PATENTS

Elkatatny, S. and Adjei, S, 2023. Use of granite waste powder in lightweight oilwell cement systems; strength analysis. U.S. Patent Application 17/900,360. US Patent 2023/0287257

Elkatatny, S. and Adjei, S, 2023.Calcined saudi calcium bentonite as cement replacement in low-density oil-well cement system. U.S. Patent Application 17/873,863.  US Patent 2023/0287256

RESEARCH PUBLICATIONS

Sokama-Neuyam, Y.A., Amedeka E.,  Ofori, E.O.,  Adjei, S.,  Boakye, P., Tawiah, P.O.,  Kemausuor. F., 2025. Predictive Modelling of the Energy and Climate Cost of Ghana’s Economic Growth. Greenhouse Gases: Science and Technology. http://doi.org/10.1002/ghg.2373

Adumatta, S., Boakye, P., Bediako,M., Sokama-Nueyem, A.Y., Ohemeng-Boaheng, G.,  Adjei, S., 2025. Performance Evaluation of Low-grade Calcined Clay as a Supplementary Cementitious Material for Sustainable Oil-well Cementing. International Journal of Sustainable Engineering. https://doi.org/10.1080/19397038.2025.2550991.

Sokama-Neuyam, Y. A.; Amedeka, E.; Quansah, D. A.; Akowuah, J. O., Adjei, S., Boakye, P., Quaye, J. A., Hameed, M. A., Narh-Dometey, J., Kemausuor, F. 2025. Probabilistic Assessment of Carbon Intensity in Selected Oil and Gas Fields in Ghana. Greenhouse Gases: Science and Technology. https://doi.org/10.1002/ghg.2361

Adjei, S., Takyi-Amponsem, D.Y., Quaye, J.A., Sokama-Neuyam, Y.A., Oleka, J.O., Asigbi, G.K. and Duodu, T.K., 2025. Automated hydraulic flow unit determination using FZI-Z-score probability, K-means clustering with autoencoders, and machine learning classification: A case study of the Subei Basin, China. Journal of Applied Geophysics, p.105778. https://doi.org/10.1016/j.jappgeo.2025.105778

Adjei, S., Gowida, A., Elkatatny, S. and Oleka, J.O., 2025. Optimized Gradient Boosting Models for Adaptive Prediction of Uniaxial Compressive Strength in Carbonate Rocks Using Drilling Data. ACS Omega. 10.1021/acsomega.4c09603.

Quaye, J.A., Sarkodie, K., Jiang, Z., Hu, C., Agbanu, J., Adjei, S. and Li, B., 2024. Application of SVC, k-NN, and LDA machine learning algorithms for improved prediction of Bioturbation: Example from the Subei Basin, China. Earth Science Informatics, pp.1-23. https://doi.org/10.1007/s12145-024-01450-z

Mahmoud, A.A., Abdelaal, A., Adjei, S. and Elkatatny, S., 2024. Foamed Cement Applications in Oil Industry Based on Field Experience: A Comprehensive Review. ACS omega. https://doi.org/10.1021/acsomega.3c07580

Sokama-Neuyam, Y. A., Amezah, S. M., Adjei, S., Adenutsi, C. D., Erzuah, S., Quaye, J. A., Ampomah, W., and Sarkodie, K., 2023. Predictive modeling of energy-related greenhouse gas emissions in Ghana towards a net-zero future. Greenhouse Gases: Science and Technology, https://doi.org/10.1002/ghg.2251

Quaye, J.A., Jiang, Z., Liu, C., Adenutsi, C.D., Adjei, S., Sarkodie, K., Sokama-Neuyam, Y.A., Lemdjou, Y.B. and Uahengo, C.I., 2023. Understanding the role of bioturbation in modifying petrophysical properties: a case from well L5 of the third-member Paleocene Funing Formation (E1f3), Gaoyou Sag, Subei Basin, China. Arabian Journal of Geosciences, 16(7), p.407. https://doi.org/10.1007/s12517-023-11506-x

Adjei, S., Elkaktatny, S., Sokama-Neuyam, Y.A., Sarkodie, K. and Quaye, J.A., 2023. Evaluation and remediation techniques for barite sagging: A review. Geoenergy Science and Engineering, p.211731. https://doi.org/10.1016/j.geoen.2023.211731

Obeng, J., Andrews, A., Adom-Asamoah, M. and Adjei, S., 2023. Effect of calcium carbide residue on the sulphate resistance of metakaolin-based geopolymer mortars. Cleaner Materials, p.100177. 10.1016/j.clema.2023.100177

Adjei, S., Elkatatny, S. and Sarmah, P., 2023. Evaluation of Granite Waste Powder as an Oil-Well Cement Extender. Arabian Journal for Science and Engineering, pp.1-12. https://doi.org/10.1007/s13369-022-07550-6

Ahmed, A., Adjei, S. and Elkatatny, S., 2023. Analysis of the Impact of Vermiculite on Hematite-Based Cement Systems.  ACS Omega. https://doi.org/10.1021/acsomega.2c06289

