作　　者： ; ; ; ; ;

机构地区： 西安石油大学机械工程学院

出　　处： 《石油机械》 2015年第9期61-65,共5页

摘　　要： 鉴于国内外运用多相流数值模拟方法对水力喷射工具冲蚀研究有待深入的现状,基于多级水力喷射工具单级喷枪,采用颗粒碰撞的欧拉-拉格朗日离散相模型,对水平井水力喷砂射孔过程进行流场分析及冲蚀速率计算。分析了单级喷枪上、下游喷嘴流场分布的不均匀性,以及这种不均匀性导致的工具内部各个喷嘴冲蚀速率的差异。分析结果表明,水力喷砂射孔过程中,水力喷射工具单级喷枪上、下游喷嘴流场呈现不均匀性,上游喷嘴单位时间通过的液体多于下游喷嘴,下游喷嘴的砂浓度高于上游3个喷嘴;水力喷射工具单级喷枪内壁面和外壁面都会受到液固两相流体的严重冲蚀,最大冲蚀速率发生在喷枪内壁下游喷嘴入口区域。 In view that further study is still needed on the hydraulic jetting tool erosion by multiphase flow nu- merical simulation methods, based on particle collision Euler-Lagrange discrete phase model and using a multi- stage hydraulic injection tool single-stage gun, flow field analysis and erosion rate calculation have been conducted for horizontal well hydraulic perforation with slurry fluids. The nonuniformity flow field of the upstream and down- stream nozzles of the single-stage gun and the resulted erosion rate differences of each nozzle are analyzed. The re- sults show that the flow field of the upstream and downstream nozzles of the single-stage gun is nonuniform. The flow rate of the upstream nozzle is larger than the downstream nozzle while the sand concentration is smaller than the downstream nozzle. The interior and exterior walls of gun surface will be subject to severe erosion of liquid-solid two- phase flow. The maximum erosion rate occurs in the inlet area of downstream nozzle. The maximum erosion rate in- creases with the increase of displacement.

关 键 词： 水力喷射工具 液固两相流 冲蚀速率 单级喷枪 流场分析 数值模拟

领　　域： [石油与天然气工程]