| International Petroleum Fiscal Systems Analysis | pennwellbooks.com | 299 USD | 1,440 USD | −79.2% |
| Petroleum Refining in Nontechnical Language, Video Series (10-DVD Set) | pennwellbooks.com | 468 USD | — | — |
| Renewable Energy: A Nontechnical Guide | clnzbooks.com | 252 USD | — | — |
| Wireline Formation Testing and Well Deliverability | pennwellbooks.com | 239 USD | — | — |
| Well Test Design and Analysis | pennwellbooks.com | 239 USD | — | — |
| Subsea Pipeline Engineering, 2nd Edition | pennwellbooks.com | 239 USD | — | — |
| Essentials of Hydraulic Fracturing: Vertical and Horizontal Wellbores | pennwellbooks.com | 203 USD | — | — |
| Dictionary of Petroleum Exploration, Drilling & Production, 2nd Edition | pennwellbooks.com | 191 USD | — | — |
| Air-Cooled Heat Exchangers and Cooling Towers: Thermal-Flow Performance Evaluation and Design, Volume 2 | pennwellbooks.com | 180 USD | — | — |
| Air-Cooled Heat Exchangers and Cooling Towers: Thermal-Flow Performance Evaluation and Design, Volume 1 | pennwellbooks.com | 180 USD | — | — |
| Drilling Engineering | pennwellbooks.com | 180 USD | — | — |
| Natural Gas Production Engineering | pennwellbooks.com | 179 USD | — | — |
| Fundamentals of Coalbed Methane Reservoir Engineering | pennwellbooks.com | 179 USD | — | — |
| Practical Reservoir Simulation | pennwellbooks.com | 179 USD | — | — |
| Practical Enhanced Reservoir Engineering: Assisted with Simulation Software | pennwellbooks.com | 179 USD | — | — |
| Ten Commandments of Truck Company Operations: Full Day Seminar DVD | trainyourprobie.com | 178.95 USD | — | — |
| Applied Seismology: A Comprehensive Guide to Seismic Theory and Application | pennwellbooks.com | 167 USD | — | — |
| Troubleshooting Process Operations, 5th Edition | pennwellbooks.com | 167 USD | — | — |
| Project Economics & Decision Analysis: Deterministic and Probabilistic Models, 3rd Edition | pennwellbooks.com | 167 USD | — | — |
| Integrated Waterflood Asset Management | pennwellbooks.com | 167 USD | — | — |
| Distillation & Hydrocarbon Processing Practices | pennwellbooks.com | 167 USD | — | — |
| Fundamentals of International Oil & Gas Law | pennwellbooks.com | 167 USD | — | — |
| Properties of Petroleum Fluids, 3rd edition | pennwellbooks.com | 167 USD | — | — |
| Computer-Assisted Reservoir Management | pennwellbooks.com | 160 USD | — | — |
| Control Room Operator's Handbook: At-the-ready Control Room & Operations Center Guidance | pennwellbooks.com | 155 USD | — | — |
| Practical Well Planning and Drilling Manual | pennwellbooks.com | 155 USD | — | — |
| Fundamentals of Oil & Gas Accounting, 6th Edition | pennwellbooks.com | 155 USD | — | — |
| Horizontal Well Technology | pennwellbooks.com | 155 USD | — | — |
| Cased Hole and Production Log Evaluation | pennwellbooks.com | 155 USD | — | — |
| The Guide to Hydropower Mechanical Design | pennwellbooks.com | 150 USD | — | — |
| Managing Pipeline Threats | pennwellbooks.com | 145 USD | — | — |
| Pipeline Risk Assessment: The Definitive Approach And Its Role In Risk Management | pennwellbooks.com | 145 USD | — | — |
| Natural Gas Production: Engineering Essentials & Best Practices | pennwellbooks.com | 139 USD | — | — |
| Fundamentals of Marine Riser Mechanics, 2nd Edition | pennwellbooks.com | 139 USD | — | — |
| Gas Lift Manual | pennwellbooks.com | 139 USD | — | — |
| International Energy Markets: Understanding Pricing, Policies, and Profits, 2nd Edition | pennwellbooks.com | 138 USD | — | — |
| Worldwide Practical Petroleum Reservoir Engineering Methods, 2nd edition | pennwellbooks.com | 131 USD | — | — |
| Integrated Petroleum Reservoir Management: A Team Approach | pennwellbooks.com | 131 USD | — | — |
| International Petroleum Accounting, 2nd edition | pennwellbooks.com | 131 USD | — | — |
| Gas Usage & Value | pennwellbooks.com | 131 USD | — | — |