Productivity Rankings is an exclusive service provided by AD Scientific Index. This ranking system, derived from the i10 index, highlights the productivity of scientists in publishing impactful scientific articles. Productivity Rankings serves as a tool to identify highly productive scientists across specific areas, disciplines, universities, and countries, and supports the creation of effective incentives and academic policies. The global, regional, and institutional rankings of scientists in this table are calculated based on their total i10 index. Moreover, you can explore special rankings derived from Productivity Rankings, such as Scientists Last 6 Years' i10 Index, Universities Total i10 Index Rankings 2025, Universities Last 6 Years' i10 Index Rankings 2025, Art and Humanities i10 Productivity Rankings, and Social Sciences and Humanities i10 Productivity Rankings.
* Total i10 IndexRankings
Ranking Based On Selection :1
petroleum engineering
hydraulic fracturing
formation damage
water injection
production engineering
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
581
388
0.668
* Total i10 IndexRankings
Ranking Based On Selection :2
Petroleum Engineering
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
452
291
0.644
* Total i10 IndexRankings
Ranking Based On Selection :3
Petroleum Engineering
Reservoir Simulation
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
440
300
0.682
* Total i10 IndexRankings
Ranking Based On Selection :4
coal petrology
fly ash petrology
coal geochemistry
coal maceral origins
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
424
294
0.693
* Total i10 IndexRankings
Ranking Based On Selection :5
petroleum engineering
reservoir engineering
enhanced oil recovery
reservoir simulation
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
370
226
0.611
* Total i10 IndexRankings
Ranking Based On Selection :6
mineralogy
astrobiology
astrochemistry
petrology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
336
237
0.705
* Total i10 IndexRankings
Ranking Based On Selection :7
reservoir engineering
enhanced oil recovery
petroleum engineering
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
262
143
0.546
* Total i10 IndexRankings
Ranking Based On Selection :8
petroleum engineering
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
240
199
0.829
* Total i10 IndexRankings
Ranking Based On Selection :9
petroleum engineering
chemical engineering
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
239
186
0.778
* Total i10 IndexRankings
Ranking Based On Selection :10
Reservoir dynamics & simulation
coupled processes of fluid/heat/geomechanics in reservoirs
fractured reservoirs
CO2-EOR
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
224
134
0.598
* Total i10 IndexRankings
Ranking Based On Selection :11
Igneous petrology
Experimental Petrology
Geochemistry
Mineralogy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
215
156
0.726
* Total i10 IndexRankings
Ranking Based On Selection :12
Stimulation
Hydraulic Fracturing
Simulation
Fluid Flow
Conformance Application
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
194
102
0.526
* Total i10 IndexRankings
Ranking Based On Selection :13
Multiphase Flow in Pipes
Flow Assurance
Horizontal Wells
Artificial Lift
Petroleum Engineering
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
182
145
0.797
* Total i10 IndexRankings
Ranking Based On Selection :14
Inverse theory
optimization
uncertainty quantification
reservoir simulation
data assimilation
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
179
109
0.609
* Total i10 IndexRankings
Ranking Based On Selection :15
petroleum engineering
surfactant flooding
hydrogen and CO2 storage
gel
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
177
121
0.684
* Total i10 IndexRankings
Ranking Based On Selection :16
rock mechanics
drilling hydraulics
optimization
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
172
117
0.680
* Total i10 IndexRankings
Ranking Based On Selection :17
petrophysics
rock physics
geomechanics
seismics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
163
106
0.650
* Total i10 IndexRankings
Ranking Based On Selection :18
stimulation
drilling
coiled tubing
completion
petroleum eng
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
162
100
0.617
* Total i10 IndexRankings
Ranking Based On Selection :19
Interface & Colloid Science
Geosystems Engineering
Enhanced Oil Recovery
Carbon Utilization & Storage
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
155
135
0.871
* Total i10 IndexRankings
Ranking Based On Selection :20
Drilling
Drilling Engineering
Cementing
Drilling Fluids
Managed Pressure Drilling
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
154
117
0.760
* Total i10 IndexRankings
Ranking Based On Selection :21
CO2
phase behavior
viscosity
EOR
