C. E. Ejim

527 total citations
24 papers, 424 citations indexed

About

C. E. Ejim is a scholar working on Ocean Engineering, Biomedical Engineering and Mechanical Engineering. According to data from OpenAlex, C. E. Ejim has authored 24 papers receiving a total of 424 indexed citations (citations by other indexed papers that have themselves been cited), including 17 papers in Ocean Engineering, 7 papers in Biomedical Engineering and 6 papers in Mechanical Engineering. Recurrent topics in C. E. Ejim's work include Oil and Gas Production Techniques (16 papers), Reservoir Engineering and Simulation Methods (10 papers) and Hydraulic and Pneumatic Systems (6 papers). C. E. Ejim is often cited by papers focused on Oil and Gas Production Techniques (16 papers), Reservoir Engineering and Simulation Methods (10 papers) and Hydraulic and Pneumatic Systems (6 papers). C. E. Ejim collaborates with scholars based in United States, Saudi Arabia and Canada. C. E. Ejim's co-authors include Brian A. Fleck, A. Amirfazli, Mohammad Azizur Rahman, Abdelsalam Al‐Sarkhi, J. J. Xiao, Aftab Ahmad, S.M. Shaahid, Luai M. Alhems, Yuri Alexeev and B Ogbonna and has published in prestigious journals such as Fuel, SAE technical papers on CD-ROM/SAE technical paper series and Journal of Petroleum Science and Engineering.

In The Last Decade

C. E. Ejim

20 papers receiving 398 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
C. E. Ejim United States	6	307	245	135	98	54	24	424
Chunhua Sun China	13	275 0.9×	168 0.7×	278 2.1×	76 0.8×	143 2.6×	47	615
Zuo Cheng-ji China	9	219 0.7×	83 0.3×	60 0.4×	67 0.7×	21 0.4×	26	345
Chia-fon Lee United States	11	389 1.3×	476 1.9×	305 2.3×	44 0.4×	26 0.5×	20	621
Simón Martínez-Martínez Mexico	11	135 0.4×	168 0.7×	108 0.8×	139 1.4×	25 0.5×	32	387
Takao Karasawa Japan	10	144 0.5×	275 1.1×	203 1.5×	60 0.6×	21 0.4×	37	377
Yenny Christanti British Virgin Islands	7	98 0.3×	116 0.5×	171 1.3×	150 1.5×	121 2.2×	8	445
Thanos Megaritis United Kingdom	12	247 0.8×	373 1.5×	198 1.5×	51 0.5×	52 1.0×	33	502
Junhao Yan China	14	226 0.7×	339 1.4×	208 1.5×	34 0.3×	48 0.9×	28	468
Xiaokang Ma China	8	245 0.8×	215 0.9×	224 1.7×	22 0.2×	128 2.4×	11	426
Zhuqiang Yang China	15	270 0.9×	114 0.5×	475 3.5×	265 2.7×	64 1.2×	40	679

Countries citing papers authored by C. E. Ejim

Since Specialization

Citations

This map shows the geographic impact of C. E. Ejim's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by C. E. Ejim with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites C. E. Ejim more than expected).

Fields of papers citing papers by C. E. Ejim

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by C. E. Ejim. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by C. E. Ejim. The network helps show where C. E. Ejim may publish in the future.

Co-authorship network of co-authors of C. E. Ejim

This figure shows the co-authorship network connecting the top 25 collaborators of C. E. Ejim. A scholar is included among the top collaborators of C. E. Ejim based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with C. E. Ejim. C. E. Ejim is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Ejim, C. E., et al.. (2025). Breakthrough Multiphase Pumping Using an Ultra-High-Speed High-Gas-Volume-Fraction Pump.

