Research Article
Research on Rapid Identification and Evaluation Technology for Gas Formation during Underbalanced Drilling
Table 3
Conventional well logs interpretation results for PL113 well intervals.
| MD
(m) | Natural gamma ray
(API) | Sonic log
(us/ft) | Neutron log
(P.U) | Density log
(g/cm3) | Deep lateral log
(ohm·m) | Shallow lateral log
(ohm·m) | Water saturation
(%) | Interpreted result |
| | 2564.3–2568.6 | 45–114 | 59.1–67.9 | 7.6–10.1 | 2.52–2.66 | 23–38 | 23–38 | 31–49 | Poor gas zone | | 2580.6–2584.5 | 43–83 | 59.5–67.5 | 7.2–13.7 | 2.37–2.58 | 18–37 | 16–35 | 31–47 | Poor gas zone | | 2612.7–2618.1 | 44–86 | 59.0–66.5 | 9.2–12.8 | 2.47–2.62 | 16–22 | 15–23 | 59–88 | Gas-water zone |
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