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[1]成芳,易先中,彭灼,等.页岩气压裂弯管中液固两相流冲蚀磨损的数值模拟[J].中国安全生产科学技术,2019,15(11):29-35.[doi:10.11731/j.issn.1673-193x.2019.11.005]
　CHENG Fang,YI Xianzhong,PENG Zhuo,et al.Numerical simulation on erosion wear in shale gas fracturing bend pipe with liquidsolid twophase flow[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2019,15(11):29-35.[doi:10.11731/j.issn.1673-193x.2019.11.005]
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页岩气压裂弯管中液固两相流冲蚀磨损的数值模拟
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
15
期数:
2019年11期
页码:
29-35
栏目:
学术论著
出版日期:
2019-11-30

文章信息/Info

Title:
Numerical simulation on erosion wear in shale gas fracturing bend pipe with liquidsolid twophase flow
文章编号:
1673-193X(2019)-11-0029-07
作者:
成芳; 易先中; 彭灼; 周元华; 宋顺平; 盛治新; 殷光品
(1.长江大学 机械工程学院，湖北 荆州 434000；
2.中国石油集团川庆钻探工程有限公司长庆钻井总公司，陕西 西安 710021；
3.青岛金江源工业装备有限公司，山东 青岛 266111；
4.湖北佳业石油机械股份有限公司，湖北 荆州434000）
Author(s):
CHENG Fang;  YI Xianzhong;  PENG Zhuo;  ZHOU Yuanhua;  SONG Shunping;  SHENG Zhixin;  YIN Guangpin
(1.School of Mechanical Engineering,Yangtze University,Jingzhou Hubei 434000,China;
2.Changqing Drilling Company,CNPC Chuanqing Drilling Engineering Co.,Ltd.,Xi'an Shaanxi 710021,China;
3.Qingdao Jinjiangyuan Industrial Equipment Co.,Ltd.,Qingdao Shandong 266111,China;
4.Hubei Jiaye Petroleum Machinery Co.,Ltd.,Jingzhou Hubei 434000,China)
关键词:
水力压裂; 弯管; 冲蚀磨损; 运动轨迹; 斯托克斯数; 安全防护
Keywords:
hydraulic fracturing;  bend pipe;  erosion wear;  movement trajectory;  Stokes number;  safety protection
分类号:
X937
DOI:
10.11731/j.issn.1673-193x.2019.11.005
文献标志码:
A
摘要:
为了研究超高压水力压裂下支撑剂颗粒进入弯管后冲蚀磨损区域的变化特性。基于液-固两相流理论、Fluent冲蚀模型建立弯管冲蚀模型，结合弯管内流场分析颗粒运动轨迹，引入斯托克斯数（St）探究冲蚀磨损区域变化，并进行数值分析。研究结果表明：弯管中冲蚀磨损发生区域有5处，主要严重区域有3处，弯管流场会改变固体颗粒数量及对壁面冲击动能与运动轨迹，St变化会明显引起冲蚀磨损区域的规律性变化；随着St从0~1至St>1变化，弯管段内壁面外侧（液体进入弯管后的正对区域）与直管段靠近弯管段的侧方区域的冲蚀磨损情况呈现“此消彼长”的规律性差异；管径越小，最大冲蚀速率的增长幅度越明显，增大管径，是减小冲蚀磨损的有效途径。研究结果对压裂弯管的改进设计及管道安全防护具有指导作用。
Abstract:
To study the change characteristics of erosion wear areas when the proppant particles enter the bend pipe under the ultrahigh pressure hydraulic fracturing,a model on the erosion of bend pipe was established based on the liquidsolid twophase flow theory and the Fluent erosion model.The movement trajectories of particles were analyzed combining with the flow field in the bend pipe,then the change of erosion wear areas was studied by introducing into the Stokes number (St) ,and the numerical analysis was carried out.The results showed that there were five erosion wear areas in the bend pipe,and three main serious areas.The flow field in the bend pipe could change the number,impact kinetic energy on wall and movement trajectories of solid particles,and the change of St would obviously cause the regular change of erosion wear areas.With the change of St from 0 to 1 and greater than1,the erosion wear situation on the external side of inner wall in the bend pipe section (directly facing area of liquid entering bend pipe) and the lateral area of straight pipe section near the bend pipe section presented the regular difference of “wane and wax”.The smaller the pipe diameter,the more obvious the increase amplitude of the maximum erosion rate,so increasing the pipe diameter was an effective way to reduce the erosion wear.The results have guiding significance for the improved design of fracturing bend pipe and safety protection of pipeline.

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备注/Memo

备注/Memo:
收稿日期： 2019-08-01
* 基金项目： 国家自然科学基金项目（U1762214，51974035，U1262108）；国家科技重大专项(2017ZX05009-003，2016ZX05022006-004）；湖北省技术创新专项(2016ACA181)；国土资源部深部地质钻探技术重点实验室开放课题（KF201806）
作者简介： 成芳，硕士研究生，主要研究方向为流体机械设计及机电一体化技术。
通信作者： 易先中，博士，教授，主要研究方向为油气钻采机械及其智能化。
更新日期/Last Update: 2019-12-25