本文详细论述了温度和压力对钻井液流变性影响的机理、试验结果及实际应用。文中列举了温度、压力、剪切应力、剪切速率等之间的关系，以及试验中所用的各种模型，并举例说明了各种模型在实际钻井作业中的应用。 This paper discusses in detail the mechanism of temperature and pressure on drilling fluid rheology, test results and practical application. The paper lists the relationship between temperature, pressure, shear stress, shear rate and so on, as well as the various models used in the experiment, and illustrates the application of various models in actual drilling operations.