Example of a map used by reservoir engineers to determine where to drill a well. This screenshot is of a structure map generated by contour map software for an 8500 ft deep gas and oil reservoir in the Earth field, Vermilion Parish, Erath, Louisiana. The left-to-right gap near the top of the contour map indicates a fault line. This fault line is between the blue/green contour lines and the purple/red/yellow contour lines. The thin red circular contour line in the middle of the map indicates the top of the oil reservoir. Because gas floats above oil, the thin red contour line marks the gas/oil contact zone.

Petroleum engineering is a field of engineering concerned with the activities related to the production of hydrocarbons, which can be either crude oil or natural gas.[1] Exploration and production are deemed to fall within the upstream sector of the oil and gas industry. Exploration, by earth scientists, and petroleum engineering are the oil and gas industry's two main subsurface disciplines, which focus on maximizing economic recovery of hydrocarbons from subsurface reservoirs. Petroleum geology and geophysics focus on provision of a static description of the hydrocarbon reservoir rock, while petroleum engineering focuses on estimation of the recoverable volume of this resource using a detailed understanding of the physical behavior of oil, water and gas within porous rock at very high pressure.

The combined efforts of geologists and petroleum engineers throughout the life of a hydrocarbon accumulation determine the way in which a reservoir is developed and depleted, and usually they have the highest impact on field economics. Petroleum engineering requires a good knowledge of many other related disciplines, such as geophysics, petroleum geology, formation evaluation (well logging), drilling, economics, reservoir simulation, reservoir engineering, well engineering, artificial lift systems, completions and petroleum production engineering.

Recruitment to the industry has historically been from the disciplines of physics, mechanical engineering, chemical engineering and mining engineering. Subsequent development training has usually been done within oil companies.


The profession got its start in 1914 within the American Institute of Mining, Metallurgical and Petroleum Engineers (AIME). The first Petroleum Engineering degree was conferred in 1915 by the University of Pittsburgh.[2] Since then, the profession has evolved to solve increasingly difficult situations. Improvements in computer modeling, materials and the application of statistics, probability analysis, and new technologies like horizontal drilling and enhanced oil recovery, have drastically improved the toolbox of the petroleum engineer in recent decades. Automation,[3] sensors,[4] and robots[5][6] are being used to propel the industry to more efficiency and safety.

Deep-water, arctic and desert conditions are usually contended with. High temperature and high pressure (HTHP) environments have become increasingly commonplace in operations and require the petroleum engineer to be savvy in topics as wide-ranging as thermo-hydraulics, geomechanics, and intelligent systems.

The Society of Petroleum Engineers (SPE) is the largest professional society for petroleum engineers and publishes much technical information and other resources to support the oil and gas industry. It provides free online education (webinars), mentoring, and access to SPE Connect, an exclusive platform for members to discuss technical issues, best practices, and other topics. SPE members also are able to access the SPE Competency Management Tool to find knowledge and skill strengths and opportunities for growth.[7] SPE publishes peer-reviewed journals, books, and magazines.[8] SPE members receive a complimentary subscription to the Journal of Petroleum Technology and discounts on SPE's other publications.[9] SPE members also receive discounts on registration fees for SPE organized events and training courses.[9] SPE provides scholarships and fellowships to undergraduate and graduate students.

According to the United States Department of Labor's Bureau of Labor Statistics, petroleum engineers are required to have a bachelor's degree in engineering, generally a degree focused on petroleum engineering is preferred, but degrees in mechanical, chemical, and civil engineering are satisfactory as well.[10] Petroleum engineering education is available at many universities in the United States and throughout the world - primarily in oil producing regions. U.S. News & World Report maintains a list of the Best Undergraduate Petroleum Engineering Programs.[11] SPE and some private companies offer training courses.[12][13][14] Some oil companies have considerable in-house petroleum engineering training classes.[15][16]

Petroleum engineering salaries

Petroleum engineering has historically been one of the highest-paid engineering disciplines, although there is a tendency for mass layoffs when oil prices decline and waves of hiring as prices rise. In 2020, the United States Department of Labor's Bureau of Labor Statistics reported the median pay for petroleum engineers was US$137,330, or roughly $66.02 per hour.[17] The same summary projects there will be 3% job growth in this field from 2019 to 2029.[17]

SPE annually conducts a salary survey. In 2017, SPE reported that the average SPE professional member reported earning US$194,649 (including salary and bonus).[18] The average base pay reported in 2016 was $143,006.[18] Base pay and other compensation was on average was highest in the United States where the base pay was US$174,283. Drilling and production engineers tended to make the best base pay, US$160,026 for drilling engineers and US$158,964 for production engineers. Average base pay ranged from US$96,382-174,283.[19] There are still significant gender pay gaps, plus or minus 5% of the US average pay gap which was 18% difference in 2017.[20][19]

Also in 2016, U.S. News & World Report named petroleum engineering the top college major in terms of highest median annual wages of college-educated workers (age 25–59).[21] The 2010 National Association of Colleges and Employers survey showed petroleum engineers as the highest paid 2010 graduates, at an average annual salary of $125,220.[22] For individuals with experience, salaries can range from $170,000 to $260,000. They make an average of $112,000 a year and about $53.75 per hour. In a 2007 article, Forbes.com reported that petroleum engineering was the 24th best paying job in the United States.[23]


Petroleum engineers divide themselves into several types:[1]


Petroleum Engineering, like most forms of engineering, requires a strong foundation in physics, chemistry, and mathematics.[24] Other fields pertinent to petroleum engineering include geology, formation evaluation, fluid flow in porous media, well drilling technology, economics, geostatistics, etc.[24][25]

Petroleum Geostatistics

Geostatistics as applied to petroleum engineering uses statistical analysis to characterize reservoirs and create flow simulations that quantify uncertainties of the location of oil and gas.[26]

