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NOC Code: NOC Code: 8412 Occupation: Oil and gas well drilling and related workers and services operators
Occupation Description: Occupation Description:
Oil and gas well drilling workers operate drilling and service rig machinery as intermediate members of the rig crew. Oil and gas well services operators drive trucks and operate specialized hydraulic pumping systems to place cement in wells or to treat wells with chemicals, sand mixtures or gases to stimulate production. Workers in this unit group are employed by drilling and well service contractors and by petroleum producing companies. Oil and gas well drilling workers operate drilling and service rig machinery as intermediate members of the rig crew. Oil and gas well services operators drive trucks and operate specialized hydraulic pumping systems to place cement in wells or to treat wells with chemicals, sand mixtures or gases to stimulate production. Workers in this unit group are employed by drilling and well service contractors and by petroleum producing companies.

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Table will display the Skill Level for the Noc specified
Essential Skills Essential Skills Levels
Reading Reading 1 2 3 4
Writing Writing 1 2 3
Document Use Document Use 1 2 3
Digital Technology Digital Technology 1 2
Oral Communication Oral Communication 1 2 3
Money Math Money Math 1 2
Measurement and Calculation Measurement and Calculation 1 2 3
Data Analysis Data Analysis 1 2 3
Numerical Estimation Numerical Estimation 1 2
Job Task Planning and Organizing Job Task Planning and Organizing 1 2
Decision Making Decision Making 1 2 3
Problem Solving Problem Solving 1 2
Finding Information Finding Information 1 2
Critical Thinking Critical Thinking 1 2

  • The skill levels represented in the above chart illustrate the full range of sample tasks performed by experienced workers and not individuals preparing for or entering this occupation for the first time.
  • Note that some occupational profiles do not include all Numeracy and Thinking Essential Skills.

If you would like to print a copy of the chart and sample tasks, click on the "Print Occupational Profile" button at the top of the page.

