固液分离机中岩屑颗粒沉降规律研究

岩屑在钻井液中的沉降速度、沉降阻力、流动分布等已成为钻井工艺设计中的重要参数。岩屑在钻井液中的运动十分复杂，这些参数很难用纯解析方法获得。文章从岩屑颗粒与液相介质之间的相互作用入手，采用理论分析和试验研究相结合的方法，参照经验公式,讨论了固液动态压滤分离机中岩屑颗粒的沉降规律，对动压机内颗粒的受力情况、轴向沉降、离心力场沉降等问题进行了理论探讨和研究，得出了岩屑颗粒离心沉降末速度。

STUDY ON SEDIMENTATION LAW OF CUTTING GRAINS IN SOLID/LIQUID SEPARATOR 1)

The sediment velocity, sediment resistance and flow distribution of cuttings in drilling fluid has become the important parameters of the drilling process design. The movement of cuttings in the drilling fluid is very complicated. It is difficult to get the parameters by analytical method. According to the interaction between the cutting grains and the liquid medium, integrating the theoretic analysis with experiments, and referencing the experimental formula, the sedimentation law of cutting grains in the dynamic solid/liquid separator by compressing and filtering is discussed. The theoretical exploration and research are conducted on the grain-forcing situation, axial sedimentation, sedimentation in the centrifugal force field etc., and the final sedimentation velocity of the cutting grains is obtained in the separator.