Discover the world’s highly cited researchers through the AD Scientific Index 2025 Citation Rankings.
These rankings evaluate scientists based on their total and recent citation counts, capturing the breadth and real-time currency of academic recognition. Citation data reveals how widely a scholar’s work is referenced, applied, and extended across diverse disciplines. The rankings are routinely updated to reflect ongoing citation growth, while eliminating distortions from excessive co-authorship and institutional inflation. Premium tools provide access to detailed citation dynamics, unethical citation behavior detection, and field-normalized benchmarking.
* Total Citation Rankings
Rankings

224,872
World Rank

861
Country Rank

5
University
Ranking Based On Selection:
1
Engineering & Technology / Petroleum Engineering
petroleum engineering | enhanced oil recovery | CO2 | phase behavior | PV
petroleum engineering | enhanced oil recovery | CO2 | phase behavior | PV
Citation Metrics
-
Total4,846
-
Last 6 Years1,834
-
Last 6 Years / Total0.378
* Total Citation Rankings
Rankings

254,937
World Rank

1,021
Country Rank

8
University
Ranking Based On Selection:
2
Citation Metrics
-
Total4,232
-
Last 6 Years1,356
-
Last 6 Years / Total0.320
* Total Citation Rankings
Rankings

453,923
World Rank

2,224
Country Rank

31
University
Ranking Based On Selection:
3
Citation Metrics
-
Total2,069
-
Last 6 Years1,049
-
Last 6 Years / Total0.507
* Total Citation Rankings
Rankings

463,485
World Rank

2,294
Country Rank

32
University
Ranking Based On Selection:
4
Engineering & Technology / Petroleum Engineering
Flow in Porous Media | Reservoir Simulation | Enhanced Oil Recover
Flow in Porous Media | Reservoir Simulation | Enhanced Oil Recover
Citation Metrics
-
Total2,009
-
Last 6 Years1,433
-
Last 6 Years / Total0.713
* Total Citation Rankings
Rankings

488,318
World Rank

2,474
Country Rank

37
University
Ranking Based On Selection:
5
Engineering & Technology / Petroleum Engineering
Oil field chemicals | Drilling fluid additives | Lost circulation material
Oil field chemicals | Drilling fluid additives | Lost circulation material
Citation Metrics
-
Total1,864
-
Last 6 Years1,033
-
Last 6 Years / Total0.554
* Total Citation Rankings
Rankings

582,685
World Rank

3,080
Country Rank

53
University
Ranking Based On Selection:
6
Citation Metrics
-
Total1,414
-
Last 6 Years1,111
-
Last 6 Years / Total0.786
* Total Citation Rankings
Rankings

717,730
World Rank

4,089
Country Rank

74
University
Ranking Based On Selection:
7
Citation Metrics
-
Total971
-
Last 6 Years189
-
Last 6 Years / Total0.195
* Total Citation Rankings
Rankings

720,846
World Rank

4,115
Country Rank

76
University
Ranking Based On Selection:
8
Engineering & Technology / Petroleum Engineering
Uncertainty Quantification | EOR | Decision Making | Real Options Theory | Dynamic Programmin
Uncertainty Quantification | EOR | Decision Making | Real Options Theory | Dynamic Programmin
Citation Metrics
-
Total962
-
Last 6 Years832
-
Last 6 Years / Total0.865
* Total Citation Rankings
Rankings

779,523
World Rank

4,550
Country Rank

89
University
Ranking Based On Selection:
9
Engineering & Technology / Petroleum Engineering
Petroleum Engineering | Energy Markets and Economics | Artificial Intelligenc
Petroleum Engineering | Energy Markets and Economics | Artificial Intelligenc
Citation Metrics
-
Total816
-
Last 6 Years396
-
Last 6 Years / Total0.485
* Total Citation Rankings
Rankings

818,883
World Rank

4,859
Country Rank

93
University
Ranking Based On Selection:
10
Engineering & Technology / Petroleum Engineering
Reservoir & Production: Inflow performance | water control | condensate banking | PVT Hydrocarbon Phase Behavio
Reservoir & Production: Inflow performance | water control | condensate banking | PVT Hydrocarbon Phase Behavio
Citation Metrics
-
Total729
-
Last 6 Years328
-
Last 6 Years / Total0.450
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* Total Citation Rankings
Rankings

927,271
World Rank

5,616
Country Rank

114
University
Ranking Based On Selection:
11
Engineering & Technology / Petroleum Engineering
Wireless Communications | wireless underground sensor networks | in-suite sensing methodologies and applications for monitoring o
Wireless Communications | wireless underground sensor networks | in-suite sensing methodologies and applications for monitoring o
Citation Metrics
-
Total540
-
Last 6 Years409
-
Last 6 Years / Total0.757
* Total Citation Rankings
Rankings

1,013,051
World Rank

6,192
Country Rank

128
University
Ranking Based On Selection:
12
Engineering & Technology / Petroleum Engineering
Petroleum engineering | technology | oil and gas | economy | energ
Petroleum engineering | technology | oil and gas | economy | energ
Citation Metrics
-
Total440
-
Last 6 Years308
-
Last 6 Years / Total0.700
* Total Citation Rankings
Rankings