  • Read logbook entries, e.g. oil and gas drilling workers read drilling logs to learn about events that took place during previous shifts. (1)
  • Read reminders and short notes from co-workers, e.g. read short handwritten instructions to learn about tasks that need to be completed. (1)
  • Read workplace safety materials, e.g. oil and gas well services operators read Material Safety Data Sheets (MSDS) and engineering handbooks to understand the chemical composition of proppants and the possible hazards they present. (2)
  • Read email messages and company memos that describe upcoming meetings, safety precautions and new procedures and policies. (2)
  • Read a variety of instructions, e.g. read step-by-step instructions for the maintenance of equipment, such as pumps and compressors. (2)
  • Read work permits to learn about repairs being performed on equipment. (2)
  • Read trade journals, brochures and website articles to learn about new products to stay up-to-date on new technology. (3)
  • Read call sheets and operation manuals, e.g. oil and gas drilling workers read manuals to learn about the order of well control procedures and the actions to be taken in the event of incidents, such as blowouts. (3)
  • Read regulations, e.g. read transportation of dangerous goods regulations to learn about training and equipment requirements. (4)
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  • Write short notes to co-workers, e.g. write short notes to co-workers describing incidents that took place during your shifts. (1)
  • Write short comments in logbooks and forms, e.g. write short comments in vehicle inspection and equipment maintenance forms to record the condition of equipment and the outcomes of inspections. (1)
  • Write reports to describe events leading up to workplace accidents, e.g. write about injuries and events when completing reports for workers' compensation boards. (2)
  • Write step-by-step instructions, e.g. write instructions for co-workers explaining how to set-up, use and maintain equipment. (3)
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Document Use
  • Scan meters and digital readouts, e.g. scan readings on scales and equipment gauges to locate weights, energy readings and temperatures. (1)
  • Locate information on signs and icons, e.g. scan warning signs to learn about fall hazards and the location of high-pressure gas lines. (1)
  • Scan labels on product packaging, e.g. scan identification labels on lubricants, inhibitors and other fluid additives to learn about their properties and concentrations. (1)
  • Enter data into a variety of forms, e.g. complete equipment maintenance and job hazard analysis forms by entering data, such as dates and times, and by checking boxes. (2)
  • Scan worksite procedure checklists to locate emergency contact information, hazards and other information about conditions that are unique to individual work sites. (2)
  • Locate data in a variety of logs and tables, e.g. scan specification tables to locate sizes, qualities, pressures, temperatures and depths. (2)
  • Scan line graphs and schematic representations of downhole activities, equipment and rock formations, e.g. scan digitally produced schematics of rock formations and equipment to correlate gauge readings with depths. (3)
  • Scan call sheets to establish depths, pressures, chemicals, diameters and rates of flow as they relate to times and procedures. (3)
  • Scan process and instrument diagrams, e.g. scan process control diagrams to determine the operating condition and performance of equipment. (3)
  • Complete complex forms, e.g. complete treatment reports by recording activities and times, changes, pressures, weights, temperatures and flow rates. (3)
  • Scan assembly drawings, e.g. scan assembly drawings to learn how to disassemble and reassemble pumps. (3)
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Digital Technology
  • Use calculators and personal digital assistant (PDA) devices to complete numeracy-related tasks, such as calculating material requirements. (1)
  • Use industry-specific database applications to input and retrieve data, such as names, wellbore identification numbers and readings. (1)
  • Use spreadsheet software to calculate material requirements and expense claims. (2)
  • Use computer-controlled machinery programmed to check drilling operations, such as downhole depths, temperatures, pressures and flows. (2)
  • Use CD-ROMs and DVDs to access learning materials produced by trainers, suppliers, employers and associations. (2)
  • Use browsers and search engines to access information, such as company directories and publications produced by organizations, such as the Canadian Association of Oilwell Drilling Contractors (CAODC). (2)
  • Use computer-assisted design (CAD), manufacturing and machining software, such as AutoCAD to retrieve and print scaled drawings of equipment and facilities. (2)
  • Use the Internet to access training courses and seminars offered by apprenticeship trainers, associations, suppliers, employers and sector councils, e.g. access online H2S Alive training delivered by Enform. (2)
  • Use communication software to exchange email with co-workers and consultants. (2)
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Oral Communication
  • Speak with co-workers, e.g. speak with drillers and floorhands to co-ordinate tasks, address equipment faults and discuss risks and safety hazards. (2)
  • Participate in pre-job safety meetings to discuss job outlines, procedures, hazards, potential problems and tool and material requirements. (2)
  • Exchange technical information with consultants and engineers, e.g. speak with petroleum engineers about the amount of additives needed to produce adequate fluid densities and downhole well pressures. (2)
  • Provided detailed, step-by-step instructions, e.g. explain to new employees the procedures to mix drilling mud to specific densities, compositions and quantities. (3)
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Money Math
  • Prepare invoices, e.g. calculate rental fees using daily and weekly rental fee rates. (2)
  • Calculate expense claim amounts for travel and supplies, e.g. calculate reimbursements for out-of-pocket expenses, per diems and the use of personal vehicles at per-kilometre rates. (2)
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Measurement and Calculation
  • Measure distances, angles and volumes using basic measuring tools, e.g. measure distances using stride tapes. (1)
  • Calculate the volumes of fluids in holding tanks and drilling mud in below-ground casings. (2)
  • Calculate requirements, e.g. calculate the number of pipes needed to trip down wells and the length of time it will take to pump fluids into wells, based on the volumes per pump stroke and the number of strokes per minute. (3)
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Data Analysis
  • Compare measurements of energy, dimension, pressure, speed, temperature and torque to specifications, e.g. compare pressure readings to standard and required pressures found in call sheets. (1)
  • Calculate summary averages, such as the number of pipes extracted per hour. (2)
  • Analyze multiple readings of pressure, weight and rate of flow to evaluate drilling system functions and troubleshoot faults. (3)
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Numerical Estimation
  • Estimate the percentage of oil, water and sand in samples taken from drills to record in swab reports. (1)
  • Estimate the amount of mud being lost in drilling holes. (1)
  • Estimate the volume of fluids at prescribed depths to determine pumping speed and to control whether pumps will end with downstrokes or upstrokes. (2)
  • Estimate the weight of loads and the height of obstructions, such as power lines. (2)
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Job Task Planning and Organizing
  • Oil and gas well drilling and related workers and services operators follow schedules and the order of tasks as determined by supervisors and the job plan. They prepare materials and maintain equipment needed in their tasks. They co-ordinate their work with others in their crew and adjust their tasks as conditions change and as supervisors advise. (2)
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Decision Making
  • Decide to report unsafe work conditions. Act on requirements to report unsafe work conditions by discussing your concerns and decisions with co-workers and supervisors. (2)
  • Choose tools and methods, e.g. select the tools needed to perform equipment repairs and the methods to arrange pipes in racks as they come out of wells. (2)
  • Decide the order of tasks and the priorities, e.g. decide when to add chemicals to mud and the order in which to perform maintenance-related duties. (2)
  • Make decisions about operations and set-up procedures, e.g. decide to shut down nitrogen pumping operations when there are rapid changes in pressure. (3)
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Problem Solving
  • Encounter unsafe conditions. Evaluate the situation and look for ways to reduce the risks. Do not perform tasks that cannot be done safely. (1)
  • You are asked to perform unsafe work. Speak with supervisors to clarify their requests and refuse to perform work you consider to be unsafe. Follow legislated rights to refuse unsafe work policies until satisfactory outcomes are achieved. (2)
  • Encounter equipment malfunctions. Inform co-workers of the malfunctions, troubleshoot the faults and attempt to make repairs. Contact supervisors if the equipment cannot be repaired and perform other duties until the equipment is working. (2)
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Finding Information
  • Locate information about a well's status by scanning electronic displays, reading logbook entries and speaking with co-workers and consultants. (2)
  • Consult charts, manuals and engineers' handbooks to look up and interpret the relationships between pipe sizes, pressures, volumes and rates of flow. (2)
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Critical Thinking
  • Assess the properties of drilling mud. Take measurements and observe the appearance and consistency of the drilling mud. (1)
  • Evaluate your ability to perform work safely. Consider factors, such as personal fatigue, stress and impairments, such as the fear of heights and confined spaces. (2)
  • Assess the performance of equipment. Consider equipment readings and look for signs of unusual vibrations, noises and odours. (2)
  • Evaluate the safety of work sites and tasks. Consider potential hazards, such as confined spaces, electrocution and exposure to gas, such as hydrogen sulphide. Also take note of tripping hazards, improperly stored tools, frayed cables and defective equipment. (2)
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