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National Oilwell Varco (United States)

In research, National Oilwell Varco (United States) stands highest in Engineering (#7,145 of 11,412 worldwide), Physical Sciences (#13,690 of 21,541 worldwide) and Ocean Engineering (#535 of 839 worldwide), over all time. Relative to its size it is most specialised in Ocean Engineering, Engineering and Physical Sciences — Ocean Engineering is 83.5× its share of world research.

nov.comROR OpenAlex
World rank, all time
#21,989
of 42,892
Rank in United States
#4,733
of 8,685
Research works
459
▼ 52% vs 2013–17
Citations
3.4k
7.5 per fractional work
Top-10% rate
13.0%
record average 16.5%
Open access
13%
world 28%

What is National Oilwell Varco (United States) known for in research?

The fields where it stands highest, over all time, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorks
EngineeringField #7,145 of 11,412 11.6%344
Physical SciencesDomain #13,690 of 21,541 11.4%399
Ocean EngineeringSubfield #535 of 839 11.3%199

Each strip is that field’s whole ranked pool, with the notch where National Oilwell Varco (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 world mark, because the world rate differs by field (from about 6% to 21% in this record).

What does National Oilwell Varco (United States) specialise in?

Where its research is concentrated relative to its size: Ocean Engineering takes 83.5× the share of its output that it takes of world research.

  1. Ocean EngineeringSubfield · 22.6 works84×
  2. EngineeringField · 42.0 works5.4×
  3. Physical SciencesDomain · 46.8 works2.3×
← 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: 0.20× its world share, 0 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.18× its world share, 0 worksBiochemistry, Geneti…Immunology and Microbiology: 0.32× its world share, 0 worksImmunology and Micro…Chemical Engineering: 2.14× its world share, 0 worksChemical EngineeringChemistry: 0.54× its world share, 0 worksChemistryComputer Science: 0.09× its world share, 0 worksComputer ScienceEarth and Planetary Sciences: 1.12× its world share, 1 worksEarth and Planetary …Energy: 1.57× its world share, 1 worksEnergyEngineering: 5.39× its world share, 42 worksEngineeringEnvironmental Science: 0.45× its world share, 1 worksEnvironmental ScienceMaterials Science: 0.21× its world share, 0 worksMaterials ScienceMathematics: 0.54× its world share, 0 worksMathematicsDentistry: 1.98× its world share, 0 worksDentistryHealth Professions: 0.36× its world share, 0 worksHealth ProfessionsMedicine: 0.30× its world share, 3 worksMedicineEconomics, Econometrics and Finance: 0.07× its world share, 0 worksEconomics, Econometr…1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Engineering, 5.4×. Every wedge is a field page.

Which keywords describe research at National Oilwell Varco (United States)?

By fractional works in 2022–2025, weighted toward what it does more of than the world: Machine Learning, CO2 Sequestration, Nanoparticles, Drilling Fluids, Well Integrity, Predictive Maintenance, Artificial Lift Systems and Fault Diagnosis.

▲ 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 31 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 31 words, with their numbers
  1. Machine Learning11▲ 6.3×6 topics
  2. CO2 Sequestration9▲ 93×2 topics
  3. Nanoparticles9▲ 14×2 topics
  4. Drilling Fluids9▲ 320×1 topic
  5. Well Integrity9▲ 320×1 topic
  6. Predictive Maintenance8▲ 190×2 topics
  7. Artificial Lift Systems8▲ 490×1 topic
  8. Fault Diagnosis8▲ 99×1 topic
  9. Hydraulic Fracturing4▲ 77×1 topic
  10. Shale Gas Reservoirs4▲ 140×1 topic
  11. Optimization4▲ 15×2 topics
  12. Data Assimilation4▲ 43×1 topic
  13. Ensemble Kalman Filter4▲ 66×1 topic
  14. Renewable Energy3▲ 4.3×8 topics
  15. Numerical Simulation3▲ 20×3 topics
  16. Risk Assessment3▲ 8.8×3 topics
  17. Performance Prediction3▲ 83×2 topics
  18. TBM3▲ 194×1 topic
  19. rock fragmentation3▲ 194×1 topic
  20. Industrial Automation2▲ 70×2 topics
  21. Energy Efficiency2▲ 4.8×5 topics
  22. Flexible Automation2▲ 152×1 topic
  23. Reconfigurable Manufacturing Systems2▲ 152×1 topic
  24. Sustainability2▲ 1.27×4 topics
  25. Oil and Gas1▲ 66×1 topic
  26. Subsea1▲ 264×1 topic
  27. Composite Materials1▲ 10×2 topics
  28. Discrete Particle Simulation1▲ 108×1 topic
  29. Granular Flows1▲ 108×1 topic
  30. Surface Roughness1▲ 15×2 topics
  31. Cyber-Physical Systems1▲ 7.3×2 topics

Which research topics does National Oilwell Varco (United States) publish most on?

By volume in 2022–2025: Drilling and Well Engineering, Oil and Gas Production Techniques, Hydraulic Fracturing and Reservoir Analysis and Reservoir Engineering and Simulation Methods.

Drilling and Well Engine…9Drilling and Well Engineering: 9 fractional worksOil and Gas Production T…8Oil and Gas Production Techniques: 8 fractional worksHydraulic Fracturing and…4Hydraulic Fracturing and Reservoir Analysis: 4 fractional worksReservoir Engineering an…4Reservoir Engineering and Simulation Methods: 4 fractional worksTunneling and Rock Mechanics: 3 fractional worksFlexible and Reconfigurable Manufacturing Systems: 2 fractional worksOffshore Engineering and Technologies: 1 fractional worksGranular flow and fluidized beds: 1 fractional worksIndustrial Engineering and Technologies: 1 fractional worksAdvanced machining processes and optimization: 1 fractional works
Ocean EngineeringMechanical EngineeringCivil and Structural EngineeringIndustrial and Manufacturing Engineering1 others

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

  1. 1 Drilling and Well Engineering Ocean Engineering 9 works
  2. 2 Oil and Gas Production Techniques Ocean Engineering 8 works
  3. 3 Hydraulic Fracturing and Reservoir Analysis Mechanical Engineering 4 works
  4. 4 Reservoir Engineering and Simulation Methods Ocean Engineering 4 works
  5. 5 Tunneling and Rock Mechanics Civil and Structural Engineering 3 works
  6. 6 Flexible and Reconfigurable Manufacturing Systems Industrial and Manufacturing Engineering 2 works
  7. 7 Offshore Engineering and Technologies Ocean Engineering 1 works
  8. 8 Granular flow and fluidized beds Computational Mechanics 1 works
  9. 9 Industrial Engineering and Technologies Mechanical Engineering 1 works
  10. 10 Advanced machining processes and optimization Mechanical Engineering 1 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 available12.6%not open87.4%

World: 28% of research is openly available.

with international co-authors22.5%domestic only77.5%

World: 19% is written across borders.

How has National Oilwell Varco (United States)'s research output changed?

Output in 2018–2022 was 52% 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.

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.