KSG007 gamma log_diff

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As a mean of discussion on integrity of collected ELOG data at water-well KSG007.

As a mean of discussion on integrity of collected ELOG data at water-well KSG007.

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  • 1. ISSUES: Integrity of Gamma log
    • ONWater’s Jens H.P. Norgaard has doubt on the gamma log collected @KSG007
    • The doubtful depth is between 20 to 30m where there’s low reading and a high kick
    • A rerun has been requested by ONWater without clear justification
    • This PPT is a mean of discussion on the above issue
  • 2. Gamma Log from TCGS & ELOG sonde collected@KSG007 and KSG008
  • 3. TCGS SONDE LAYOUT
  • 4. ELOG SONDE LAYOUT
  • 5. 1. Depth: 20 -30m (see the right-most column only) Slide 6:Gamma log from TCGS sonde Slide 7: Gamma log from ELOG sonde
  • 6.  
  • 7.  
  • 8. Gamma log data from KSG008 which is approx. 1.9km north of KSG007 is being compared to show a possible geology similarity between them.
  • 9.  
  • 10. Data from KSG008 2. Depth: 13 -23m (see the right-most column only) Slide 11:Gamma log from TCGS sonde Slide 12: Gamma log from ELOG sonde
  • 11.  
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  • 13.
    • Conclusion: Both tools basically provide a reliable gamma log data. The anomaly observed is possibly that of the subsurface and not of that of the tool and operators. A rerun wouldn’t be necessary here.