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Company · Rio de Janeiro · Brazil

Petrobras (Brazil)

In research, Petrobras (Brazil) stands highest in Physical Sciences (#4,144 of 12,888 worldwide), Engineering (#2,626 of 6,636 worldwide) and Ocean Engineering (#126 of 286 worldwide), 2022–2025. Relative to its size it is most specialised in Ocean Engineering, Geophysics and Earth-Surface Processes — Ocean Engineering is 47.4× its share of world research.

petrobras.com.br/enROR OpenAlex
World rank, 2022–2025
#5,882
of 28,054 · #6,612 all time
Rank in Brazil
#67
of 714
Research works
7.7k
▼ 9% vs 2013–17
Citations
80k
10.4 per fractional work
Top-10% rate
8.0%
record average 16.5%
Open access
22%
world 28%

What is Petrobras (Brazil) known for in research?

The fields where it stands highest, 2022–2025, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorksAll time
Physical SciencesDomain #4,144 of 12,888 7.9%1,181 #4223
EngineeringField #2,626 of 6,636 7.6%685 #2551
Ocean EngineeringSubfield #126 of 286 8.2%325 #135
Earth and Planetary SciencesField #881 of 1,209 9.3%200 #1371
Mechanical EngineeringSubfield #1,083 of 1,351 6.4%118 #1001
Computer ScienceField #3,947 of 4,667 9.6%85 #3630
Mechanics of MaterialsSubfield #401 of 458 7.6%71 #899
Environmental ScienceField #3,155 of 3,551 9.0%81 #3108
GeophysicsSubfield #216 of 237 4.5%109 #525
Social SciencesDomain #9,779 of 10,521 7.1%92 #7937

Each strip is that field’s whole ranked pool, with the notch where Petrobras (Brazil) sits in it, in the colour of the band that rank falls in. The track under the rate is the rate itself: it carries no world mark, because the world rate differs by field (from about 6% to 21% in this record).

Which of those standings moved

The same fields on both windows: where it stood over the whole record, and where it stands in 2022–2025. The distance is the story, and it is the one thing the two rank columns above cannot show.

  1. Physical Sciences#4,223 #4,144
  2. Engineering#2,551 #2,626
  3. Ocean Engineering#135 #126
  4. Earth and Planetary Sciences#1,371 #881
  5. Mechanical Engineering#1,001 #1,083
  6. Computer Science#3,630 #3,947
  7. Mechanics of Materials#899 #401
  8. Environmental Science#3,108 #3,155
  9. Geophysics#525 #216
  10. Social Sciences#7,937 #9,779
all time2022–2025, better2022–2025, worse

A dot further right is a better standing. Fields it was not ranked in over the whole record are left out.

What does Petrobras (Brazil) specialise in?

Where its research is concentrated relative to its size: Ocean Engineering takes 47.4× the share of its output that it takes of world research.

  1. Ocean EngineeringSubfield · 325.0 works47×
  2. GeophysicsSubfield · 109.1 works24×
  3. Earth-Surface ProcessesSubfield · 27.5 works18×
  4. Earth and Planetary SciencesField · 200.1 works9.7×
  5. Analytical ChemistrySubfield · 24.5 works9.6×
← less than its size predicts1×more →

Location quotient, a volume reading rather than an impact one. It surfaces small, lopsided specialities.

Field profile

Location quotient across every field it publishes in: outside the ring is more than an institution of this size would be expected to publish, inside it is less.