1,058,731
World Rank

6,520
Country Rank

130
University
Ranking Based On Selection:
13
Engineering & Technology / Petroleum Engineering
Petroleum Engineering | Drilling Geomechanics | Wellbore stabilit
Petroleum Engineering | Drilling Geomechanics | Wellbore stabilit
Citation Metrics
-
Total394
-
Last 6 Years360
-
Last 6 Years / Total0.914
* Total Citation Rankings
Rankings

1,114,953
World Rank

7,060
Country Rank

134
University
Ranking Based On Selection:
14
Engineering & Technology / Petroleum Engineering
SmartWater Flooding | Enhanced Oil Recovery | Digital Rock Physics | Petrophysics | and fluid flow in porous medi
SmartWater Flooding | Enhanced Oil Recovery | Digital Rock Physics | Petrophysics | and fluid flow in porous medi
Citation Metrics
-
Total345
-
Last 6 Years235
-
Last 6 Years / Total0.681
* Total Citation Rankings
Rankings

1,148,695
World Rank

7,448
Country Rank

137
University
Ranking Based On Selection:
15
Citation Metrics
-
Total319
-
Last 6 Years215
-
Last 6 Years / Total0.674
* Total Citation Rankings
Rankings

1,196,475
World Rank

8,028
Country Rank

140
University
Ranking Based On Selection:
16
Citation Metrics
-
Total287
-
Last 6 Years177
-
Last 6 Years / Total0.617
* Total Citation Rankings
Rankings

1,347,561
World Rank

9,280
Country Rank

144
University
Ranking Based On Selection:
17
Citation Metrics
-
Total210
-
Last 6 Years44
-
Last 6 Years / Total0.210
* Total Citation Rankings
Rankings

1,404,067
World Rank

9,734
Country Rank

148
University
Ranking Based On Selection:
18
Engineering & Technology / Petroleum Engineering
Petroleum Engineering | Artificial Lift | ESPs | Well Intervetions and Completions | Data Analytic
Petroleum Engineering | Artificial Lift | ESPs | Well Intervetions and Completions | Data Analytic
Citation Metrics
-
Total188
-
Last 6 Years139
-
Last 6 Years / Total0.739
* Total Citation Rankings
Rankings

1,551,927
World Rank

10,832
Country Rank

155
University
Ranking Based On Selection:
19
Engineering & Technology / Petroleum Engineering
hydrocarbon recovery processes optimization | realtime data stream minin
hydrocarbon recovery processes optimization | realtime data stream minin
Citation Metrics
-
Total142
-
Last 6 Years53
-
Last 6 Years / Total0.373
* Total Citation Rankings
Rankings

1,596,662
World Rank

11,136
Country Rank

158
University
Ranking Based On Selection:
20
Citation Metrics
-
Total130
-
Last 6 Years83
-
Last 6 Years / Total0.638
* Total Citation Rankings
Rankings

1,684,660
World Rank

11,833
Country Rank

164
University
Ranking Based On Selection:
21
Engineering & Technology / Petroleum Engineering
Hydraulic Fracturing | unconventional resources | geomechanic
Hydraulic Fracturing | unconventional resources | geomechanic
Citation Metrics
-
Total109
-
Last 6 Years81
-
Last 6 Years / Total0.743
* Total Citation Rankings
Rankings

1,803,734
World Rank

12,739
Country Rank

168
University
Ranking Based On Selection:
22
Engineering & Technology / Petroleum Engineering
Petroleum Engineering | Reservoir Simulation | Well Testing | Field Development | Artificia
Petroleum Engineering | Reservoir Simulation | Well Testing | Field Development | Artificia
Citation Metrics
-
Total85
-
Last 6 Years76
-
Last 6 Years / Total0.894
* Total Citation Rankings
Rankings

1,825,106
World Rank

12,887
Country Rank

169
University
Ranking Based On Selection:
23
Engineering & Technology / Petroleum Engineering
Sustainability | Water Shutoff | Stimulation | Hydraulic Fracturin
Sustainability | Water Shutoff | Stimulation | Hydraulic Fracturin
Citation Metrics
-
Total81
-
Last 6 Years79
-
Last 6 Years / Total0.975
* Total Citation Rankings
Rankings

1,833,319
World Rank

12,952
Country Rank

170
University
Ranking Based On Selection:
24
Engineering & Technology / Petroleum Engineering
Flow Assurance | Scale Mitigation | Acid and Fracturing Stimulatio
Flow Assurance | Scale Mitigation | Acid and Fracturing Stimulatio
Citation Metrics
-
Total80
-
Last 6 Years51
-
Last 6 Years / Total0.638
* Total Citation Rankings
Rankings

1,835,881
World Rank

12,968
Country Rank

171
University
Ranking Based On Selection:
25
Engineering & Technology / Petroleum Engineering
Chemical Synthesis | Sustainable Oilfields Chemicals | Wellbore Isolation | Loss circulation
Chemical Synthesis | Sustainable Oilfields Chemicals | Wellbore Isolation | Loss circulation
Citation Metrics
-
Total79
-
Last 6 Years79
-
Last 6 Years / Total1.000