不同筛面形式振动筛颗粒运移的DEM模拟  

Particle Migration DEM Simulation of Shale Shaker under Different Screen Surface Shape

作　　者：吴先进 李圣一 方潘 席仲君[4] 侯勇俊[3] 刘有平 

机构地区：[1]四川宝石机械专用车有限公司,四川广汉613800 [2]东方锅炉股份有限公司,四川自贡643001 [3]西南石油大学机电工程学院,四川成都610500 [4]川庆钻探工程有限公司川西钻探公司,四川成都610051

出　　处：《机械研究与应用》2017年第5期45-49,共5页Mechanical Research & Application

基　　金：国家自然科学基金项目:基于复频振动的钻井液筛分机理研究(编号:51074132)

摘　　要：建立了凸、凹和平直三种筛面形式的振动筛离散元筛分模型,并采用JKR湿颗粒接触模型模拟了钻井液振动筛上的颗粒运移与透筛特性。研究结果表明,平直筛面的振动筛的筛分能力良好,筛面上分固相颗粒具有运移速度快、分布均匀特点;凹形筛面筛分能力较差,固相颗粒容易在筛面凹部堆积;凸形筛面振动筛的筛分能力也弱于平直筛面的振动筛,固相颗粒也容易在筛面两侧堆积。研究结果对钻井振动筛设计和筛分能力评价具有重要参考意义。The discrete element screening model of sieve with three kinds of screen surface shape that include convex,concave and flatten is established. Moreover,the JKR wet particle contact model is used to simulate the particle migration and screening characteristics of the shale shaker. The findings show that the sieving ability of the oscillating screen with the straightness screen surface is favorable,and the solid particles on the screen surface have the characteristics of fast moving speed and uniform distribution. On the contrary,the sieving capacity of the concave sieve is poor,and the solid particles are easily accumulated in the concave location in the screen surface. The sieving capacity of the vibrating sieve which has convex screen is also weaker than that of the flat screen sieve,and the solid particles are also easily accumulated on both sides of the screen surface.The research results have important referential significance for the design of drilling vibration sieve and evaluation of the screening capacity.

关 键 词：振动筛 张紧方式 离散元法 JKR湿颗粒 

分 类 号：TE926[石油与天然气工程—石油机械设备]