论述壁面剪应力在提高固井水泥浆顶替效率的研究

固井工程是一项应用工程,是建井过程中的重要环节,它直接影响钻井周期和建井成本,以及油田开发方案的实施。深井、超深井的井下地质条件非常复杂,对固井质量有许多不利的因素,在井下条件确定的情况下,决定性的因素是环空流动的壁面剪应力,它是影响顶替效率的主要因素。

Study on the Research of Wall Shear Stress on Improving the Displacement Efficiency of Well Cementation Cement Paste

Well cementation works is application engineering and is an important part in the building process,it directly affects the drilling cycle,cost of building wells and oil field development program implementation.Underground geological conditions in deep and ultra deep well are complicated which causes many unfavorable factors for the quality of the well cementation.With the identified underground conditions,the decisive factor is the flow annular wall shear stress,which is the main factor affecting the efficiency of replacement.