Science Explorer Back to mapMap
Discussion
Company · Houston · United States

Occidental Petroleum (United States)

In research, Occidental Petroleum (United States) stands highest in Physical Sciences (#8,946 of 10,670 worldwide) and Engineering (#5,562 of 5,901 worldwide), 2022-now. Relative to its size it is most specialised in Ocean Engineering (Ocean Engineering is 62.7× its share of world research).

oxy.com/Pages/default.aspxROR OpenAlex
World rank, 2022-now
#17,130
of 22,385 · #19,639 all time
Rank in United States
#2,494
of 3,332
Research works
843
▲ 5% vs 2018-21
Citations
7.6k
9.0 per fractional work
Top-10% rate
3.9%
all institutions 10.0%
vs its own fields
0.88×
1.00× is exactly expected
Open access
15%
world 40%
International
15%
world 18%
Occidental Petroleum (United States)

What is Occidental Petroleum (United States) known for in research?

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

FieldWorld rankWhere that sitsTop-10% rateWorksAll time
Physical SciencesDomain #8,946 of 10,670 2.5%88 #11908
EngineeringField #5,562 of 5,901 1.6%64 #6425

Each strip is that field's whole ranked pool, with the notch where Occidental Petroleum (United States) 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 average mark, because the average differs by field (from about 6% in Dentistry to 21% in Economics).

Which fields of science does Occidental Petroleum (United States) work in?

In 2022-now, 76% of research at Occidental Petroleum (United States) is in Physical Sciences, 19% in Social Sciences. Its largest fields are Engineering (54%), Social Sciences (11%), Computer Science (8%). It does 1.9× the world's share of Physical Sciences.