Agricultural and Biological Sciences: 0.16× its world share, 10 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.18× its world share, 12 worksBiochemistry, Geneti…Immunology and Microbiology: 0.05× its world share, 1 worksImmunology and Micro…Neuroscience: 0.03× its world share, 1 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 0.01× its world share, 0 worksPharmacology, Toxico…Chemical Engineering: 1.62× its world share, 8 worksChemical EngineeringChemistry: 1.84× its world share, 38 worksChemistryComputer Science: 0.83× its world share, 85 worksComputer ScienceEarth and Planetary Sciences: 9.68× its world share, 200 worksEarth and Planetary …Energy: 1.37× its world share, 17 worksEnergyEngineering: 3.46× its world share, 685 worksEngineeringEnvironmental Science: 1.23× its world share, 81 worksEnvironmental ScienceMaterials Science: 1.15× its world share, 53 worksMaterials ScienceMathematics: 0.20× its world share, 3 worksMathematicsPhysics and Astronomy: 0.42× its world share, 12 worksPhysics and AstronomyDentistry: 0.01× its world share, 0 worksDentistryHealth Professions: 0.30× its world share, 10 worksHealth ProfessionsMedicine: 0.04× its world share, 11 worksMedicineNursing: 0.02× its world share, 0 worksNursingArts and Humanities: 0.16× its world share, 6 worksArts and HumanitiesBusiness, Management and Accounting: 0.30× its world share, 13 worksBusiness, Management…Decision Sciences: 2.52× its world share, 32 worksDecision SciencesEconomics, Econometrics and Finance: 0.36× its world share, 10 worksEconomics, Econometr…Psychology: 0.11× its world share, 5 worksPsychologySocial Sciences: 0.16× its world share, 27 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Earth and Planetary Sciences, 9.7×. Every wedge is a field page.

Who are the top researchers at Petrobras (Brazil)?

Ranked on the composite score, Alexandre A. Emerick, Aline Machado de Castro and M.R. Mello lead among researchers whose main affiliation is Petrobras (Brazil).

  1. 1 Alexandre A. Emerick · #158,236 worldwide 263 citations · 20 works
  2. 2 Aline Machado de Castro · #427,365 worldwide 138 citations · 27 works
  3. 3 M.R. Mello · #479,154 worldwide 82 citations · 22 works
  4. 4 Lia Weigert Bressan · #570,219 worldwide 7 citations · 20 works
  5. 5 Rogério Santos · #626,401 worldwide 3 citations · 51 works
  6. 6 Eduardo Falabella Sousa‐Aguiar · #723,377 worldwide 160 citations · 25 works
  7. 7 Sônia Maria Cabral de Menezes · #739,077 worldwide 105 citations · 16 works
  8. 8 Y.L. Lam · #783,017 worldwide 93 citations · 25 works
  9. 9 Eduardo A. M. Koutsoukos · #793,700 worldwide 117 citations · 20 works
  10. 10 Paulo Johann · #871,130 worldwide 19 citations · 28 works
All ranked researchers at Petrobras (Brazil)

Which keywords describe research at Petrobras (Brazil)?

By fractional works in 2022–2025, weighted toward what it does more of than the world: Optimization, Data Assimilation, Uncertainty Quantification, Ensemble Kalman Filter, Closed-Loop Control, Well Placement, CO2 Sequestration and Machine Learning.

▲ more of its work than of the world’s◆ about the world’s share▼ less than the world’s

