The AD Scientific Index (Alper-Doger Scientific Index) provides the most comprehensive analysis across 13 main fields and 197 sub-branches at global, national, and regional levels. These analyses are based on indicators such as the H-index, i10-index, and citation count, including their values from the last 6 years. As of Jan 31, 2025, the rankings are determined according to the Total H Index. BETA VERSION: The subject field rankings for the world, regions, countries, and universities are currently in their Beta phase. This is due to the exclusion of (870.053) scientists categorized under ‘Others’, whose profiles have yet to be determined, edited, or classified. As updates are made to these fields, the rankings will be adjusted accordingly. Note: Please keep this in mind while reviewing the rankings. For further details, explore our [University Subject Rankings].
* Total H IndexRankings
Ranking Based On Selection: 1
Petroleum Engineering
Metrics
H-Index
i10 Index
Citation Counts
56
402
15,161
* Total H IndexRankings
Ranking Based On Selection: 2
Artificial Intelligence in Petroleum Engineering
Drilling Engineering
Cementing
Drilling Fluids
Metrics
H-Index
i10 Index
Citation Counts
50
267
10,130
* Total H IndexRankings
Ranking Based On Selection: 3
petroleum engineering
Metrics
H-Index
i10 Index
Citation Counts
42
146
6,899
* Total H IndexRankings
Ranking Based On Selection: 4
Reactive and Complex fluids
Molecular Simulation
EOR
Metrics
H-Index
i10 Index
Citation Counts
40
128
6,962
* Total H IndexRankings
Ranking Based On Selection: 5
Organic-Inorganic Polymeric Nanocomposite
Water Treatment
Water Purification
Oil-Water Separation
Sensor
Metrics
H-Index
i10 Index
Citation Counts
38
101
4,779
* Total H IndexRankings
Ranking Based On Selection: 6
Metrics
H-Index
i10 Index
Citation Counts
38
94
4,660
* Total H IndexRankings
Ranking Based On Selection: 7
Energy Sustainability
Heat transfer
Net- Zero Energy System
Metrics
H-Index
i10 Index
Citation Counts
33
94
3,868
* Total H IndexRankings
Ranking Based On Selection: 8
Metrics
H-Index
i10 Index
Citation Counts
32
67
4,131
* Total H IndexRankings
Ranking Based On Selection: 9
HydroGeophysics
Engineering Geophysics
Environmental Geophysics
Petroleum Geophysics
Metrics
H-Index
i10 Index
Citation Counts
32
75
4,021
* Total H IndexRankings
Ranking Based On Selection: 10
Hydrogen storage
coating
liner
phase change material
polyurethane
Metrics
H-Index
i10 Index
Citation Counts
30
60
3,106
* Total H IndexRankings
Ranking Based On Selection: 11
Drilling Engineering
Well Cementing
Artificial intelligence in Petroleum Eng.
Well Completion
Metrics
H-Index
i10 Index
Citation Counts
28
46
1,908
* Total H IndexRankings
Ranking Based On Selection: 12
Igneous Petrology
Tectonics
Cosmochemistry
Planetary Science
Metrics
H-Index
i10 Index
Citation Counts
28
40
3,138
* Total H IndexRankings
Ranking Based On Selection: 13
Petroleum Engineering
Drilling Engineering
Drilling Fluids
oil and Gas Well Cementing
Metrics
H-Index
i10 Index
Citation Counts
25
56
3,078
* Total H IndexRankings
Ranking Based On Selection: 14
Computational Multiphysics
Metrics
H-Index
i10 Index
Citation Counts
25
62
1,978
* Total H IndexRankings
Ranking Based On Selection: 15
Smart Materials-Based Actuators & Sensors
Mechatronics
Acoustics & Vibration
Guided Waves
Metrics
H-Index
i10 Index
Citation Counts
25
48
3,321
* Total H IndexRankings
Ranking Based On Selection: 16
Metrics
H-Index
i10 Index
Citation Counts
24
49
2,394
* Total H IndexRankings
Ranking Based On Selection: 17
Hydrocarbon Resources
PVT
EOR
Adsorption
AI and Simulation
Metrics
H-Index
i10 Index
Citation Counts
22
32
1,608
* Total H IndexRankings
Ranking Based On Selection: 18
Relay cooperative networks
Optical communications
Reconfigurable intelligent surfaces
Metrics
H-Index
i10 Index
Citation Counts
22
40
1,750
* Total H IndexRankings
Ranking Based On Selection: 19
Saudi Arabia
Metrics
H-Index
i10 Index
Citation Counts
22
38
1,813
* Total H IndexRankings
Ranking Based On Selection: 20
Refining and Petrochemicals
Organometallic Catalysis
Heterogeneous and Homogeneous Catalysis
Metrics
H-Index
i10 Index
Citation Counts
22
29
1,330
* Total H IndexRankings
Ranking Based On Selection: 21
