Geological Sample Test Technicians

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About the Job

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.

It is also Called

  • Well Tester
  • Well Logger
  • Tester
  • Test Technician
  • Test Evaluator
  • Test Engine Operator
  • Test Engine Evaluator
  • Temperature Logging Operator
  • Specialist Field Engineer
  • Research Associate
View All

What They Do

  • Collaborate with hydrogeologists to evaluate groundwater or well circulation.
  • Test and analyze samples from potential underground carbon sequestration sites.
  • Inspect engines for wear or defective parts, using equipment or measuring devices.
  • Participate in the evaluation of possible geothermal energy plant locations.
  • Prepare, transcribe, or analyze seismic, gravimetric, well log, or other geophysical or survey data.
  • Supervise well exploration, drilling activities, or well completions.
  • Assess the environmental impacts of development projects on subsurface materials.
  • Participate in the evaluation of possible mining locations.
  • Prepare notes, sketches, geological maps, or cross sections.
  • Plot information from aerial photographs, well logs, section descriptions, or other databases.


People who work in this occupation generally have the interest code: RIC.

This means people who work in this occupation generally have Realistic interests, but also prefer Investigative and Conventional environments.

Work Values

People who work in this occupation generally prize Support, but also value Relationships and Independence in their jobs.

Things They Need to Know

  • Chemistry - Knowledge of the chemical composition, structure, and properties of substances and of the chemical processes and transformations that they undergo. This includes uses of chemicals and their interactions, danger signs, production techniques, and disposal methods.
  • English Language - Knowledge of the structure and content of the English language including the meaning and spelling of words, rules of composition, and grammar.
  • Mathematics - Knowledge of arithmetic, algebra, geometry, calculus, statistics, and their applications.
  • Computers and Electronics - Knowledge of circuit boards, processors, chips, electronic equipment, and computer hardware and software, including applications and programming.
  • 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.

Things They Need to Be Able to Do

  • Critical Thinking - Using logic and reasoning to identify the strengths and weaknesses of alternative solutions, conclusions or approaches to problems.
  • Reading Comprehension - Understanding written sentences and paragraphs in work related documents.
  • Monitoring - Monitoring/Assessing performance of yourself, other individuals, or organizations to make improvements or take corrective action.
  • Writing - Communicating effectively in writing as appropriate for the needs of the audience.
  • Science - Using scientific rules and methods to solve problems.
  • Speaking - Talking to others to convey information effectively.
  • Active Learning - Understanding the implications of new information for both current and future problem-solving and decision-making.

Education Required

Most of these occupations require a four-year bachelor's degree, but some do not.


In 2017, the average annual wage in Pennsylvania was $50,900 with most people making between $26,290 and $83,870


avg. annual growth

During 2014, this occupation employed approximately 520 people in Pennsylvania. It is projected that there will be 530 employed in 2024.

This occupation will have about 1 openings due to growth and about 19 replacement openings for approximately 20 total annual openings.

Pennsylvania Department of Education