Journal Publications
Singh, S., Choudhary, R., Kumar, S., Gautam, S., & Prasad, S. K. (2026). EVA/SiO2 Nanocomposite Pour Point Depressant for Enhancing Flow Properties of Indian Waxy Crude Oil. https://doi.org/10.1021/acs.energyfuels.5c06456 (I.F.: 5.3)
Choudhary, R., Singh, S., Kumar, S., Gautam, S., Kumar, A. (2025). Performance Evaluation of a Zwitterionic Surfactant for the Emulsification of an Indian Heavy Crude Oil for Pipeline Transportation. Fuel, 405 (August 2025), 136547. https://doi.org/10.1016/j.fuel.2025.136547. (I.F.: 7.5)
Gautam, S., Kumar, S., Kumar, A., Rajak, V. K., & Guria, C. (2025). Development of functional polymer-based clay-free HPHT drilling fluid: Effect of molecular weight and its distribution on drilling fluid performance. Geoenergy Science and Engineering, 246 (December 2024), 213616. https://doi.org/10.1016/j.geoen.2024.213616 (IF: 4.6)
Gautam, R., Hazra, A., Faujdar, P., Sen, S., Mishra, B. C., Sharma, T., & Kumar, S. (2024). Effect of Size-Controlled Nanofluid on Mechanical Properties, Microstructure, and Rheological Behavior of Cement Slurry for Oil Well Cementing. ACS Omega, 9(48), 47739–47755. https://doi.org/10.1021/acsomega.4c07871 (I.F.: 4.1)
Bardhan, A., Kumar, S., Basu, S., Pandey, A., Kesarwani, H., Saxena, A., Sarkar, J., Sharma, S., & Kumar, S. (2024). Mechanistic Performance of Modified Carbon Nanotubes Stabilized in Water-Based Drilling Fluids for High-Temperature Applications. Energy & Fuels, 38(17), 16066–16078. https://doi.org/10.1021/acs.energyfuels.4c02548 (I.F.: 5.3)
Bardhan, A., Singh, A., Nishanta, H., Sharma, S., Choubey, A. K., & Kumar, S. (2024). Biogenic Copper Oxide Nanoparticles for Improved Lubricity and Filtration Control in Water-Based Drilling Mud. Energy & Fuels, 38(10), 8564–8578. https://doi.org/10.1021/acs.energyfuels.4c00635 (I.F.: 5.3)
Kumar, S., Kumar, A., Gautam, S., & Verma, A. (2024). Emulsification of Indian heavy crude oil and analysis of flow characteristics using computational fluid dynamics (CFD) for pipeline transportation. Journal of Dispersion Science and Technology, 45(11), 2166–2179. https://doi.org/10.1080/01932691.2023.2256384 (I.F. 1.9)
Paswan, B. K., Kuma, S., & Mahto, V. (2022). Evaluation of a soybean oil derived surfactant in the development of oil-in-water (O/W) emulsion drilling mud for shale formation, Journal of Petroleum Science and Engineering. 217, 2022. https://doi.org/10.1016/j.petrol.2022.110926 (IF: 5.168)
Shailesh Kumar, Vikrant Singh Rajput, Vikas Mahto, “Experimental studies on demulsification of heavy crude oil-in-water emulsions by chemicals, heating and centrifuging”, SPE Production and Operations, 36 (02), 375-386, 2020. SPE-204452-PA. https://doi.org/10.2118/204452-PA
Shailesh Kumar and Vikas Mahto, “Use of a novel surfactant to prepare oil-in-water emulsion of an Indian heavy crude oil for pipeline transportation”, Energy & Fuels, 31, 12010-12020, 2017. https://doi.org/10.1021/acs.energyfuels.7b02437 (IF: 5.3)
Shailesh Kumar and Vikas Mahto, “Emulsification of Indian heavy crude oil using a novel surfactant for pipeline transportation. Petroleum Science”, 14, 372–382, 2017. https://doi.org/10.1007/s12182-017-0153-6 (IF: 6.0)
Shailesh Kumar and Vikas Mahto, “Emulsification of Indian heavy crude oil in water for its efficient transportation through offshore pipelines”, Chemical Engineering Research and Design. 115 (2016), 34–43. https://doi.org/10.1016/j.cherd.2016.09.017 (IF: 3.9)
Conference Publications/Presentations
Bardhan, A., Halari, D., Pandey, A., Saxena, A., Sharma, S., Kumar, S. (2025). Exploring the Role of Vinyl Copolymers in Next-Generation Water-Based Drilling Fluids for Geothermal Wells. In: Singh, A., Tiwari, P., Kumar, S., Kakati, A. (eds) Proceedings of 1st International Conference on Petroleum, Hydrogen and Decarbonization. ICPHD 2023. Lecture Notes on Multidisciplinary Industrial Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-96-3667-9_10 (International Conference Proceedings)
Anirudh Bardhan, Fahad Khan, Himanshu Kesarwani, Shivanjali Sharma, Shailesh Kumar, “Performance Evaluation of Novel Silane Coated Nanoparticles as An Additive for High-performance Drilling Fluid Applications”. Presentation In: 15th International Petroleum Technology Conference, Bangkok, Thailand, 1-3rd March 2023. https://doi.org/10.2523/IPTC-22878-MS. (International Conference Proceedings)