Physical Sciences: 95 fractional works · 75.6% of its workEngineering: 68 fractional works · 54.1% of its workOcean Engineering: 41 fractional works · 32.6% of its workMechanical Engineering: 12 fractional works · 9.2% of its workMechanics of Materials: 6 fractional works · 4.7% of its workCivil and Structural Engineering: 2 fractional works · 1.8% of its workControl and Systems Engineering: 2 fractional works · 1.7% of its workElectrical and Electronic Engineering: 2 fractional works · 1.7% of its workSafety, Risk, Reliability and Quality: 1 fractional works · 0.8% of its workBiomedical Engineering: 1 fractional works · 0.5% of its workMedia Technology: 0 fractional works · 0.4% of its workAerospace Engineering: 0 fractional works · 0.3% of its workSmaller subfields together: 1 fractional works · 0.4% of its workComputer Science: 10 fractional works · 7.6% of its workInformation Systems: 6 fractional works · 4.4% of its workArtificial Intelligence: 3 fractional works · 2.1% of its workComputer Science Applications: 0 fractional works · 0.4% of its workComputer Networks and Communications: 0 fractional works · 0.3% of its workSignal Processing: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.2% of its workEarth and Planetary Sciences: 9 fractional works · 7.2% of its workGeophysics: 6 fractional works · 4.5% of its workGeochemistry and Petrology: 1 fractional works · 1.0% of its workEarth-Surface Processes: 1 fractional works · 1.0% of its workPaleontology: 0 fractional works · 0.3% of its workGeology: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.1% of its workEnvironmental Science: 6 fractional works · 4.9% of its workEnvironmental Engineering: 3 fractional works · 2.5% of its workHealth, Toxicology and Mutagenesis: 1 fractional works · 0.8% of its workWater Science and Technology: 1 fractional works · 0.7% of its workGlobal and Planetary Change: 1 fractional works · 0.5% of its workSmaller subfields together: 0 fractional works · 0.4% of its workChemistry: 1 fractional works · 0.5% of its workAnalytical Chemistry: 1 fractional works · 0.5% of its workMathematics: 1 fractional works · 0.4% of its workApplied Mathematics: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.2% of its workPhysics and Astronomy: 0 fractional works · 0.3% of its workMaterials Science: 0 fractional works · 0.3% of its workEnergy: 0 fractional works · 0.2% of its workChemical Engineering: 0 fractional works · 0.0% of its workSocial Sciences: 24 fractional works · 18.7% of its workSocial Sciences: 14 fractional works · 11.2% of its workEducation: 9 fractional works · 7.5% of its workSociology and Political Science: 2 fractional works · 1.9% of its workGender Studies: 1 fractional works · 0.5% of its workPolitical Science and International Relations: 0 fractional works · 0.4% of its workCultural Studies: 0 fractional works · 0.3% of its workHuman Factors and Ergonomics: 0 fractional works · 0.3% of its workPublic Administration: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.2% of its workBusiness, Management and Accounting: 3 fractional works · 2.1% of its workManagement Information Systems: 1 fractional works · 0.5% of its workOrganizational Behavior and Human Resource Management: 1 fractional works · 0.5% of its workAccounting: 0 fractional works · 0.4% of its workManagement of Technology and Innovation: 0 fractional works · 0.4% of its workStrategy and Management: 0 fractional works · 0.3% of its workPsychology: 2 fractional works · 1.8% of its workDevelopmental and Educational Psychology: 1 fractional works · 0.7% of its workSocial Psychology: 1 fractional works · 0.7% of its workExperimental and Cognitive Psychology: 1 fractional works · 0.4% of its workDecision Sciences: 2 fractional works · 1.7% of its workManagement Science and Operations Research: 1 fractional works · 0.9% of its workStatistics, Probability and Uncertainty: 1 fractional works · 0.7% of its workArts and Humanities: 2 fractional works · 1.4% of its workHistory and Philosophy of Science: 1 fractional works · 0.5% of its workPhilosophy: 1 fractional works · 0.5% of its workHistory: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.2% of its workEconomics, Econometrics and Finance: 1 fractional works · 0.5% of its workEconomics and Econometrics: 0 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.1% of its workHealth Sciences: 5 fractional works · 4.2% of its workMedicine: 3 fractional works · 2.2% of its workPublic Health, Environmental and Occupational Health: 1 fractional works · 0.6% of its workObstetrics and Gynecology: 1 fractional works · 0.5% of its workSmaller subfields together: 1 fractional works · 1.2% of its workHealth Professions: 2 fractional works · 1.4% of its workPhysical Therapy, Sports Therapy and Rehabilitation: 1 fractional works · 0.8% of its workGeneral Health Professions: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.4% of its workDentistry: 1 fractional works · 0.4% of its workVeterinary: 0 fractional works · 0.1% of its workLife Sciences: 2 fractional works · 1.5% of its workAgricultural and Biological Sciences: 1 fractional works · 1.0% of its workGeneral Agricultural and Biological Sciences: 1 fractional works · 0.4% of its workEcology, Evolution, Behavior and Systematics: 0 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.1% of its workBiochemistry, Genetics and Molecular Biology: 0 fractional works · 0.4% of its workImmunology and Microbiology: 0 fractional works · 0.1% of its workNeuroscience: 0 fractional works · 0.1% of its workALL ITS WORKOccidentalPetroleum (Unite…126fractional works, 2022-now
Life Sciences2%Physical Sciences76%Health Sciences4%Social Sciences19%

Each ring splits the one inside it: the four domains of science, their fields, their subfields. Size is fractional works in 2022-now. Every slice is a page; the interactive view zooms down to single topics and colours each by how much more of it this institution does than the world.

Its 4 domains and 24 fields, with their numbers
    1. Engineering6854.1%
    2. Computer Science107.6%
    3. Earth and Planetary Sciences97.2%
    4. Environmental Science64.9%
    5. Chemistry10.5%
    6. Mathematics10.4%
    7. Physics and Astronomy00.3%
    8. Materials Science00.3%
    9. Energy00.2%
    10. Chemical Engineering00.0%
    1. Social Sciences1411.2%
    2. Business, Management and Accounting32.1%
    3. Psychology21.8%
    4. Decision Sciences21.7%
    5. Arts and Humanities21.4%
    6. Economics, Econometrics and Finance10.5%
    1. Medicine32.2%
    2. Health Professions21.4%
    3. Dentistry10.4%
    4. Veterinary00.1%
    1. Agricultural and Biological Sciences11.0%
    2. Biochemistry, Genetics and Molecular Biology00.4%
    3. Immunology and Microbiology00.1%
    4. Neuroscience00.1%
All of science, and how each field's share has moved since 1950: the Science domain explorer

What does Occidental Petroleum (United States) specialise in?

