1. Petroleum Reservoir Engineering Practice — Nnaemeka Ezekwe

Overview: A comprehensive, practice-oriented guide for reservoir engineers, covering pressure-transient analysis, water/gas flooding, and enhanced oil recovery (EOR). It's rich with real-world examples and field case studies, making it a standout resource.

2. Elements of Petroleum Refinery Engineering — O. P. Gupta

Overview: A detailed and industry-respected text on refining processes—ideal for UG/PG students and professionals. It spans crude treatment, catalytic reforming, distillation, and isomerization, with updated case studies and process design insights.

3. Reservoir Engineering Handbook — Tarek Ahmed

Overview: A comprehensive reference that spans reservoir modeling, well testing, production forecasting, and EOR. Regularly recommended by petroleum engineers for its depth and proven methodologies.

4. Introduction to Petroleum Engineering — John R. Fanchi & Richard L. Christiansen

Overview: A concise yet broad textbook offering an introduction to drilling, reservoir, production engineering, and fluid properties. Known for clarity and useful problem sets across disciplines.

5. Drilling Engineering — J. J. Azar & G. Robello Samuel

Overview: A key reference for drilling operations—covering rig selection, drilling fluid hydraulics, well control, and optimization techniques. It’s widely endorsed by industry professionals and students alike.