Bolt together pump and engine parts, and connect tanks and flow lines.
Cap wells with packers, or turn valves, in order to regulate outflow of oil from wells.
Clean and oil pulleys, blocks, and cables.
Connect sections of drill pipe, using hand tools and powered wrenches and tongs.
Count sections of drill rod in order to determine depths of boreholes.
Dig holes, set forms, and mix and pour concrete, for foundations of steel or wooden derricks.
Direct rig crews in drilling and other activities, such as setting up rigs and completing or servicing wells.
Line drilled holes with pipes, and install all necessary hardware, in order to prepare new wells.
Lower and explode charges in boreholes in order to start flow of oil from wells.
Monitor progress of drilling operations, and select and change drill bits according to the nature of strata, using hand tools.
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.
Position and prepare truck-mounted derricks at drilling areas that are specified on field maps.
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.
Remove core samples during drilling in order to determine the nature of the strata being drilled.
Start and examine operation of slush pumps in order to ensure circulation and consistency of drilling fluid or mud in well.
Weigh clay, and mix with water and chemicals to make drilling mud.
Locate and recover lost or broken bits, casings, and drill pipes from wells, using special tools.
Maintain and adjust machinery in order to ensure proper performance.
Maintain records of footage drilled, location and nature of strata penetrated, materials and tools used, services rendered, and time required.
Plug observation wells, and restore sites.
Repair or replace defective parts of machinery, such as rotary drill rigs, water trucks, air compressors, and pumps, using hand tools.
Train crews, and introduce procedures to make drill work more safe and effective
Mechanical -- Knowledge of machines and tools, including their designs, uses, repair, and maintenance.
Engineering and Technology -- Knowledge of the practical application of engineering science and technology. This includes applying principles, techniques, procedures, and equipment to the design and production of various goods and services.
Operation and Control -- Controlling operations of equipment or systems.
Operation Monitoring -- Watching gauges, dials, or other indicators to make sure a machine is working properly.
Repairing -- Repairing machines or systems using the needed tools.
Equipment Selection -- Determining the kind of tools and equipment needed to do a job.
Control Precision -- The ability to quickly and repeatedly adjust the controls of a machine or a vehicle to exact positions.
Static Strength -- The ability to exert maximum muscle force to lift, push, pull, or carry objects.
Manual Dexterity -- The ability to quickly move your hand, your hand together with your arm, or your two hands to grasp, manipulate, or assemble objects.
Controlling Machines and Processes -- Using either control mechanisms or direct physical activity to operate machines or processes (not including computers or vehicles).
Handling and Moving Objects -- Using hands and arms in handling, installing, positioning, and moving materials, and manipulating things.
Performing General Physical Activities -- Performing physical activities that require considerable use of your arms and legs and moving your whole body, such as climbing, lifting, balancing, walking, stooping, and handling of materials.
Monitor Processes, Materials, or Surroundings -- Monitoring and reviewing information from materials, events, or the environment, to detect or assess problems.
Repairing and Maintaining Mechanical Equipment -- Servicing, repairing, adjusting, and testing machines, devices, moving parts, and equipment that operate primarily on the basis of mechanical (not electronic) principles.
Documenting/Recording Information -- Entering, transcribing, recording, storing, or maintaining information in written or electronic/magnetic form.
Inspecting Equipment, Structures, or Material -- Inspecting equipment, structures, or materials to identify the cause of errors or other problems or defects.
Getting Information -- Observing, receiving, and otherwise obtaining information from all relevant sources.
Operating Vehicles, Mechanized Devices, or Equipment -- Running, maneuvering, navigating, or driving vehicles or mechanized equipment, such as forklifts, passenger vehicles, aircraft, or water craft.
Identifying Objects, Actions, and Events -- Identifying information by categorizing, estimating, recognizing differences or similarities, and detecting changes in circumstances or events.