Where its research is concentrated relative to its size: Ocean Engineering takes 62.7× the share of its output that it takes of world research.

  1. Ocean EngineeringSubfield · 41.1 works63×
← 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: 0.21× its world share, 1 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.07× its world share, 0 worksBiochemistry, Geneti…Immunology and Microbiology: 0.13× its world share, 0 worksImmunology and Micro…Neuroscience: 0.04× its world share, 0 worksNeuroscienceChemical Engineering: 0.08× its world share, 0 worksChemical EngineeringChemistry: 0.35× its world share, 1 worksChemistryComputer Science: 0.97× its world share, 10 worksComputer ScienceEarth and Planetary Sciences: 4.58× its world share, 9 worksEarth and Planetary …Energy: 0.22× its world share, 0 worksEnergyEngineering: 3.61× its world share, 68 worksEngineeringEnvironmental Science: 0.98× its world share, 6 worksEnvironmental ScienceMaterials Science: 0.10× its world share, 0 worksMaterials ScienceMathematics: 0.37× its world share, 1 worksMathematicsPhysics and Astronomy: 0.16× its world share, 0 worksPhysics and AstronomyDentistry: 0.91× its world share, 1 worksDentistryHealth Professions: 0.54× its world share, 2 worksHealth ProfessionsMedicine: 0.12× its world share, 3 worksMedicineVeterinary: 0.49× its world share, 0 worksVeterinaryArts and Humanities: 0.48× its world share, 2 worksArts and HumanitiesBusiness, Management and Accounting: 0.66× its world share, 3 worksBusiness, Management…Decision Sciences: 1.73× its world share, 2 worksDecision SciencesEconomics, Econometrics and Finance: 0.25× its world share, 1 worksEconomics, Econometr…Psychology: 0.59× its world share, 2 worksPsychologySocial Sciences: 0.89× its world share, 14 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Earth and Planetary Sciences, 4.6×. Every wedge is a field page.

All 24 fields, with their numbers
  1. Earth and Planetary Sciences4.58×9 works
  2. Engineering3.61×68 works
  3. Decision Sciences1.73×2 works
  4. Environmental Science0.98×6 works
  5. Computer Science0.97×10 works
  6. Dentistry0.91×1 works
  7. Social Sciences0.89×14 works
  8. Business, Management and Accounting0.66×3 works
  9. Psychology0.59×2 works
  10. Health Professions0.54×2 works
  11. Veterinary0.49×0 works
  12. Arts and Humanities0.48×2 works
  13. Mathematics0.37×1 works
  14. Chemistry0.35×1 works
  15. Economics, Econometrics and Finance0.25×1 works
  16. Energy0.22×0 works
  17. Agricultural and Biological Sciences0.21×1 works
  18. Physics and Astronomy0.16×0 works
  19. Immunology and Microbiology0.13×0 works
  20. Medicine0.12×3 works
  21. Materials Science0.10×0 works
  22. Chemical Engineering0.08×0 works
  23. Biochemistry, Genetics and Molecular Biology0.07×0 works
  24. Neuroscience0.04×0 works

Who are the top researchers at Occidental Petroleum (United States)?

Ranked on the quality score, B. V. K. S. R. A. Tilak, David R. D. Boote and R.W. II Potter lead among researchers whose main affiliation is Occidental Petroleum (United States).

  1. 1 B. V. K. S. R. A. Tilak United States · #779,332 worldwide 4.9k citations · 69 works
  2. 2 David R. D. Boote United States · #1,607,601 worldwide 714 citations · 15 works
  3. 3 R.W. II Potter United States · #2,220,452 worldwide 955 citations · 16 works
  4. 4 Willis T. Schwartz United States · #2,687,074 worldwide 312 citations · 18 works
  5. 5 Gert E. Olsen United States · #2,949,046 worldwide 2k citations · 102 works
  6. 6 EDWARD A. JUN. DIETZ United States · #3,922,746 worldwide 346 citations · 26 works
  7. 7 S.A. Qader United States · #3,925,756 worldwide 283 citations · 36 works
  8. 8 James J. Duffy United States · #4,078,926 worldwide 179 citations · 16 works
  9. 9 Dingzhou Cao United States · #4,162,532 worldwide 348 citations · 21 works
  10. 10 Stewart Raynor Wallace United States · #4,216,474 worldwide 117 citations · 18 works
All ranked researchers at Occidental Petroleum (United States)

What are the most cited papers from Occidental Petroleum (United States)?

