Routine Data review

1. QC of DH Log data from TCGS & ELOG sonde collected@KLT001

2. TCGS SONDE LAYOUT

3. ELOG SONDE LAYOUT

4. 1. Depth: 14m (see the right-most column only) Slide 5: TCGS data – detects possible clay layer (high gamma count) @14m depth Slide 6: ELOG data – detects possible clay layer as well @14m depth

7. 2. Depth: 26m -34m Slide 8: Downhole TCGS data - Possible bad reading (high) due to bad contact in conductivity sensor Slide 9: Uphole TCGS data – Conductivity readings remain high, though that of downhole show low reading before bad contact occurs

8. Possible bad reading due to bad contact in conductivity sensor

10. TCGS SONDE LAYOUT Clay infiltrate sonde’s nose@25m causing bad contact resulting in bad conductivity reading

11. Conclusion: Both tools (TCGS&ELOG) basically provide a reliable gamma log data while that of TCGS’s conductivity is somewhat questionable from the depth of 25m downhole due to possible bad contact after clay infiltrate tool’s nose.