压裂液流速差对井口八通注入头冲蚀磨损影响  

Effects of Fracturing Fluid Velocity Contrast on the Erosion Wear of Wellhead Eight-way Injector Head

作　　者：邹凤彬 邱亚玲[1] 祖宝华 

机构地区：[1]西南石油大学机电工程学院,成都610500 [2]中国石油天然气管道局第一工程分公司,河北廊坊065000

出　　处：《石油矿场机械》2016年第7期13-19,共7页Oil Field Equipment

基　　金：国家自然科学基金项目"气体钻井钻具与井壁碰摩机理及量化评价方法研究"资助(No.50804040);石油天然气装备教育部重点实验室项目(OGE201403-17)

摘　　要：对页岩气井进行"井工厂"拉链式压裂,施工压力高、排量大。井口八通注入头有6根注入管线,在高速压裂液的冲刷作用下,极易发生冲蚀磨损。基于液-固两相流模型和冲蚀理论建立井口八通注入头冲蚀模型,研究了流速差对井口八通注入头冲蚀速率的影响。研究表明:井口八通注入头的最大冲蚀速率主要发生在注入管线与注入头主管线相连的部位;在一定速度差范围内,流速差越大,井口八通注入头的冲蚀速率越大,可以通过注入管线的连通来降低流速差,达到减小井口八通注入头冲蚀速率的目的。研究结果为减少井口八通注入头的冲蚀磨损提供了一定的参考。For shale gas“wells factory”zipper fracturing construction of high pressure,large dis-placement,wellhead eight-way injector head has six injection pipelines,under the action of high-speed fracturing fluid is used to send severe erosion wear.Based on liquid-solid two-phase flow dynamics and erosion theory,the wellhead eight-way injector head erosion wear model is estab-lished,Then this model was applied to study how the velocity contrast effect the erosion wear of wellhead eight-way injector head of shale gas fracture.The studies demonstrated that the maxi-mum rate of wellhead eight-way injector head erosion occurred in the area where the injection pipeline and the injection head connected to the main line;within a certain range,the greater the velocity contrast,the greater the erosion rate of wellhead eight-way injector head,can by injection pipeline connected to reduce the velocity contrast,to achieve the purpose of reducing the erosion rate of wellhead eight-way injector head.The research results provide a reference for reducing the erosion wear of the wellhead eight-way injector head.

关 键 词：页岩气 拉链式压裂 注入头 冲蚀磨损 数值模拟 

分 类 号：TE931.107[石油与天然气工程—石油机械设备]