The most cited paper from Occidental Petroleum (United States) is "Materials for Electrochemical Capacitors: Theoretical and Experimental Constraints" (S. Sarangapani, B. V. K. S. R. A. Tilak, C.‐P. Chen, 1996), with 660 citations. Next come "“DISCURSO SOBRE O COLONIALISMO (1950)”" (586) and "An equation correlating the solubility of quartz in water from 25° to 900°C at pressures up to 10,000 bars" (419).

Most cited papers
#PaperReleasedCitations
1 Materials for Electrochemical Capacitors: Theoretical and Experimental Constraints S. Sarangapani, B. V. K. S. R. A. Tilak, C.‐P. Chen · Journal of The Electrochemical Society Open access Nov 1996 660
2 “DISCURSO SOBRE O COLONIALISMO (1950)” Mariana Affonso Penna, Marcos Rafael Andrade de Melo · Revista de Estudos de Cultura Open access 27 Jan 2022 586
3 An equation correlating the solubility of quartz in water from 25° to 900°C at pressures up to 10,000 bars Robert Orville Fournier, Robert W. Potter · Geochimica et Cosmochimica Acta Oct 1982 419
4 Palaeozoic petroleum systems of North Africa David R. D. Boote, Daniel D. Clark-Lowes, Marc W. Traut · Geological Society London Special Publications 1998 279
5 Foam Mobility Control for Surfactant Enhanced Oil Recovery Robert Feng Li, Wei Jin Yan, Shunhua Liu et al. · SPE Journal 21 Jul 2010 258
All 60 most cited papers, with filters and sorting

Which keywords describe research at Occidental Petroleum (United States)?

By fractional works in 2022-now, weighted toward what it does more of than the world: Optimization, Data Assimilation, Ensemble Kalman Filter, CO2 Sequestration, Hydraulic Fracturing, Predictive Maintenance, Fracture Propagation and Shale Gas Reservoirs.

▲ 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-now 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. Optimization16▲ 28×2 topics
  2. Data Assimilation15▲ 74×1 topic
  3. Ensemble Kalman Filter15▲ 119×1 topic
  4. Machine Learning15▲ 3.5×14 topics
  5. CO2 Sequestration11▲ 43×3 topics
  6. Hydraulic Fracturing10▲ 78×2 topics
  7. Fracture Propagation10▲ 135×1 topic
  8. Predictive Maintenance10▲ 110×2 topics
  9. Shale Gas Reservoirs10▲ 135×1 topic
  10. Artificial Lift Systems10▲ 292×1 topic
  11. Fault Diagnosis10▲ 56×1 topic
  12. Nanoparticles8▲ 5.2×3 topics
  13. Drilling Fluids8▲ 122×1 topic
  14. Well Integrity8▲ 122×1 topic
  15. Educational Technology8▲ 5.0×12 topics
  16. E-Learning6▲ 4.9×7 topics
  17. Online Learning6▲ 5.3×5 topics
  18. Shale Gas5▲ 33×2 topics
  19. Mudstones5▲ 51×1 topic
  20. Pore Structure5▲ 30×1 topic
  21. Technology Integration5▲ 11×6 topics
  22. Porous Media4▲ 26×3 topics
  23. Pore-scale Modeling4▲ 86×1 topic
  24. X-ray Computed Tomography4▲ 86×1 topic
  25. Student Satisfaction4▲ 16×2 topics
  26. Elastic Properties4▲ 36×2 topics
  27. Geophysical Imaging4▲ 52×2 topics
  28. Technology4▲ 5.3×4 topics
  29. Full-Waveform Tomography3▲ 65×1 topic
  30. Seismic Waveform Inversion3▲ 65×1 topic
  31. Reactive Transport3▲ 44×2 topics
  32. Digital Literacy3▲ 4.2×4 topics
  33. Carbon Capture2▲ 41×1 topic
  34. Geological Storage2▲ 60×1 topic
  35. Blended Learning2▲ 14×2 topics
  36. Distance Education2▲ 9.5×2 topics
  37. Teacher Professional Development2▲ 11×4 topics
  38. Professional Development2▲ 8.3×2 topics
  39. Community of Inquiry2▲ 29×1 topic
  40. Tomography2▲ 9.2×3 topics

Which research topics does Occidental Petroleum (United States) publish most on?

