This book presents petroleum geosciences as an interdisciplinary field that combines geological understanding with engineering, environmental analysis, and resource exploration. It examines the scientific principles that explain the formation, distribution, and behaviour of subsurface resources, highlighting the role of geochemical and geological processes in energy exploration. The text considers how earth materials, environmental conditions, and geological structures influence the identification and extraction of petroleum resources. It also reflects on the relationship between geoscience and technological development, illustrating how scientific investigation supports efficient and responsible resource management. Attention is given to broader professional and institutional dimensions within the geosciences, including participation, diversity, and evolving approaches to scientific practice. By connecting theoretical foundations with applied perspectives, the book offers a balanced understanding of contemporary petroleum geoscience.

The book aims to develop the reader’s knowledge of geological and geochemical systems, enabling informed engagement with petroleum exploration, earth science research, and modern developments within the wider field of geosciences.