Citation Rankings
Highly Cited Researchers
Saudi Arabian Oil Company Highly Cited Researchers CitationNatural Sciences / Chemical Sciences Rankings 2025
The Citation Rankings (Highly Cited Researchers) highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.
* Total Citation Counts Rankings
Ranking Based On Selection :1
catalysis
alpha olefins and polyolefins
polycarbonates
CO2 chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,756
1,223
0.444
* Total Citation Counts Rankings
Ranking Based On Selection :2
Organic Geochemistry
Environmental Science
Environmental Analytical Chemistry
GCxGC
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,324
818
0.352
* Total Citation Counts Rankings
Ranking Based On Selection :3
Heterogeneous Catalysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,303
1,321
0.574
* Total Citation Counts Rankings
Ranking Based On Selection :4
Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,909
1,199
0.628
* Total Citation Counts Rankings
Ranking Based On Selection :5
Oilfield chemistry
scale management
water treatment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,589
835
0.525
* Total Citation Counts Rankings
Ranking Based On Selection :6
Refining and petrochemical R&D
heterogeneous catalysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,387
383
0.276
* Total Citation Counts Rankings
Ranking Based On Selection :7
Catalysis
engineering
energy
sustainability
commercialization
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,293
751
0.581
* Total Citation Counts Rankings
Ranking Based On Selection :8
Chromatography
Mass spectrometry
Fossil fuels
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,292
651
0.504
* Total Citation Counts Rankings
Ranking Based On Selection :9
chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,029
524
0.509
* Total Citation Counts Rankings
Ranking Based On Selection :10
Mass Spectrometry
Analytical Chemistry
Oil and Gas Research
Petroleum
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,000
598
0.598
* Total Citation Counts Rankings
Ranking Based On Selection :11
Heterogeneous Catalysis
Hydrocarbon Conversion
Petrochemicals
Plastic Recycling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
967
702
0.726
* Total Citation Counts Rankings
Ranking Based On Selection :12
catalysis
petrochemical conversion
zeolite synthesis
high-throughput experimentation
polymers
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
935
551
0.589
* Total Citation Counts Rankings
Ranking Based On Selection :13
Chemicals
Pump
Turbomachines
CFD
Heat Tansfer
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
909
680
0.748
* Total Citation Counts Rankings
Ranking Based On Selection :14
Chemistry
Organic Materials
Polymer Chemistry
Gas Separation
Membranes
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
780
379
0.486
* Total Citation Counts Rankings
Ranking Based On Selection :15
Steam catalytic cracking
Refinery Catalysts
Petrochemical Catalysts
CO2 utilization
Dry reforming
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
671
536
0.799
* Total Citation Counts Rankings
Ranking Based On Selection :16
Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
541
252
0.466
* Total Citation Counts Rankings
Ranking Based On Selection :17
Geochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
473
125
0.264
* Total Citation Counts Rankings
Ranking Based On Selection :18
Surface chemistry
crude oil emulsions
online process instrumentation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
347
184
0.530
* Total Citation Counts Rankings
Ranking Based On Selection :19
Hydrocarbon research
Natural Gas separation
organometallic chemistry
Catalysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
326
111
0.340
* Total Citation Counts Rankings
Ranking Based On Selection :20
Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
175
155
0.886
* Total Citation Counts Rankings
Ranking Based On Selection :21
Chemistry
Microbiology
Sensors
MIC
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
55
38
0.691
* Total Citation Counts Rankings
Ranking Based On Selection :22
Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
47
22
0.468
* Total Citation Counts Rankings
Rankings
345,135
1,424
18
Ranking Based On Selection: 1
Wei Xu
Saudi Arabian Oil Company
Dhahran, Saudi Arabia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,756
1,223
0.444
catalysis
alpha olefins and polyolefins
polycarbonates
CO2 chemistry
* Total Citation Counts Rankings
Rankings
394,142
1,708
24
Ranking Based On Selection: 2
Charles E West
Saudi Arabian Oil Company
Dhahran, Saudi Arabia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,324
818
0.352
Organic Geochemistry
Environmental Science
Environmental Analytical Chemistry
GCxGC
* Total Citation Counts Rankings
Rankings
396,838
1,727
25
Ranking Based On Selection: 3
Christos M Kalamaras
Saudi Arabian Oil Company
Dhahran, Saudi Arabia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,303
1,321
0.574
* Total Citation Counts Rankings
Rankings
