| Lost circulation materials | Content (%) | Blocking remover | Dissolution ratio (%) |
|---|---|---|---|
| Platelike resin (softening point: 140-165°C) | 30 | Crude oil | 98.6 |
| Asphalt (softening point: 140-165°C) | 30 | Crude oil | 99.2 |
| Asphalt (softening point: 190-230°C) | 30 | Crude oil | 96.7 |
| Fiber JDF (15 mm long) | 5 | 10 wt %HCl | 51.43 |
| Fiber DL-93 (fine) | 5 | 10 wt %HCl | 86.3 |
| Calcium carbonate superfine powder | 4 | 10 wt %HCl | 99.6 |