With the advance of Drilling Technology, Drilling mud has increasingly attracted Engineers’ attention; consequently, mud has changed from a simple fluid to a complex mixture of liquids, solids, and chemical components.
For the purpose of reaching this goal, various additives used in drilling mud are discussed in this project thoroughly. Polymers are a group of additives which adjust the drilling mud properties such as viscosity, gelatinization properties, and water loss. Among them, starch, a natural polymer, has attracted more attention. This research provides information on drilling mud and its additives along with a special and comprehensive emphasis on the application of starch, especially pre-gelatinized starch on drilling mud properties.