By volume in 2022-now: Reservoir Engineering and Simulation Methods, Hydraulic Fracturing and Reservoir Analysis, Oil and Gas Production Techniques and Drilling and Well Engineering.

Reservoir Engineering an…15Reservoir Engineering and Simulation Methods: 15 fractional worksHydraulic Fracturing and Reservoir Analysis: 10 fractional worksOil and Gas Production Techniques: 10 fractional worksDrilling and Well Engineering: 8 fractional worksHydrocarbon exploration and reservoir analysis: 5 fractional worksEnhanced Oil Recovery Te…4Enhanced Oil Recovery Techniques: 4 fractional worksSeismic Imaging and Inversion Techniques: 3 fractional worksCO2 Sequestration and Geologic Interactions: 2 fractional worksOnline and Blended Learning: 2 fractional worksOffshore Engineering and Technologies: 2 fractional works
Ocean EngineeringMechanical EngineeringMechanics of MaterialsGeophysics2 others

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

  1. 1 Reservoir Engineering and Simulation Methods Ocean Engineering 15 works
  2. 2 Hydraulic Fracturing and Reservoir Analysis Mechanical Engineering 10 works
  3. 3 Oil and Gas Production Techniques Ocean Engineering 10 works
  4. 4 Drilling and Well Engineering Ocean Engineering 8 works
  5. 5 Hydrocarbon exploration and reservoir analysis Mechanics of Materials 5 works
  6. 6 Enhanced Oil Recovery Techniques Ocean Engineering 4 works
  7. 7 Seismic Imaging and Inversion Techniques Geophysics 3 works
  8. 8 CO2 Sequestration and Geologic Interactions Environmental Engineering 2 works
  9. 9 Online and Blended Learning Education 2 works
  10. 10 Offshore Engineering and Technologies Ocean Engineering 2 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 available14.6%not open85.4%

World: 40% of research is openly available.

with international co-authors14.6%domestic only85.4%

World: 18% is written across borders.

How has Occidental Petroleum (United States)'s research output changed?

Output in 2022-2025 was 5% higher than in 2018-2021.

still counting1990200020102020
grewheldshrank

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

Its share of all research

Growing output can still be a shrinking share: all of science grows. This is Occidental Petroleum (United States) as a percentage of every work published that year, 0.00063% in 2024.

still counting0.0050%0.010%Occidental Petroleum (United States)0.00058% in 202519801990200020102020

Fractional works of Occidental Petroleum (United States) over all fractional works that year. How the balance of science has shifted.

How much of it reaches the world top 10%

Year by year, against all institutions in the same year.

still counting5%10%15%all institutions10.0% in 2025Occidental Petroleum (United States)4.3% in 202520102020

Of each year's output, the share that reached the world's 10% most cited for its field and year. Peak 8.2% in 2019.

Other research institutions in Houston

All research institutions in Houston

Share Occidental Petroleum (United States)'s ranking

Occidental Petroleum (United States) on Science Explorer

A card with Occidental Petroleum (United States)'s standing and the fields it leads in, for a post or a slide. A link to this page previews as the same card.

Download the card

1200 × 630 PNG, sized for social posts, drawn from the latest snapshot.

Badges for a website1Each links back here and updates with every snapshot

Research measures only: rankings here say nothing about teaching, admissions or student experience. Comparable institutions and collaboration partners have tabs of their own, above.

Discussion

Ask a question or share a note about Occidental Petroleum (United States). Keep it to the research: no personal attacks, advertising or links. Any reader can report a post, which collapses it for everyone until it is opened.