Formation velocity 3000 m/s | Velocity error ±100 m/s | Velocity error ±200 m/s | Velocity error ±300 m/s | |
Before the drill bit 100 ms | 150 m | ±5 m | ±10 m | ±15 m |
Before the drill bit 200 ms | 300 m | ±10 m | ±20 m | ±30 m |
Before the drill bit 500 ms | 750 m | ±50 m | ±100 m | ±150 m |