De quoi est fait oil well
A well for extracting oil; drilling at Absheron and by Drake.
- Steel well casing — a pour partie. Steel pipes line the borehole.
- Tubing string — a pour partie. Oil rises through them.
- Christmas tree valve assembly — a pour partie. Valves at the wellhead.
- Oil pumpjack — a pour partie. It drives the sucker-rod pump.
- Derrick — utilise. A well is drilled by a rig.
- Wrought iron — est fait de. The casing pipes are iron.