Size is fractional works in 2022–2025 in the topics tagged with each word; colour is the word's share of this institution's work against its share of the world's. The 40 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 40 words, with their numbers
  1. Machine Learning116▲ 2.7×38 topics
  2. Optimization103▲ 17×16 topics
  3. Data Assimilation97▲ 47×4 topics
  4. Uncertainty Quantification97▲ 89×2 topics
  5. Ensemble Kalman Filter95▲ 72×2 topics
  6. Closed-Loop Control95▲ 154×1 topic
  7. Well Placement95▲ 154×1 topic
  8. Nanoparticles75▲ 4.5×22 topics
  9. Renewable Energy74▲ 3.9×30 topics
  10. CO2 Sequestration72▲ 29×4 topics
  11. Sustainability69▲ 2.2×28 topics
  12. Vibration Analysis67▲ 19×6 topics
  13. Geophysical Imaging65▲ 91×2 topics
  14. Rheological Properties63▲ 27×5 topics
  15. Inverse Problems63▲ 45×3 topics
  16. Drilling Fluids62▲ 86×1 topic
  17. Well Integrity62▲ 86×1 topic
  18. Environmental Impact62▲ 2.8×29 topics
  19. Elastic Properties61▲ 61×2 topics
  20. Full-Waveform Tomography61▲ 111×1 topic
  21. Seismic Waveform Inversion61▲ 111×1 topic
  22. Hydraulic Fracturing59▲ 41×2 topics
  23. Fracture Propagation56▲ 70×1 topic
  24. Shale Gas Reservoirs56▲ 70×1 topic
  25. Fault Diagnosis48▲ 25×4 topics
  26. Technology47▲ 6.8×4 topics
  27. Predictive Maintenance46▲ 44×3 topics
  28. Oil and Gas46▲ 93×1 topic
  29. Subsea46▲ 371×1 topic
  30. Economic Analysis45▲ 23×5 topics
  31. Marine Pollution44▲ 183×2 topics
  32. Artificial Lift Systems44▲ 115×1 topic
  33. Electric Submersible Pumps44▲ 115×1 topic
  34. Shale Gas43▲ 26×2 topics
  35. Offshore Decommissioning42▲ 351×1 topic
  36. Ship Recycling42▲ 351×1 topic
  37. Gas Permeability41▲ 31×2 topics
  38. Pore Structure40▲ 24×2 topics
  39. Mudstones40▲ 39×1 topic
  40. Thermal Maturity40▲ 39×1 topic

Which research topics does Petrobras (Brazil) publish most on?

By volume in 2022–2025: Reservoir Engineering and Simulation Methods, Drilling and Well Engineering, Seismic Imaging and Inversion Techniques and Hydraulic Fracturing and Reservoir Analysis.

Reservoir Engineering and Simulation Methods: 95 fractional worksDrilling and Well Engineering: 62 fractional worksSeismic Imaging and Inve…61Seismic Imaging and Inversion Techniques: 61 fractional worksHydraulic Fracturing and…56Hydraulic Fracturing and Reservoir Analysis: 56 fractional worksOffshore Engineering and Technologies: 46 fractional worksOil and Gas Production Techniques: 44 fractional worksMarine and Offshore Engi…42Marine and Offshore Engineering Studies: 42 fractional worksHydrocarbon exploration and reservoir analysis: 40 fractional worksGeological formations and processes: 24 fractional worksEnhanced Oil Recovery Techniques: 21 fractional works
Ocean EngineeringGeophysicsMechanical EngineeringMechanics of Materials1 others

Area is fractional works; colour is the subfield each topic belongs to.

  1. 1 Reservoir Engineering and Simulation MethodsOcean Engineering 95 works
  2. 2 Drilling and Well EngineeringOcean Engineering 62 works
  3. 3 Seismic Imaging and Inversion TechniquesGeophysics 61 works
  4. 4 Hydraulic Fracturing and Reservoir AnalysisMechanical Engineering 56 works
  5. 5 Offshore Engineering and TechnologiesOcean Engineering 46 works
  6. 6 Oil and Gas Production TechniquesOcean Engineering 44 works
  7. 7 Marine and Offshore Engineering StudiesOcean Engineering 42 works
  8. 8 Hydrocarbon exploration and reservoir analysisMechanics of Materials 40 works
  9. 9 Geological formations and processesEarth-Surface Processes 24 works
  10. 10 Enhanced Oil Recovery TechniquesOcean Engineering 21 works

How open and international is its research?

Against the world’s own shares — the tick on each track. Both are shares of its output, so they sit on one scale and can be read against each other as well as against the world.

openly available21.6%not open78.4%

World: 28% of research is openly available.

with international co-authors16.7%domestic only83.3%

World: 19% is written across borders.

How has Petrobras (Brazil)'s research output changed?

Output in 2018–2022 was 9% lower than in 2013–2017.

1990200020102020
grewheldshrank

The same series as a ribbon — one cell per year, darker for more. The line above answers how much; this answers when.

Other research institutions in Rio de Janeiro

All research institutions in Rio de Janeiro

Research measures only: rankings here say nothing about teaching, admissions or student experience. Comparable institutions and collaboration partners are in the interactive view on the map.