离心式真空除气器的数值模拟与结构优化  

Numerical Simulation and Structure Optimization of the Centrifugal Type Vacuum Degasser

作　　者：吴继尧 李明晓 Wu Ji-yao;Li Ming-xiao

机构地区：[1]中国石油工程建设有限公司北京设计分公司,北京100085 [2]中国石油集团济柴动力有限公司,山东济南250000

出　　处：《化工设计通讯》2018年第12期117-119,共3页Chemical Engineering Design Communications

摘　　要：在钻探过程中,如何去除侵入钻井液的气体是保证钻探现场安全生产的重要问题。以现有的离心式真空除气器为模型进行改进,在保留原机离心和抽真空工艺的同时,通过加装锥形板的方式增大气泡在除气器内的流动时间。使用CFD流体分析软件对设备内的流场进行仿真,分析除气器内部两相流流场的分布和影响除气效率的因素,并对除气器结构进行优化。根据仿真结果,该新型除气器具有良好的除气性能,能够满足现场对于钻井液除气的要求。In the process of drilling,how to separate bubbles in the drilling fluid is an important question to assure the safety of oil drilling.In this paper,the existing centrifugal vacuum deaerator as a model for improvement,through the way of adding cone plate increases the flowing time of bubbles in deaerator,while keeping the original process of machine.Using CFD software to simulation the flow field in deaerator,analyse the distribution of internal flow field of two phase flow and the influence factor of degassing efficiency,and optimize the structure of deaerator.According to the simulation results,the new type centrifugal vacuum deaerator has good performance,can satisfy requirements for drilling fluid degassing.

关 键 词：离心式除气器 气液两相流 流场 除气效率 数值模拟 

分 类 号：TE927[石油与天然气工程—石油机械设备]