本文利用数量化理论Ⅰ的原理和方法,综合考虑了钻井循环过程中定量变量和定性变量对钻井循环压降的影响关系,并通过对5口井共54组实钻数据的处理,建立了钻井循环压降计算的数量化模型。结果表明,此模型能就定性变量(如泥浆类型)对循环压降的影响作出定量分析,并有较好的计算精度,可以弥补理论计算法的不足之处。 Based on the theory and method of quantitative theory Ⅰ, the paper takes into account the relationship between quantitative variables and qualitative variables in drilling cycle pressure drop during the drilling cycle, and through the processing of a total of 54 sets of real drilling data of 5 wells, Numerical model of cyclic pressure drop calculation. The results show that this model can quantitatively analyze the effect of qualitative variables (such as mud type) on the pressure drop and has better calculation accuracy, which can make up for the deficiencies of the theoretical calculation method.