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Contact angles of core slices before and after treatment with fluorescent nano displacement agent.
| Oil reservoir block | Oil-displacing agent | Core contact angle (°) | |
|---|---|---|---|
| Before treatment | After treatment | ||
| T123 | Fluorescent nano oil displacement agent | 127.3 | 115.9 |
| H34 | 125.4 | 112.4 | |
| TH12W | 117.6 | 103.2 | |
| TY762 | 113.8 | 105.7 | |
