| 1. | Train crews, and introduce procedures to make drill work more safe and effective. |
| 2. | Observe pressure gauge and move throttles and levers in order to control the speed of rotary tables, and to regulate pressure of tools at bottoms of boreholes. |
| 3. | Count sections of drill rod in order to determine depths of boreholes. |
| 4. | Push levers and brake pedals in order to control gasoline, diesel, electric, or steam draw works that lower and raise drill pipes and casings in and out of wells. |
| 5. | Connect sections of drill pipe, using hand tools and powered wrenches and tongs. |
| 6. | Maintain records of footage drilled, location and nature of strata penetrated, materials and tools used, services rendered, and time required. |
| 7. | Maintain and adjust machinery in order to ensure proper performance. |
| 8. | Start and examine operation of slush pumps in order to ensure circulation and consistency of drilling fluid or mud in well. |
| 9. | Locate and recover lost or broken bits, casings, and drill pipes from wells, using special tools. |
| 10. | Weigh clay, and mix with water and chemicals to make drilling mud. |
| 11. | Direct rig crews in drilling and other activities, such as setting up rigs and completing or servicing wells. |
| 12. | Monitor progress of drilling operations, and select and change drill bits according to the nature of strata, using hand tools. |
| 13. | Repair or replace defective parts of machinery, such as rotary drill rigs, water trucks, air compressors, and pumps, using hand tools. |
| 14. | Clean and oil pulleys, blocks, and cables. |
| 15. | Bolt together pump and engine parts, and connect tanks and flow lines. |
| 16. | Remove core samples during drilling in order to determine the nature of the strata being drilled. |
| 17. | Cap wells with packers, or turn valves, in order to regulate outflow of oil from wells. |
| 18. | Line drilled holes with pipes, and install all necessary hardware, in order to prepare new wells. |
| 19. | Position and prepare truck-mounted derricks at drilling areas that are specified on field maps. |
| 20. | Plug observation wells, and restore sites. |
| 21. | Lower and explode charges in boreholes in order to start flow of oil from wells. |
| 22. | Dig holes, set forms, and mix and pour concrete, for foundations of steel or wooden derricks. |