454,932
2,117
31
Ranking Based On Selection: 4
Amani Alghamdi
Saudi Arabian Oil Company
Dhahran, Saudi Arabia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,909
1,199
0.628
* Total Citation Counts Rankings
Rankings
515,575
2,528
43
Ranking Based On Selection: 5
Qiwei Wang
Saudi Arabian Oil Company
Dhahran, Saudi Arabia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,589
835
0.525
Oilfield chemistry
scale management
water treatment
* Total Citation Counts Rankings
Rankings
562,028
2,831
49
Ranking Based On Selection: 6
Yaming Jin
Saudi Arabian Oil Company
Dhahran, Saudi Arabia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,387
383
0.276
Refining and petrochemical R&D
heterogeneous catalysis
* Total Citation Counts Rankings
Rankings
586,510
2,998
55
Ranking Based On Selection: 7
Ibrahim A Abba
Saudi Arabian Oil Company
Dhahran, Saudi Arabia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,293
751
0.581
Catalysis
engineering
energy
sustainability
commercialization
* Total Citation Counts Rankings
Rankings
586,816
3,001
56
Ranking Based On Selection: 8
Saroj K Panda
Saudi Arabian Oil Company
Dhahran, Saudi Arabia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,292
651
0.504
Chromatography
Mass spectrometry
Fossil fuels
* Total Citation Counts Rankings
Rankings
668,178
3,609
65
Ranking Based On Selection: 9
Miao Sun
Saudi Arabian Oil Company
Dhahran, Saudi Arabia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,029
524
0.509
* Total Citation Counts Rankings
Rankings
678,537
3,695
66
Ranking Based On Selection: 10
Hendrik Muller
Saudi Arabian Oil Company
Dhahran, Saudi Arabia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,000
598
0.598
Mass Spectrometry
Analytical Chemistry
Oil and Gas Research
Petroleum
* Total Citation Counts Rankings
Rankings
690,537
3,799
67
Ranking Based On Selection: 11
Aaron Akah
Saudi Arabian Oil Company
Dhahran, Saudi Arabia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
967
702
0.726
Heterogeneous Catalysis
Hydrocarbon Conversion
Petrochemicals
Plastic Recycling
* Total Citation Counts Rankings
Rankings
702,722
3,883
72
Ranking Based On Selection: 12
Sohel Shaikh
Saudi Arabian Oil Company
Dhahran, Saudi Arabia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
935
551
0.589
catalysis
petrochemical conversion
zeolite synthesis
high-throughput experimentation
polymers
* Total Citation Counts Rankings
Rankings
712,906
3,954
78
Ranking Based On Selection: 13
Abdul Rahman Akhras, Arz Akhras
Saudi Arabian Oil Company
Dhahran, Saudi Arabia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
909
680
0.748
Chemicals
Pump
Turbomachines
CFD
Heat Tansfer
* Total Citation Counts Rankings
Rankings
767,866
4,344
84
Ranking Based On Selection: 14
Ali Hayek
Saudi Arabian Oil Company
Dhahran, Saudi Arabia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
780
379
0.486
Chemistry
Organic Materials
Polymer Chemistry
Gas Separation
Membranes
* Total Citation Counts Rankings
Rankings
819,645
4,743
95
Ranking Based On Selection: 15
Emad N Shafei
Saudi Arabian Oil Company
Dhahran, Saudi Arabia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
671
536
0.799
Steam catalytic cracking
Refinery Catalysts
Petrochemical Catalysts
CO2 utilization
Dry reforming
* Total Citation Counts Rankings
Rankings
889,743
5,258
106
Ranking Based On Selection: 16
Said Aljaroudi
Saudi Arabian Oil Company
Dhahran, Saudi Arabia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
541
252
0.466
* Total Citation Counts Rankings
Rankings
939,851
5,600
122
Ranking Based On Selection: 17
Feng Lu
Saudi Arabian Oil Company
Dhahran, Saudi Arabia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
473
125
0.264
* Total Citation Counts Rankings
Rankings
1,063,529
6,268
131
Ranking Based On Selection: 18
Simone Less
Saudi Arabian Oil Company
Dhahran, Saudi Arabia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
347
184
0.530
Surface chemistry
crude oil emulsions
online process instrumentation
* Total Citation Counts Rankings
Rankings
1,088,429
6,407
135
Ranking Based On Selection: 19
Veera Venkata Ramakrishna, Tammana
Saudi Arabian Oil Company
Dhahran, Saudi Arabia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
326
111
0.340
Hydrocarbon research
Natural Gas separation
organometallic chemistry
Catalysis
* Total Citation Counts Rankings
Rankings
1,346,468
9,108
145
Ranking Based On Selection: 20
Anaam H Al-Shaikhali
Saudi Arabian Oil Company
Dhahran, Saudi Arabia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
175
155
0.886
* Total Citation Counts Rankings
Rankings
1,796,245
11,411
173
Ranking Based On Selection: 21
Mohammed Almoniee
Saudi Arabian Oil Company
Dhahran, Saudi Arabia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
55
38
0.691
Chemistry
Microbiology
Sensors
MIC
* Total Citation Counts Rankings
Rankings
1,846,800
11,658
178
Ranking Based On Selection: 22
Mohamed Ahmed Mahmoud|M.A.Saad
Saudi Arabian Oil Company
Dhahran, Saudi Arabia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
47
22
0.468