| Answer | Crossword Clue |
|---|---|
| CATHEAD | Winch on an oil-well rig |
| DRILLINSTRUCTOR | Teacher on an oil rig? |
| OFFSHORE | Not on land, as an oil rig |
| ENER | Cabinet dept. with an oil rig on its seal |
| CAP | Seal, as an oil well |
| CAPS | Closes up, as an oil well |
| RIG | Equipment for drilling an oil well. |