Al‐Sarkhi, Abdelsalam, et al.. (2024). Experimental investigation of a novel gas-liquid homogenizer methodology for ESP in high GVF flow applications. Results in Engineering. 24. 103040–103040. 1 indexed citations

Ejim, C. E., et al.. (2024). Performance Envelope of a 538-Series High-Speed Helico-Axial Pump for High-Gas-Volume-Fraction Operation. SPE Journal. 29(8). 4134–4146. 2 indexed citations

Ejim, C. E., et al.. (2024). Long Term Corrosion Risk Evaluation of Load Bearing High Power Electrical Submersible Pump Cable. Offshore Technology Conference Asia. 1 indexed citations

Ejim, C. E., et al.. (2023). A Comprehensive Study of a Novel Submersible Pump. SPE Annual Technical Conference and Exhibition.

Ejim, C. E.. (2023). Establishing Critical Gas Velocities for Liquid Loading in Deviated Gas Wells. 1 indexed citations

Ejim, C. E., et al.. (2023). Ultra-High-Speed High-Gas-Volume-Fraction Pump Development. 3 indexed citations

Ejim, C. E., et al.. (2023). Review of Downhole Gas Liquid Separators In Unconventional Reservoirs. SPE Annual Technical Conference and Exhibition. 2 indexed citations

Ejim, C. E., et al.. (2023). Delaying Multiphase Pump Gas-Lock in High-GVF Flows Using High-Speed Operation. 1 indexed citations

10.

Ejim, C. E., et al.. (2022). Testing Gas-Liquid Homogenization for High GVF Flow Applications in ESPs. 1 indexed citations

11.

Ejim, C. E., et al.. (2022). Physical Testing of a High-Speed Helicoaxial Pump for High Gas Volume Fraction Operation. SPE Production & Operations. 37(4). 721–733. 3 indexed citations

12.

Ejim, C. E.. (2020). Evaluating Operational Capabilities of High-Speed Gas Handling for Downhole Oil Production. International Petroleum Technology Conference. 4 indexed citations

13.

Ahmad, Aftab, et al.. (2018). Pressure Drop Measurements in Venturi Meters of Different Beta Ratios for Oil–Water Flow Experiments. Arabian Journal for Science and Engineering. 43(11). 6355–6374. 5 indexed citations

14.

Ejim, C. E. & J. J. Xiao. (2017). Sensitivity and Uncertainty Analysis of a Downhole Flow Metering System for an ESP. SPE Kingdom of Saudi Arabia Annual Technical Symposium and Exhibition.

15.

Alhems, Luai M., Abdelsalam Al‐Sarkhi, Aftab Ahmad, et al.. (2016). Effect of inclination and water cut on venturi pressure drop measurements for oil-water flow experiments. Journal of Petroleum Science and Engineering. 147. 636–646. 7 indexed citations

16.

Ogbonna, B, et al.. (2016). Occupational Health Regulations in Nigeria: A Narrative Overview. Asian Journal of Medicine and Health. 1(5). 1–7. 4 indexed citations

17.

Ejim, C. E., Mohammad Azizur Rahman, A. Amirfazli, & Brian A. Fleck. (2010). Effects of liquid viscosity and surface tension on atomization in two-phase, gas/liquid fluid coker nozzles. Fuel. 89(8). 1872–1882. 60 indexed citations

18.

Ejim, C. E., Mohammad Azizur Rahman, A. Amirfazli, & Brian A. Fleck. (2010). EXPERIMENTAL INVESTIGATION OF GEOMETRIC SCALING ON ATOMIZATION IN A TWO-PHASE GAS/LIQUID SPRAY. Multiphase Science and Technology. 22(2). 133–155. 5 indexed citations

19.

Ejim, C. E., et al.. (2006). Effect of Biodiesel Fuel Properties and Its Blends on Atomization. SAE technical papers on CD-ROM/SAE technical paper series. 1. 25 indexed citations

20.

Ejim, C. E., Brian A. Fleck, & A. Amirfazli. (2006). Analytical study for atomization of biodiesels and their blends in a typical injector: Surface tension and viscosity effects. Fuel. 86(10-11). 1534–1544. 295 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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