so in your opinion how we can interpret this strange behavior???!! Is there any leakage in casing? it is necessary to note that we observed that spinner chenged across open hole but we couldn't calculate how much!

[barryn56]

Hi,
it sounds pretty straightforward - it simply shows that the contact in the well was moving, since you were filling the well with a lighter fluid and it had not yet reached equilibrium. You would need to send the files to do a proper analysis.

Regards,
Barry