Shailendra Singh, Rajiv Choudhary, Dr. Shailesh Kumar, Dr. Sidharth Gautam, “Synthesis and Performance Evaluation of EVA/modified Silica Nanocomposite as an Effective Pour Point Depressant for Indian Waxy Crude Oils” Presented In: International Conference on Petroleum, Hydrogen and Decarbonisation (ICPHD 2025)”, RGIPT Jais, India. November 7-9, 2025. (International Conference)
Rajiv Choudhary, Shailendra Singh, Dr. Shailesh Kumar, Dr. Sidharth Gautam, “Investigation of a Zwitterionic Surfactant and Ultrasonication-assisted Emulsion Formulation for Heavy Crude Oil Transportation” Presented In: International Conference on Petroleum, Hydrogen and Decarbonisation (ICPHD 2025)”, RGIPT Jais, India. November 7-9, 2025. (International Conference)
Rajiv Choudhary, Shailendra Singh, and Dr. Shailesh Kumar, “Flow Improvement of Indian Heavy Crude Oil via Ultrasonic Emulsification with a Zwitterionic Surfactant” Presented in: 8th International Oil & Gas Chemistry, Chemicals and Additives Conference (IOGCA 2025), India, 18-19 September 2025 (International Conference)
Shailendra Singh, Pushpa Chaurasiya, Shailesh Kumar, Sidharth Gautam, Amit Kumar, “Flow Improvement of an Indian Waxy Crude Oil Using a Novel Nanocomposite Pour Point Depressant (NPPD)” Presented In: Indian Chemical Engineering Congress (IIChE) 2024, NIT Jalandhar, India. December 27-30, 2024. (National Conference)
Shailendra Singh, Shailesh Kumar, Sidharth Gautam, and Amit Kumar, “Nanocomposite-Based Pour Point Depressant (NPPD) for Improved Flow Assurance in Indian Waxy Crude Oils”, Presented In: International Conference on Petroleum, Hydrogen and Decarbonisation (ICPHD 2024)”, IIT(ISM) Dhanbad, India. December 12-14, 2024. (International Conference)
Aman Jaiswal, Arin Kumar, and Shailesh Kumar, “Development of High-Performance Oil-Based Muds for HPHT Wells Using a Novel Surfactant”, Presented In: International Conference on Petroleum, Hydrogen and Decarbonisation (ICPHD 2024)”, IIT(ISM) Dhanbad, India. December 12-14, 2024. (International Conference)
Shailendra Singh, Aviral Sharma, Nikhil Deshmukh, and Shailesh Kumar, “Advancing Waxy Crude Oil Transportation with Nanocomposite Pour Point Depressants: Insights from Review and Experimental Studies” Presented In: International Conference on Petroleum, Hydrogen and Decarbonisation”, IIT(ISM) Dhanbad, India. December 12-14, 2024. (International Conference)
Ritansh Prabha, Sagar Kumar, and Dr. Sidharth Gautam and Dr. Shailesh Kumar, “Evaluation of Eco-Friendly Lost Circulation Materials” Presented In: International Conference on Petroleum, Hydrogen and Decarbonisation (ICPHD 2024)”, IIT(ISM) Dhanbad, India. December 12-14, 2024. (International Conference) (1st Runner up - Best Poster Presentation Award)
Janmajay Singh Rajput, Dr. Amit Kumar, Dr. Sidharth Gautam and Dr. Shailesh Kumar, “A Study on the Impact of Base Salt on Performance of Brine Based Completion Fluid”, Presented In: International Conference on Petroleum, Hydrogen and Decarbonisation (ICPHD 2024)”, IIT(ISM) Dhanbad, India. December 12-14, 2024. (International Conference)
Aniket Kumar Singh, Aditya Agrawal, Dr. Sidharth Gautam and Dr. Shailesh Kumar, “A Computational Fluid Dynamics Approach to Optimize Borehole Cleaning Performance”, Presented In: International Conference on Petroleum, Hydrogen and Decarbonisation (ICPHD 2024)”, IIT(ISM) Dhanbad, India. December 12-14, 2024. (International Conference)
Bardhan, S. Sharma, S. Kumar, “Influence of Morphology and Dispersion Stability on the Properties of High-Performance Water-based Drilling Fluids: A Comparative Study on Zinc Oxide Nanostructures”. Paper presented at the 17th International Conference on Nanostructured Materials (ICNM-NANO), Abu Dhabi, United Arab Emirates, November 2024. (International Conference)
Rajiv Choudhary, Anupam Giri, Somaabha Bhattacharjee, Shailesh Kumar, Sidharth Gautam, Amit Kumar, “Experimental Investigation of the Effects of Heating, Dilution, and Emulsification on the Rheological Properties of Indian Heavy Crude Oil” Presented In: International Conference on Transforming Upstream, RGIPT Jais, India. September 30- October 1, 2024. (International Conference)
