基于离散单元法的双振型下钻井液振动筛不同颗粒筛分效率对比研究

打开文本图片集

中图分类号：TE94 文献标志码：A

Abstract：Linear elliptical shale shakerand translational eliptical shale shaker are two development forms of driling fluid shale shaker.It is valuable and significant to study the screening efficiency of the two forms under different working parameters for actual production and selection.Based on the discrete element method，this paper uses EDEM calculation and analysis software to simulate the screening efficiency of driling fluid shale shaker under linear array and eliptical array，study the movement parameters and movement times of various particles under two forms，and calculate the parameters of screen penetration and screen mouth desieving.It is found that under the same vibration parameters，the linear vibration mode is better than the elliptical vibration mode in dealing with impervious particles，while the translational elliptical vibration mode is beter than the linear vibration mode in avoiding particle cluster formation.The greater the particle adhesion is，the more times the particles make parabolic movements on the screen，and theformation of particle clusters reduces the particle migration speed，leading to the reduction of the screen treatment effciency of impervious particles in theunit time.In practice，the formationof particle clusters should be avoided as much as possible.In the vibration frequency range of 25～30Hz ，the influence of adhesion on particle velocity increases rapidly，thus reducing the exit screening rate.

Key Words：driling fluid shaker;dual vibration mode;discrete element method;EDEM;screening effciency

钻井液振动筛作为一级固控设备在固控系统中得到广泛应用，随着工业的不断发展，振动筛发展了不同轨迹振型。（剩余9087字）