The precipitation of solids is an elusive problem in the production of oil and gas. Flow assurance is the industrial term used to describe the phenomena of precipitation and deposition of solids and to offer technical solutions. A multitude of mechanisms are responsible for precipitation and deposition of solids in oil and gas production. This book deals with the basic phenomena regarding the occurrence of obstructions by solids. It futher discusses the four most common solids in gas and oil: aspahltene, paraffin wax, gas hydrate and inorganic solids, thus providing a guide on their occurrence and prevention. The book combines all relevant information on solids for the oil and gas industry in one text with detailed appendices, tables and diagrams for more specialist information.