| Type | American epoxy phenolic coating (powder) |
| Color | Green |
| Thickness | 150–300 microns |
| Adhesion | Grade A |
| Roughness (Ra) | < 0.5 μm |
| Hardness | ≥ 7H |
| Corrosion resistance (sandblasting method) | ≥ 2.0 L/μm |
| High-temperature high-pressure test (pH=12.5, 148°C, 70MPa) | ≥ 24 hours, no blistering, no cracking, adhesion unchanged |
| Bending resistance | -30°C, 2.5° bend, no visible cracks |
| Recommended service temperature | ≤ 250°C |
| Pressure resistance | Meets tubing pressure limit |
| pH resistance range | pH 1–12.5 |
| Main application scope | Oil well drilling and completion |
WT300P is an epoxy-phenolic modified coating primarily designed for high-temperature, high-pressure drilling environments containing H₂, S₂, and CO₂. It delivers outstanding corrosion resistance across a wide temperature and pH range, is compatible with various mud systems, and extends drill string service life by 3-4 times. Its excellent low-friction properties enhance water circulation efficiency, reduce pumping pressure, and save 10%-25% of drilling power, thereby lowering energy consumption. The coating exhibits long durability and maintains integrity even after repeated use.
