oil string
noun
The innermost casing (tubing) in an oil well, extending down to the oil-producing rock.
Origin
1920s.
- surface density
- surface effect
- surface energy
- surface film
- surface find
- surface friction
- surface gage
- surface gauge
- surface grammar
- surface grinder
- surface-grinding machine
- surface grub
- surface-harden
- surface-hardened
- surface hardening
- surface integral
- surfaceless
- surfacely
- surface mail
- surfaceman
- surface-mount
- surface-mounted
- surface noise
- surface paper
- surface physics