【摘要】 首先研究了固井作业中，水泥浆滞流与迟流、流核与假流核的不同之处及计算方法；然后应用流体力学理论，推导出最优水泥浆动切力的计算公式，为现场注水泥作业提供了理论依据。更多还原

【Abstract】 In this paper,the difference between by-pass flow and late flow,and the difference between plug flow or true plug flow and pseudoplug flow of cement slurry and the calculation hydraulics of the flow have been studied. The calculating formula of optimum yield point of cement slurry in cementing has been deduced upon fluid mechanics, which can be taken as the theoretical basis of cementing calculation in oilfield.更多还原