How come ?!!

[jikzo]

Hi, the TDT log is normally run as a time lapse, but if this is the first run, you can compare the current saturation with the original open hole logs to determine how saturation has changed with production, and thus show this is a water encroachment/drive. You don't mention under what well conditions the TDT was run (flowing or shut in?). There is a possibility that the water is coning, if flowrates are high. The lower reservoir may be damaged, so you could try perforating. You say the water saturation is low in the open hole reservoir - is this result coming from the TDT? You need to make much higher wellbore corrections for open hole compared to cased hole for TDT, so be careful with the analysis.

Qw is almost 5000 stb/day , and Qo is almost 700 stb/day
so water flowrates are high !
but how can water conning affect the production ??