Adjei, S., Abdelaal, A., Elkatatny, S. and Abdelfattah, A.M., 2022. Durability of lightweight oil-well geopolymer system in sulfate environment. Journal of Petroleum Exploration and Production Technology, pp.1-10. https://doi.org/10.1007/s13369-022-07550-6

Adjei, S., Elkatatny, S. and Ayranci, K., 2022. Effect of Elevated Temperature on the Microstructure of Metakaolin-Based Geopolymer. ACS omega, 7(12), pp.10268-10276. https://doi.org/10.1021/acsomega.1c06878                                                                                

Adjei, S., Elkatatny, S., Ayranci, K. and Sarmah, P., 2022. Evaluation of Qusaiba Kaolinitic Shale as a Supplementary Cementitious Material in Lightweight Oil-Well Cement Formulation. ACS Omega.

 Adjei, S., Elkatatny, S., Aggrey, W.N. and Abdelraouf, Y., 2022. The Feasibility of Using Geopolymer in Oil-Well Cementing: A Review. Presented at the International Petroleum Technology Conference (IPTC), 21-23 February, Riyadh, Saudi Arabia. IPTC-22130-MS  https://doi.org/10.2523/IPTC-22130-MS

Adjei, S., Elkatatny, S., Aggrey, W.N. and Abdelraouf, Y., 2021. Geopolymer as the future oil-well cement: A review. Journal of Petroleum Science and Engineering, p.109485.

Alafnan, S., Awotunde, A., Glatz, G., Adjei, S., Alrumaih, I. and Gowida, A., 2021. Langmuir adsorption isotherm in unconventional resources: Applicability and limitations. Journal of Petroleum Science and Engineering, p.109172.

Adjei, S., Elkatatny, S. and Al-Majed, A., 2021. Effect of bentonite prehydration time on the stability of lightweight oil-well cement system. Geofluids, vol. 2021, https://doi.org/10.1155/2021/9957159

Adjei, S., Elkatatny, S., Sarmah, P., and Abdelfattah, A.M., 2021. Evaluation of calcined saudi calcium bentonite as cement replacement in low-density oil-well cement system. Journal of Petroleum Science and Engineering. https://doi.org/10.1016/j.petrol.2021.108901

Adjei, S., Elkatatny, S., Sarmah, P. and Chinea, G., 2021. Investigation of Dehydroxylated Sodium Bentonite as a Pozzolanic Extender in Oil-Well Cement. SPE Drilling & Completion, 36(03), pp.730-737.

Adjei, S., Bageri, B.S., Elkatatny, S. and Adebayo, A., 2021. Effect of perlite particles on barite cement properties. ACS omega, 6(7), pp.4793-4799. https://doi.org/10.1021/acsomega.0c05699

Adjei, S., Elkatatny, S. and Abdelfattah, A.M., 2020. New lightweight cement formulation for shallow oil and gas wells. ACS Omega. https://doi.org/10.1021/acsomega.0c05174

Adjei, S., Elkatatny, S., Overview of the lightweight oil-well cement mechanical properties for shallow wells, Journal of Petroleum Science and Engineering, https://doi.org/10.1016/j.petrol.2020.108201.

Adjei, S. and Elkatatny, S., 2020. A highlight on the application of industrial and agro wastes in cement-based materials. Journal of Petroleum Science and Engineering, 195. p.107911. DOI: 10.1016/j.petrol.2020.107911

Ahmed, A., Elkatatny, S., Adjei, S. and Al-Majed, A., 2020. Influence of weighting materials on the properties of oil-well cement. ACS omega, 5(42), pp.27618-27625. https://doi.org/10.1021/acsomega.0c04186

Mohammed, I., Afagwu, C.C., Adjei, S., Kadafur, I.B., Jamal, M.S. and Awotunde, A.A., 2020. A review on polymer, gas, surfactant and nanoparticle adsorption modeling in porous media. Oil & Gas Science and Technology–Revue d’IFP Energies nouvelles, 75, p.77. https://doi.org/10.2516/ogst/2020063

Aggrey, N.W., Asiedu, N.Y., Tackie-Otoo, B.N., Adjei, S. and Mensah-Bonsu, E. 2019. Performance of carboxymethyl cellulose produced from cocoa pod husk as fluid loss control agent at high temperatures and variable (low and high) differential pressure conditions-part 1. Journal of Petroleum Science and Technology 9(4), 22-38.

Opoku, D., Al Shehri, D., Adjei, S., 2019. Holistic approach to estimate water breakthrough; a case study. SPE Kuwait Oil & Gas Show and Conference, 13-16 October, Mishref, Kuwait. Society of Petroleum Engineers. https://doi.org/10.2118/198143-MS

Adjei, S., Aggrey, N.W., Opoku, D., and Mohammed, I. 2019. Probabilistic approach for shale volume estimation in Bornu Basin of Nigeria. Journal of Petroleum and Gas Engineering. Vol. 10(4), pp. 49-54. Academic Journals. https://academicjournals.org/journal/JPGE/article-fulltext-pdf/9394BAA61661