🔖 This book illustrates drilling fluids technology, including drilling problems related to drilling fluids. After a general review of mud types , properties and the currently used additives (density agents , viscosifiers , thinners , filtrate reducing agents , alkalinity control agents , emulsifiers , lubricants spotting fluids , lost circulation materials , shale inhibitors and hydrogen sulfide scavengers) are described followed by drilling problems related to drilling fluids.