| 213112 |
Cleaning out (e.g., bailing out, steam cleaning, swabbing) wells on a contract basis |
| 213112 |
Cleaning wells on a contract basis |
| 213112 |
Cleaning, repairing, and dismantling oil and gas field lease tanks on a contract basis |
| 213112 |
Contract services (except geophysical surveying and mapping, site preparation, construction, and transportation activities) for oil and gas fields |
| 213112 |
Core cutting in oil and gas wells, on a contract basis |
| 213112 |
Core drilling, exploration services, oil and gas field |
| 213112 |
Cutting cores in oil and gas wells on a contract basis |
| 213112 |
Derrick building, repairing, and dismantling at oil and gas fields on a contract basis |
| 213112 |
Dismantling of oil well rigs on a contract basis |
| 213112 |
Drilling rat holes and mouse holes at oil and gas fields on a contract basis |