Xanthan gum, also known as xanthan gum, is a microbial extracellular substance with a wide range of functions produced by Xanthomnas campestris through fermentation engineering using carbohydrates as the main raw material (such as corn starch). polysaccharide. It has unique rheology, good water solubility, stability to heat and acid and alkali, and good compatibility with a variety of salts. It can be widely used as a thickener, suspending agent, emulsifier, and stabilizer. It is used in more than 20 industries such as food, petroleum, and medicine. It is currently the largest production scale and extremely versatile microbial polysaccharide in the world.
Applications in industry and agriculture: In the petroleum industry, due to its strong pseudoplasticity, a low concentration of xanthan gum (0.5%) aqueous solution can maintain the viscosity of the drilling fluid and control its rheological properties. Therefore, the viscosity of the drill bit in high-speed rotation is It is extremely small, which saves power; but maintains high viscosity in the relatively stationary drilling area, thereby preventing the well wall from collapsing. And because of its excellent salt resistance and heat resistance, it is widely used in drilling in special environments such as oceans and high-salt areas. It can also be used as an oil recovery and displacement agent to reduce dead oil areas and improve oil recovery.
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