# Rotary Drill Operators, Oil and Gas > Set up or operate a variety of drills to remove underground oil and gas, or remove core samples for testing during oil and gas exploration. - Code: 47-5012.00 (O*NET-SOC; SOC 2018 47-5012) - Family: [Construction & Extraction](https://foundation.org.ai/occupations#family-47), one of its 65 occupations - Tasks: 20 tasks (16 core and 4 supplemental) - Page: https://foundation.org.ai/occupations/47-5012.00 - JSON: https://foundation.org.ai/data/tasks/47-5012.00.json ## What the work is made of 1. Train crews, and introduce procedures to make drill work more safe and effective. Core task · Task 8296 · Rated by 105 people who do the job, December 2005 2. Observe pressure gauge and move throttles and levers to control the speed of rotary tables, and to regulate pressure of tools at bottoms of boreholes. Core task · Task 8297 · Rated by 106 people who do the job, December 2005 3. Count sections of drill rod to determine depths of boreholes. Core task · Task 8298 · Rated by 103 people who do the job, December 2005 4. Push levers and brake pedals to control gasoline, diesel, electric, or steam draw works that lower and raise drill pipes and casings in and out of wells. Core task · Task 8299 · Rated by 106 people who do the job, December 2005 5. Connect sections of drill pipe, using hand tools and powered wrenches and tongs. Core task · Task 8300 · Rated by 106 people who do the job, December 2005 6. Maintain records of footage drilled, location and nature of strata penetrated, materials and tools used, services rendered, and time required. Core task · Task 8301 · Rated by 105 people who do the job, December 2005 7. Maintain and adjust machinery to ensure proper performance. Core task · Task 8302 · Rated by 106 people who do the job, December 2005 8. Start and examine operation of slush pumps to ensure circulation and consistency of drilling fluid or mud in well. Core task · Task 8303 · Rated by 105 people who do the job, December 2005 9. Locate and recover lost or broken bits, casings, and drill pipes from wells, using special tools. Core task · Task 8304 · Rated by 106 people who do the job, December 2005 10. Weigh clay, and mix with water and chemicals to make drilling mud. Core task · Task 8305 · Rated by 105 people who do the job, December 2005 11. Direct rig crews in drilling and other activities, such as setting up rigs and completing or servicing wells. Core task · Task 8306 · Rated by 104 people who do the job, December 2005 12. Monitor progress of drilling operations, and select and change drill bits according to the nature of strata, using hand tools. Core task · Task 8307 · Rated by 103 people who do the job, December 2005 13. Repair or replace defective parts of machinery, such as rotary drill rigs, water trucks, air compressors, and pumps, using hand tools. Core task · Task 8308 · Rated by 106 people who do the job, December 2005 14. Clean and oil pulleys, blocks, and cables. Core task · Task 8309 · Rated by 106 people who do the job, December 2005 15. Bolt together pump and engine parts, and connect tanks and flow lines. Core task · Task 8310 · Rated by 104 people who do the job, December 2005 16. Remove core samples during drilling to determine the nature of the strata being drilled. Core task · Task 8311 · Rated by 106 people who do the job, December 2005 17. Cap wells with packers, or turn valves, to regulate outflow of oil from wells. Supplemental task · Task 8312 · Rated by 106 people who do the job, December 2005 18. Line drilled holes with pipes, and install all necessary hardware, to prepare new wells. Supplemental task · Task 8313 · Rated by 105 people who do the job, December 2005 19. Position and prepare truck-mounted derricks at drilling areas specified on field maps. Supplemental task · Task 8314 · Rated by 104 people who do the job, December 2005 20. Plug observation wells, and restore sites. Supplemental task · Task 8315 · Rated by 105 people who do the job, December 2005 ## More in Construction & Extraction - [Boilermakers](https://foundation.org.ai/occupations/47-2011.00): 17 tasks - [Brickmasons and Blockmasons](https://foundation.org.ai/occupations/47-2021.00): 14 tasks - [Carpenters](https://foundation.org.ai/occupations/47-2031.00): 29 tasks - [Carpet Installers](https://foundation.org.ai/occupations/47-2041.00): 16 tasks - [Cement Masons and Concrete Finishers](https://foundation.org.ai/occupations/47-2051.00): 26 tasks - [Construction and Building Inspectors](https://foundation.org.ai/occupations/47-4011.00): 19 tasks - [Construction and Related Workers, All Other](https://foundation.org.ai/occupations/47-4099.00): no tasks listed - [Construction Laborers](https://foundation.org.ai/occupations/47-2061.00): 27 tasks - [Continuous Mining Machine Operators](https://foundation.org.ai/occupations/47-5041.00): 15 tasks - [Derrick Operators, Oil and Gas](https://foundation.org.ai/occupations/47-5011.00): 15 tasks - 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[Pile Driver Operators](https://foundation.org.ai/occupations/47-2072.00): 5 tasks - [Pipelayers](https://foundation.org.ai/occupations/47-2151.00): 14 tasks - [Plasterers and Stucco Masons](https://foundation.org.ai/occupations/47-2161.00): 15 tasks - [Plumbers, Pipefitters, and Steamfitters](https://foundation.org.ai/occupations/47-2152.00): 30 tasks - [Rail-Track Laying and Maintenance Equipment Operators](https://foundation.org.ai/occupations/47-4061.00): 26 tasks - [Reinforcing Iron and Rebar Workers](https://foundation.org.ai/occupations/47-2171.00): 7 tasks - [Rock Splitters, Quarry](https://foundation.org.ai/occupations/47-5051.00): 9 tasks - [Roof Bolters, Mining](https://foundation.org.ai/occupations/47-5043.00): 14 tasks - [Roofers](https://foundation.org.ai/occupations/47-2181.00): 27 tasks - [Roustabouts, Oil and Gas](https://foundation.org.ai/occupations/47-5071.00): 13 tasks - [Segmental Pavers](https://foundation.org.ai/occupations/47-4091.00): 12 tasks - [Septic Tank Servicers and Sewer Pipe Cleaners](https://foundation.org.ai/occupations/47-4071.00): 22 tasks - 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