Somaabha Bhattacharjee, Anupam Giri, Rajiv Choudhary, and Shailesh Kumar, “Flow Improvement of Heavy Crude Oil: Comparison of Heating, Dilution and Emulsification” Presented In: 20th Annual Session of 11th Chemical Engineering Congress (SCHEMCON-2024), RGIPT Jais, India. September 20-21, 2024. (1st Runner up in session D1/S5)
Rajiv Chaudhary, Shailendra Singh, Shailesh Kumar, Amit Kumar, Sidharth Gautam “Evaluation of Zwitterionic Surfactant for Emulsification of Indian Heavy Crude Oil for Pipeline Transportation” Presented In: International Conference on Oil and Gas for Energy Security (ICOGES)-2024, PDEU Gandhinagar, India. February 16-17, 2024. (International Conference) (Best oral presenter in the oral session – Pipeline, CO2 Capture, & HSE)
Mohit Singh, Vishal Singh, Shailesh Kumar, Sidharth Gautam, “Simulation of Cuttings Distribution in Deviated Wells using Computational Fluid Dynamics with ANSYS Fluent” Presented In: International Conference on Petroleum, Hydrogen & Decarbonization, Indian Institute of Technology Guwahati, India. November 2, 2023. (International Conference)
Satyajeet Gautam, Jatin Kumar, Shailesh Kumar and Sidharth Gautam, “A Comparative Analysis of Shear Rate Models to Predict Accurate Rheology and Frictional Pressure Drop” Presented In: International Conference on Petroleum, Hydrogen & Decarbonization, Indian Institute of Technology Guwahati, India. November 2, 2023. (International Conference)
Jayant Kumar, Rajiv Chaudhary, Shailesh Kumar, “Emulsification of Heavy Crude Oil in Water for Pipeline Transportation – A Review”, Presented in: Presented in: 5th International Oil & Gas Chemistry, Chemicals and Additives Conference (IOGCA 2022), Ahmedabad, India, 2022
Shailesh Kumar, “Demulsification of Concentrated Indian Heavy Crude Oil-in-Water Emulsion: Driven by Chemicals under Heating and Enhanced Gravity”, Presented in: 4th International Oil & Gas Chemistry, Chemicals and Additives Conference (IOGCA 2021), India, 23-24 September 2021 (Virtual mode)
Bhola Kumar Paswan, Shailesh Kumar, “Application of a Sunflower Oil Derived Surfactant for the Development of Oil-in-water (O/W) Emulsion Drilling Mud for Shale Formation”, Presented in: 4th International Oil & Gas Chemistry, Chemicals and Additives Conference (IOGCA 2021), India, 23-24 September 2021 (Virtual mode)
Koyyana Jahnavi, Konala Reshma Reddy, Naren Kumar Reddy Sabadu, Shailesh Kumar, “Computational Fluid Dynamics (CFD) Analysis of Flow Characteristics of Heavy Crude Oil-in-Water Emulsion through Pipelines”, Presented in: 3rd International Biennial Oil, Gas, and Petrochemical Conference (OGPC2020), Bushehr, Iran, 28-29th December 2020 (Virtual mode)
Dangeti Sree Karthik, Ruthala Sumanth, Voora Dheeraj, Shailesh Kumar, “A CFD Analysis on Proppant Transport in Fracture for Foam-Based Fracturing Fluid”, Presented in: 3rd International Biennial Oil, Gas, and Petrochemical Conference (OGPC2020), Bushehr, Iran, 28-29th December 2020 (Virtual mode)
Shailesh Kumar, “Emulsification of an Indian Heavy Crude Oil in Water for Pipeline Transportation in Presence of Tri-triethanolamine Monosunflower Ester”, In: International Conference & Exhibition on Oil Field Chemicals & Treatments (OFCTC 2019), Mumbai, India, 18th- 19th July 2019
Shailesh Kumar, Barasha Deka, and Vikas Mahto, “Application of a novel surfactant and ultrasonic waves for emulsification of an Indian heavy crude oil in water for pipeline transportation”, In: Mineral Processing Technology – 2018, 10-12 Oct, IIT(ISM) Dhanbad, India
Shailesh Kumar, “Ultrasonic emulsification of an Indian heavy crude oil in water for transportation through offshore pipelines”, In: South Asia Regional Student Paper Contest, Society of Petroleum Engineers (SPE), April, 2017. Mumbai, India
Shailesh Kumar and Vikas Mahto, “Application of anionic surfactants for emulsification of an Indian heavy crude oil in water for transportation through offshore pipelines”, In: PEDJP-2017, 12-16 Feb 2017, IIT(ISM) Dhanbad, India
