Heavy duty drill pipes on a pipe rack for drilling an oil well in Utah, USA. The spiral grooves help clean the hole as it's drilled. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Jon G. Fuller, VW PICS |
Taille de l’image : | 6000 px × 4000 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |