The aim of this text is to deliver a rich and industry-relevant discussion on flow assurance, with sufficient fundamental content to facilitate learning in the classroom, and sufficient application guides and examples to serve practicing engineers. The scope of the book includes a detailed and applied discussion on thermodynamics, multiphase flow, and hydrocarbon-based solids for flow assurance engineers currently in practice or training. The text has been organized to provide a fundamental (molecular-scale) perspective on each of the three themes, while maintaining a focus on the engineering models and tools available for each theme.