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With the continuous development of drilling fluid technology, there are more more types of drilling fluids. At present, there are various classification methods for drilling fluids both domestically internationally. There are several simpler classification methods:
According to their density, they can be divided into non weighted drilling fluids weighted drilling fluids.
According to the strength of its hydration with clay, it can be divided into non controlled drilling fluids controlled drilling fluids.
According to their different solid content, those with lower solid content are called low solid drilling fluids, while those that do contain solid are called solid-free drilling fluids.
However, the general classification method referred to is based on the composition characteristics of the fluid medium system in the drilling fluid.
