Table 4 A fine division scheme of diagenetic stage of clastic reservoir.
From: Diagenetic evolution of the Oligocene Huagang Formation in Xihu sag, the East China Sea Shelf Basin
DS | Temperature (℃) | Ro% | I/S-S% | DS | Temperature (℃) | Ro% | I/S-S% |
|---|---|---|---|---|---|---|---|
DS1 | ≤ 25 | < 0.24 | > 99–100 | DS19 | > 110–115 | < 0.95–0.87 | > 27–31 |
DS2 | > 25–30 | < 0.26–0.24 | > 96–99 | DS20 | > 115–120 | < 1.03–0.95 | > 24–27 |
DS3 | > 30–35 | < 0.28–0.26 | > 94–96 | DS21 | > 120–125 | < 1.11–1.03 | > 21–24 |
DS4 | > 35–40 | < 0.30–0.28 | > 90–94 | DS22 | > 125–130 | < 1.18–1.11 | > 19–21 |
DS5 | > 40–45 | < 0.34–0.30 | > 87–90 | DS23 | > 130–135 | < 1.25–1.18 | > 16–19 |
DS6 | > 45–50 | < 0.35–0.34 | > 83–87 | DS24 | > 135–140 | < 1.31–1.25 | > 14–16 |
DS7 | > 50–55 | < 0.36–0.35 | > 78–83 | DS25 | > 140–145 | < 1.38–1.31 | > 13–14 |
DS8 | > 55–60 | < 0.37–0.36 | > 74–78 | DS26 | > 145–150 | < 1.45–1.38 | > 11–13 |
DS9 | > 60–65 | < 0.39–0.37 | > 69–74 | DS27 | > 150–155 | < 1.52–1.45 | > 10–11 |
DS10 | > 65–70 | < 0.40–0.39 | > 65–69 | DS28 | > 155–160 | < 1.61–1.52 | > 9–10 |
DS11 | > 70–75 | < 0.42–0.40 | > 60–65 | DS29 | > 160–165 | < 1.72–1.61 | > 8–9 |
DS12 | > 75–80 | < 0.45–0.42 | > 55–60 | DS30 | > 165–170 | < 1.86–1.72 | > 7–8 |
DS13 | > 80–85 | < 0.50–0.45 | > 51–55 | DS31 | > 170–175 | < 2.04–1.86 | > 6–7 |
DS14 | > 85–90 | < 0.56–0.50 | > 46–51 | DS32 | > 175–180 | < 2.27–2.04 | > 5–6 |
DS15 | > 90–95 | < 0.64–0.56 | > 42–46 | DS33 | > 180–185 | < 2.57–2.27 | > 4–5 |
DS16 | > 95–100 | < 0.71–0.64 | > 38–42 | DS34 | > 185–190 | < 2.96–2.57 | > 3–4 |
DS17 | > 100–105 | < 0.79–0.71 | > 34–38 | DS35 | > 190–195 | < 3.45–2.96 | > 1–3 |
DS18 | > 105–110 | < 0.87–0.79 | > 31–34 | DS36 | > 195–200 | 4.00–3.45 | 0–1 |