mobility control
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
152
95
0.625
* Total i10 IndexRankings
Ranking Based On Selection :22
Planetary Science
Meteoritics
Cosmochemistry
Geochemistry
Petrology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
152
92
0.605
* Total i10 IndexRankings
Ranking Based On Selection :23
petroleum engineering
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
152
74
0.487
* Total i10 IndexRankings
Ranking Based On Selection :24
Petroleum
Petrophysics
Energy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
143
97
0.678
* Total i10 IndexRankings
Ranking Based On Selection :25
Petroleum biomarkers
chemometrics
stable isotopes
molecular archaeology
gas geochemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
140
106
0.757
Mukul Sharma
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
581
388
0.668
petroleum engineering
hydraulic fracturing
formation damage
water injection
production engineering
SM Farouq Ali
University of Houston
Houston, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
452
291
0.644
Petroleum Engineering
Kamy Sepehrnoori
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
440
300
0.682
Petroleum Engineering
Reservoir Simulation
James C Hower
University of Kentucky
Lexington, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
424
294
0.693
coal petrology
fly ash petrology
coal geochemistry
coal maceral origins
Gary A Pope
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
370
226
0.611
petroleum engineering
reservoir engineering
enhanced oil recovery
reservoir simulation
Robert M Hazen
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
336
237
0.705
mineralogy
astrobiology
astrochemistry
petrology
Larry Lake
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
262
143
0.546
reservoir engineering
enhanced oil recovery
petroleum engineering
Ben Li
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
240
199
0.829
petroleum engineering
Kishore Mohanty
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
239
186
0.778
petroleum engineering
chemical engineering
Yu Shu Wu
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
224
134
0.598
Reservoir dynamics & simulation
coupled processes of fluid/heat/geomechanics in reservoirs
fractured reservoirs
CO2-EOR
Timothy Grove
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
215
156
0.726
Igneous petrology
Experimental Petrology
Geochemistry
Mineralogy
Mohamed Soliman
University of Houston
Houston, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
194
102
0.526
Stimulation
Hydraulic Fracturing
Simulation
Fluid Flow
Conformance Application
Cem Sarica
University of Tulsa
Tulsa, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
182
145
0.797
Multiphase Flow in Pipes
Flow Assurance
Horizontal Wells
Artificial Lift
Petroleum Engineering
Albert C Reynolds
University of Tulsa
Tulsa, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
179
109
0.609
Inverse theory
optimization
uncertainty quantification
reservoir simulation
data assimilation
Mojdeh Delshad
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
177
121
0.684
petroleum engineering
surfactant flooding
hydrogen and CO2 storage
gel
Stefan Miska
University of Tulsa
Tulsa, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
172
117
0.680
rock mechanics
drilling hydraulics
optimization
Carl Sondergeld
University of Oklahoma
Norman, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
163
106
0.650
petrophysics
rock physics
geomechanics
seismics
Subhash Shah
University of Oklahoma
Norman, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
162
100
0.617
stimulation
drilling
coiled tubing
completion
petroleum eng
Quoc P Nguyen
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
155
135
0.871
Interface & Colloid Science
Geosystems Engineering
Enhanced Oil Recovery
Carbon Utilization & Storage
Eric Van Oort
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
154
117
0.760
Drilling
Drilling Engineering
Cementing
Drilling Fluids
Managed Pressure Drilling
Robert Enick
University of Pittsburgh
Pittsburgh, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
152
95
0.625
CO2
phase behavior
viscosity
EOR
mobility control
David W Mittlefehldt
NASA Ames Research Center
California, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
152
92
0.605
Planetary Science
Meteoritics
Cosmochemistry
Geochemistry
Petrology
W John Lee
Texas A&M University
College Station, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
152
74
0.487
petroleum engineering
Chandra S Rai
University of Oklahoma
Norman, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
143
97
0.678
Petroleum
Petrophysics
Energy
Ken Peters
Stanford University
Stanford, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
140
106
0.757
Petroleum biomarkers
chemometrics
stable isotopes
molecular archaeology
gas geochemistry