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Geological Sample Test Technicians - 19-4041.02

O*NET-SOC Description

Test or analyze geological samples, crude oil, or minerals to detect presence of petroleum, gas, or mineral deposits indicating potential for exploration or production or to determine physical or chemical properties to ensure that products meet quality standards.

Sample of Reported Job Titles

  • Core Inspector
  • Electron Microprobe Operator
  • Environmental Field Services Technician
  • Environmental Sampling Technician
  • Laboratory Technician
  • Materials Technician
  • Organic Section Technical Lead
  • Physical Science Technician
  • Quality Control Technician (QC Technician)
  • Research Associate

SOC Occupation Groups

Related Occupations


  • Adjust or repair testing, electrical, or mechanical equipment or devices.
  • Assemble, operate, or maintain field or laboratory testing, measuring, or mechanical equipment.
  • Assess the environmental impacts of development projects on subsurface materials.
  • Collaborate with hydrogeologists to evaluate groundwater or well circulation.
  • Collect or prepare solid or fluid samples for analysis.
  • Compile, log, or record testing or operational data for review and further analysis.
  • Inspect engines for wear or defective parts, using equipment or measuring devices.
  • Participate in geological, geophysical, geochemical, hydrographic, or oceanographic surveys, prospecting field trips, exploratory drilling, well logging, or underground mine survey programs.
  • Participate in the evaluation of possible geothermal energy plant locations.
  • Participate in the evaluation of possible mining locations.
  • Plot information from aerial photographs, well logs, section descriptions, or other databases.
  • Prepare notes, sketches, geological maps, or cross sections.
  • Prepare or review professional, technical, or other reports regarding sampling, testing, or recommendations of data analysis.
  • Prepare, transcribe, or analyze seismic, gravimetric, well log, or other geophysical or survey data.
  • Supervise well exploration, drilling activities, or well completions.
  • Test and analyze samples from potential underground carbon sequestration sites.
  • Test and analyze samples to determine their content and characteristics, using laboratory apparatus or testing equipment.

Detailed Work Activities

  • Analyze geological or geographical data.
  • Analyze geological samples.
  • Calibrate scientific or technical equipment.
  • Collaborate on research activities with scientists or technical specialists.
  • Direct natural resources extraction projects.
  • Inspect equipment to ensure proper functioning.
  • Locate natural resources using geospatial or other environmental data.
  • Maintain laboratory or technical equipment.
  • Operate laboratory or field equipment.
  • Prepare maps.
  • Record research or operational data.
  • Research environmental impact of industrial or development activities.
  • Research geological features or processes.

Military Crosswalk Titles

  • Oil Analysis Operator/Evaluator (Navy - Enlisted)
  • Petroleum Laboratory Specialist (Army - Enlisted)
  • Petroleum Quality Assurance and Additization Specialist (Marine Corps - Enlisted)
  • Petroleum Technician (Army - Warrant Officer only)

Apprenticeship Crosswalk Titles

  • Test-Engine Operator
  • Tester

DOT Crosswalk Titles

  • Field Engineer, Specialist
  • Laboratory Assistant
  • Test-Engine Evaluator
  • Test-Engine Operator
  • Tester
  • Well-Logging Captain, Mud Analysis
  • Well-Logging Operator, Mud Analysis