GIS and Urban Remote Sensing
Natural Hazards
Urban Modelling
Metrics
H-Index
i10 Index
Citation Counts
21
30
1,689
* Total H IndexRankings
Ranking Based On Selection: 22
Petroleum Engineering
fluid flow in porous media
Petrophysics
Foam transport in porous media
CO2 geosequestration
Metrics
H-Index
i10 Index
Citation Counts
21
48
1,732
* Total H IndexRankings
Ranking Based On Selection: 23
Urban Sustainability and Planning
Smart and sustainable cities
Campus and University Sustainability Assessment
Metrics
H-Index
i10 Index
Citation Counts
21
31
3,150
* Total H IndexRankings
Ranking Based On Selection: 24
Petroleum Refing
Petrochemicals
Catalysis
Polymerization
Organometallics
Metrics
H-Index
i10 Index
Citation Counts
21
31
1,377
* Total H IndexRankings
Ranking Based On Selection: 25
Persistent Luminescence
Upconversion
Phosphors
Metrics
H-Index
i10 Index
Citation Counts
18
20
1,459
Mohamed A Mahmoud
Metrics
H-Index
i10-Index
Citation Counts
56
402
15,161
Petroleum Engineering
Salaheldin Elkatatny
Metrics
H-Index
i10-Index
Citation Counts
50
267
10,130
Artificial Intelligence in Petroleum Engineering
Drilling Engineering
Cementing
Drilling Fluids
Ruud Weijermars
Metrics
H-Index
i10-Index
Citation Counts
42
146
6,899
petroleum engineering
Abdullah Sultan
Metrics
H-Index
i10-Index
Citation Counts
40
128
6,962
Reactive and Complex fluids
Molecular Simulation
EOR
Umair Baig
Metrics
H-Index
i10-Index
Citation Counts
38
101
4,779
Organic-Inorganic Polymeric Nanocomposite
Water Treatment
Water Purification
Oil-Water Separation
Sensor
Khalid R Alhooshani
Metrics
H-Index
i10-Index
Citation Counts
38
94
4,660
Kashif Irshad
Metrics
H-Index
i10-Index
Citation Counts
33
94
3,868
Energy Sustainability
Heat transfer
Net- Zero Energy System
Fahhad H Alharbi
Metrics
H-Index
i10-Index
Citation Counts
32
67
4,131
Pantelis Soupios
Metrics
H-Index
i10-Index
Citation Counts
32
75
4,021
HydroGeophysics
Engineering Geophysics
Environmental Geophysics
Petroleum Geophysics
Mohammad Mizanur Rahman
Metrics
H-Index
i10-Index
Citation Counts
30
60
3,106
Hydrogen storage
coating
liner
phase change material
polyurethane
Ahmed Abdulhamid Mahmoud
Metrics
H-Index
i10-Index
Citation Counts
28
46
1,908
Drilling Engineering
Well Cementing
Artificial intelligence in Petroleum Eng.
Well Completion
Scott A Whattam
Metrics
H-Index
i10-Index
Citation Counts
28
40
3,138
Igneous Petrology
Tectonics
Cosmochemistry
Planetary Science
Abdulaziz Al Majed
Metrics
H-Index
i10-Index
Citation Counts
25
56
3,078
Petroleum Engineering
Drilling Engineering
Drilling Fluids
oil and Gas Well Cementing
Shahzada Zaman Shuja
Metrics
H-Index
i10-Index
Citation Counts
25
62
1,978
Computational Multiphysics
Muhammad A Hawwa
Metrics
H-Index
i10-Index
Citation Counts
25
48
3,321
Smart Materials-Based Actuators & Sensors
Mechatronics
Acoustics & Vibration
Guided Waves
Sidqi Abu Khamsin
Metrics
H-Index
i10-Index
Citation Counts
24
49
2,394
Shams Kalam
Metrics
H-Index
i10-Index
Citation Counts
22
32
1,608
Hydrocarbon Resources
PVT
EOR
Adsorption
AI and Simulation
Anas M Salhab
Metrics
H-Index
i10-Index
Citation Counts
22
40
1,750
Relay cooperative networks
Optical communications
Reconfigurable intelligent surfaces
Hassan Al Muallem
Metrics
H-Index
i10-Index
Citation Counts
22
38
1,813
Ziyauddin Qureshi
Metrics
H-Index
i10-Index
Citation Counts
22
29
1,330
Refining and Petrochemicals
Organometallic Catalysis
Heterogeneous and Homogeneous Catalysis
Muhammad Tauhidur Rahman
Metrics
H-Index
i10-Index
Citation Counts
21
30
1,689
GIS and Urban Remote Sensing
Natural Hazards
Urban Modelling
Abdulrauf Adebayo
Metrics
H-Index
i10-Index
Citation Counts
21
48
1,732
Petroleum Engineering
fluid flow in porous media
Petrophysics
Foam transport in porous media
CO2 geosequestration
Habib Alshuwaikhat
Metrics
H-Index
i10-Index
Citation Counts
21
31
3,150
Urban Sustainability and Planning
Smart and sustainable cities
Campus and University Sustainability Assessment
Muhammad Naseem Akhtar
Metrics
H-Index
i10-Index
Citation Counts
21
31
1,377
Petroleum Refing
Petrochemicals
Catalysis
Polymerization
Organometallics
Yafei Chen
Metrics
H-Index
i10-Index
Citation Counts
18
20
1,459
Persistent Luminescence
Upconversion
Phosphors