Petroleum Geology

Petroleum geology is an interdisciplinary field composed of geophysics, geochemistry, and paleontology.[27] The main focus of petroleum geology is the exploration and appraisal of reservoirs containing hydrocarbons via technical forms of analysis.[27]

Well Drilling Technology

Well drilling technology is primarily the focus for drilling engineers. The two forms of well drilling are percussion and rotary drilling, rotary being the most common of the two. An important aspect of drilling is the drill bit, which creates a borehole of approximately three and a half to thirty inches in diameter. The three classes of drill bits, roller cone, fixed cutter, and hybrid, each use teeth to break up the rock.[28] To optimize drilling efficiency and cost, drilling engineers make use of drilling simulators that allow them to identify drilling conditions.[29] Drilling technologies including horizontal drilling and directional drilling have been developed to obtain hydrocarbons profitably from impermeable and coal-bed methane accumulations.

Professional associations

See also


  1. ^ a b "Petroleum Engineers: Occupational Outlook Handbook: U.S. Bureau of Labor Statistics". www.bls.gov. Retrieved 2018-02-06.
  2. ^ "Petroleum Engineering". Britannica. Retrieved 3 February 2012.
  3. ^ "Drilling Automation". Journal of Petroleum Technology. December 14, 2017.
  4. ^ "JPT Flow Sensor Technology Seeks to Replace the Coriolis Meter". www.spe.org. Retrieved 2017-12-14.
  5. ^ "JPT Competing Companies Building Robots to Place Receivers". www.spe.org. Retrieved 2017-12-14.
  6. ^ "JPT Robot Removes Operators From Extreme Environments". www.spe.org. Retrieved 2017-12-14.
  7. ^ "SPE Member Resource Guide" (PDF). Society of Petroleum Engineers. Retrieved December 12, 2017.
  8. ^ "Publications | The Society of Petroleum Engineers". www.spe.org. Retrieved 2017-12-14.
  9. ^ a b "Professional Membership Benefits | Society of Petroleum Engineers". www.spe.org. Retrieved 2017-12-14.
  10. ^ "Petroleum Engineers: Occupational Outlook Handbook: U.S. Bureau of Labor Statistics". www.bls.gov. Retrieved 2018-02-06.
  11. ^ "Best Undergraduate Petroleum Engineering Programs (Doctorate)". U.S. News & World Report. February 6, 2018.
  12. ^ "PEICE – Practical Professional Career Training for the Oil & Gas Industry". www.peice.com. Retrieved 2017-12-14.
  13. ^ "PetroSkills Oil and Gas Training | World's Petroleum Training". www.petroskills.com. Retrieved 2017-12-14.
  14. ^ "Online Training, Online Courses, Web-based Learning Management System - Learning Management Express(LMX) - NexLearn". www.oilandgastraining.com. Retrieved 2017-12-14.
  15. ^ "Energy Pipeline: Noble Energy's outdoor training facility brings industry to community's fingertips". Retrieved 2017-12-14.
  16. ^ "Oil and Gas Training & Career Development | Schlumberger". www.slb.com. Archived from the original on 2017-12-18. Retrieved 2017-12-14.
  17. ^ a b "Petroleum Engineers : Occupational Outlook Handbook: : U.S. Bureau of Labor Statistics". www.bls.gov. Retrieved 2021-04-28.
  18. ^ a b "Oil and Gas Pay | Salary Survey | Society of Petroleum Engineers". www.spe.org. Retrieved 2017-12-14.
  19. ^ a b "2017 SPE Membership Salary Survey Highlight Report-November 2017" (PDF). Society of Petroleum Engineers. January 3, 2018. Retrieved January 3, 2018.
  20. ^ "Highlights of women's earnings in 2017 : BLS Reports: U.S. Bureau of Labor Statistics". www.bls.gov. Retrieved 2021-04-28.
  21. ^ "Top 10 College Majors That Earn the Highest Salaries". U.S. News & World Report. February 6, 2018.
  22. ^ "NACE". Naceweb.org. Retrieved 2011-12-18.
  23. ^ "America's Best- And Worst-Paying Jobs". Forbes. 2007-06-04. Retrieved 2011-12-18.
  24. ^ a b Cunha, Luciane B.; Cunha, J. C. (2004-01-01). Petroleum Engineering Education - Challenges and Changes for the Next 20 Years. Society of Petroleum Engineers. doi:10.2118/90556-MS. ISBN 9781555631512.
  25. ^ Petroleum Engineering: Principles and Practice. Springer Science & Business Media. 2012-12-06. ISBN 9789401096010.
  26. ^ Chambers, Richard L.; Yarus, Jeffrey M. (2006-11-01). "Practical Geostatistics - An Armchair Overview for Petroleum Reservoir Engineers". Journal of Petroleum Technology. 58 (11): 78–86. doi:10.2118/103357-JPT. ISSN 0149-2136.
  27. ^ a b Selley, Richard C.; Sonnenberg, Stephen A. (2014-11-08). Elements of Petroleum Geology. Academic Press. ISBN 9780123860323.
  28. ^ Ma, Tianshou; Chen, Ping; Zhao, Jian (2016-12-01). "Overview on vertical and directional drilling technologies for the exploration and exploitation of deep petroleum resources". Geomechanics and Geophysics for Geo-Energy and Geo-Resources. 2 (4): 365–395. doi:10.1007/s40948-016-0038-y. ISSN 2363-8427.
  29. ^ Boonyapaluk, P.; Hareland, G.; Rampersad, P. R. (1994-01-01). Drilling Optimization Using Drilling Data and Available Technology. Society of Petroleum Engineers. doi:10.2118/27034-MS. ISBN 9781555634704.