| 213112 |
Oil and gas field services on a contract basis (except geophysical surveying and mapping, site preparation, construction, and transportation activities) |
| 213112 |
Oil field exploration (except surveying) on a contract basis |
| 213112 |
Oil sampling services on a contract basis |
| 213112 |
Oil well logging on a contract basis |
| 213112 |
Oil well rig building, repairing, and dismantling, on a contract basis |
| 213112 |
Operating condensate gasoline field gathering lines on a contract basis |
| 213112 |
Paraffin services, oil and gas field, on a contract basis |
| 213112 |
Perforating oil and gas well casings on a contract basis |
| 213112 |
Pipe testing services, oil and gas field, on a contract basis |
| 213112 |
Plugging and abandoning wells on a contract basis |