SDR is a new kind of nonpoisonous and non-fluoresce lubricant which can form strong adsorptive film both on metal and clay. SDR can enhance the lubricity of drilling fluid effectively, reduce the abrasion of drill bit and other equipment, and hence lengthen the service life.It can prevent from pipe sticking and bit balling and make down hole complexity easy to handle. SDR is applicable for any type of water-base drilling fluid and especially suitable to directional well located in area of harsh environment.
