Beyond Volumes is not a book about finding hydrocarbons. It is a book about what happens after you do. In the upstream oil and gas industry, technical success is common. Commercial success is not. Discoveries are made, resources are estimated, and volumes are celebrated — yet a significant proportion of these discoveries never become producing assets. They are deferred, stranded, or quietly written off. Why? Because volume is not value. Drawing on real industry patterns and hard-earned experience, Beyond Volumes challenges one of the most deeply embedded assumptions in subsurface work: that bigger discoveries are inherently better. Through practical frameworks, realistic scenarios, and clear commercial reasoning, this book shows why that assumption fails — and what to do instead. This is not a finance textbook. It is not an engineering manual. It is a guide for geoscientists and subsurface professionals who want to: • Understand how development cost, infrastructure, time, and market shape value • Evaluate opportunities beyond volumetrics • Design appraisal programs that answer commercial questions • Communicate discoveries with credibility and realism • Transition from technical contributor to strategic partner At its core, this book is about one shift: From asking “How much is there?” To asking “Under what conditions does this create value?” For those who want their work to matter not just technically, but commercially — this is where the shift begins.