| |||
| mud bit | |||
| diamond point bit | |||
| center bit; diamond bit; diamond-point bit; spud bit | |||
| spade | |||
| pointed bit; pick chisel | |||
|
пикообразное долото : 15 a las frases, 5 temas |
| Campos de petróleo | 3 |
| Petróleo | 8 |
| Petróleo y gas | 2 |
| Sajalín | 1 |
| Tecnología de petróleo y gas | 1 |