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Table 4 Th/K and Th/U ratio of SGR log for well (B and C)

From: Determination of clay minerals using gamma ray spectroscopy for the Zubair Formation in Southern Iraq

Well Units SGR CGR K % Th ppm U ppm Th/K Th/U U/K
B North H3 35.4–105.02 22.24–81.56 0.20–1.76 5.90–15.94 0.96–3.40 7.81–35.41 3.69–8.52 1.19–7.63
H2 11.84–139.07 10.35–92.02 0.13–1.13 1.63–22.89 0.15–5.53 5.32–29.16 2.55–5.36 0.53–7.23
H1 16.40–116.49 11.88–93.76 0.16–1.08 2.70–23.76 0.37–5.05 12.17–41.92 2.61–8.34 1.66–11.56
C South H3 26.77–114.08 18.84–80.90 0.48–1.97 3.14–17.43 0.64–3.44 4.58–13.43 1.74–11.68 0.72–4.72
H2 19.41–116.32 11.48–58.74 0.42–0.96 1.27–14.70 0.46–5.34 2.12–19.22 1.11–5.63 0.72–6.97
H1 18.11–99.23 15.67–52.83 0.21–0.87 2.05–12.34 0.38–4.78 3.45–37.86 1.49–6.50 0.50–20.83