连续固井泥浆混合器特性及影响因素CFD分析  

CFD Analysis of the Characteristics and Influencing Factors of Continuous Cementing Slurry Mixers

作　　者：毛春林 蔡意 陶云 侯勇俊[1] 刘有平 MAO Chunlin;CAI Yi;TAO Yun;HOU Yongjun;LIU Youping(School of Mechatronics Engineering,Southwest Petroleum University,Chengdu 610500,China;Fracturing Service Company of CNPC Greatwall Drilling Company,Panjin 124010,China;Chuanxi Drilling Company,CNPC Chuanqing Drilling Engineering Co.,Ltd.,Chengdu 610051,China;BOMCO Sichuan Special Vehicle Co.,Ltd.,Guanghan 618300,China)

机构地区：[1]西南石油大学机电工程学院,成都610500 [2]中国石油集团长城钻探工程有限公司压裂公司,辽宁盘锦124010 [3]中国石油集团川庆钻探工程有限公司川西钻探公司,成都610051 [4]四川宝石机械专用车有限公司,四川广汉618300

出　　处：《石油矿场机械》2024年第5期33-42,共10页Oil Field Equipment

基　　金：中国石油天然气集团公司重大科技专项(2019F-30)。

摘　　要：为了对连续固井泥浆混配系统的流动特性进行研究,提出了一种分段式控制仿真方法。采用欧拉多相流模型和多重参考系方法从均匀性计算和功率消耗两个方向分析了叶轮直径、转速等设计因素对泥浆混合效果的影响。结果表明:叶轮直径、转速和粒径均对连续混合系统的泥浆均匀性有显著影响,而功率除受上述因素影响之外还受搅拌轴倾角和设计密度的影响。泥浆均匀性随转速和直径的增大而增加,直径和转速过大,在致使功率显著增加的同时还可能会导致泥浆均匀性下降。所提出的计算模型和方法可为混合器的优化设计提供参考,研究结果可为工程中实现高效固井作业提供指导。In order to investigate the flow characteristics of the continuous well cement slurry mixing system,a segmented control simulation method was proposed to provide a means of analysis.The influence of design variables,including impeller diameter and speed,on the efficacy of slurry mixing was evaluated through the utilization of the Eulerian multiphase flow model and the Multiple Reference Frame(MRF)method,with a particular focus on uniformity and power consumption.The data demonstrate that impeller diameter,speed,and particle size have a significant impact on slurry uniformity in a continuous mixing system.In addition to these factors,power consumption is also influenced by the mixing shaft inclination and design density.An increase in speed and diameter results in an improvement in slurry uniformity.However,the use of excessively large diameters and speeds may not only lead to a significant increase in power consumption but also a decrease in slurry uniformity.The proposed computational model and methodology in this study can serve as a reference for optimizing mixer design,and the research findings offer scientific guidance for achieving efficient well cementing operations in engineering.

关 键 词：固井泥浆 连续混合 流动特性 仿真方法 二次混合 

分 类 号：TE926[石油与天然气工程—石油机械设备]