Corrosion and scale in crude oil systems are two of the most costly problems facing oil companies, which go to great expense to effectively control the problems. Corrodible surfaces are found throughout production, transport, and refining equipment. Therefore, the protection of this equipment is critical to the profitability and successful operation of these companies. While scale control ranks lower in importance, its presence is also costly in terms of equipment damage. This book provides understanding of these processes, their impact on petroleum companies, and potential solutions and inhibitors.