Abstract: In tmis paper,the displacement mechanism of laminar flow cementing in deviated wellshas been studied based on mathematical models of displacement which are used to describethe displacing process of cementing have been presented,including vertical wells,horizontalwells,and deviated wells.Using the numerical method,the displacement models of the verti-cal and the horizontal wells have been estabblished and a few usefulconclusions have been ob-tained.Using our experimental data and those from other paper,theoretical models of this pa-per are examined,it is found that these models are basically identical to the experiment data.

Key words: horizontal well, deviated well, cementing, displacement, mathematical model, experiment data

摘要： 根据流体力学理论,研究了定向井层流注水泥的顶替机理.提出了反映注水泥顶替过程的顶替数学模式,其中包括垂直井、水平井及定向并的注水泥顶替数学模式.利用数值方法,求解了垂直井、水平井的顶替模式,并得出一些有用的结论.利用前人及本文的实验数据,对部分数学模式进行了检验,其吻合程度满足工程要求.

关键词: 水平井, 定向井, 注水泥, 顶替, 数学模式, 实验数据