水泥替置在建井和完井中起着重要作用。在石油工业中用水泥来维持、保护套进,密封储层,以及替置钻井液已经成为必要的过程。处理不好的水泥替置将导致后续补救挤注水泥固井,这是非常昂贵和耗时的。本文用一种新方法即格子Boltzmann方法来模拟水泥替置过程。传统方法,例如有限差分、有限元或有限体积方法对于计算流体动力学存在着严重的问题:计算时间长,不易收敛以及数值不稳定。格子Boltzmann方法是基于Boltzmann方程基础上一种更有效的计算方法。从流体动力学计算中获得环空中钻井液和泥浆速度分布图。由于泥浆特性的影响,对驱替速度分布图上的流入速率进行了研究。水泥窜槽的机率用格子Boltzmann结果进行了讨论。 Cement replacement plays an important role in well construction and completion. It has become necessary to use cement to maintain, secure casing, seal reservoirs and replace drilling fluids in the oil industry. Poorly handled cement replacement will result in subsequent remediation of crowded cement cements, which is very expensive and time consuming. In this paper, we use a new method called lattice Boltzmann method to simulate the cement replacement process. Traditional methods, such as finite difference, finite element or finite volume methods, have serious problems with computational fluid dynamics: long computation times, difficult convergence, and numerical instabilities. Lattice Boltzmann method is based on Boltzmann equation based on a more efficient method of calculation. Annular fluid drilling fluid and mud velocity profiles were obtained from hydrodynamic calculations. Due to the influence of mud properties, the inflow rate on the displacement velocity profile was studied. The probability of cement channeling is discussed using lattice Boltzmann results.