This paper present the sixteen types of drilling fluid chemicals manufactured in china and describe some important chemicals in detail. The consumption of drilling fluid chemicals is listed on different types for each year. The tendency of consumption of chemicals is analyzed. According to API Classification of drilling fluid and characteristics of Chinese drilling fluid application, drilling fluids are classed in nine types. Explanation and formulations of nine types of drilling fluid are presented in this paper. The recent development of drilling fluids is presented in this paper. The recent development of drilling fluid chemicals and drilling fluid systems is analyzed. The mechanism and formulation of these new drilling fluids are presented. Nowadays, drilling fluid chemicals manufactured in china can satisfy the native market, some of them are exported to abroad market.

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