分层注水井配水器水嘴压力损失规律分析  

Analysis on the Pressure Loss Law of Water Nozzles in Layered Water Injection Wells

作　　者：刘兴斌[1] 李善文 邓宇恒 何壮 姜盼琴 陈立东 谌辰 LIU Xingbin;LI Shanwen;DENG Yuheng;HE Zhuang;JIANG Panqin;CHEN Lidong;SHEN Chen(School of Physics and Electronic Engineering,Northeast Petroleum University,Daqing,Heilongjiang 163318,China;International Business Department,China International Engineering Consulting Corporation Limited,Beijing 100048,China;Daqing Branch,China National Logging Corporation,Daqing,Heilongjiang 163000,China)

机构地区：[1]东北石油大学物理与电子工程学院,黑龙江大庆163318 [2]中国国际工程咨询有限公司国际业务部,北京100048 [3]中国石油集团测井有限公司大庆分公司,黑龙江大庆163000

出　　处：《测井技术》2025年第1期97-103,共7页Well Logging Technology

基　　金：国家自然科学基金项目“网络模型的智能分层注水井压力脉冲数据传输方法”(52174021)。

摘　　要：在分层注水施工作业中,水嘴口径的正确选择对于分层流量调节的准确性起着关键作用。然而,目前投捞式注水水嘴口径的选择主要依赖人工经验,导致施工效率低下,调配周期较长。搭建实验装置采集水嘴两端的流量和压差数据,通过线性拟合实验数据得到从小直径到大直径水嘴口径范围的压差、流量关系图版,并基于流体力学水嘴节流能量方程建立不同口径水嘴节流的局部阻力系数与水嘴面积之间关系公式,依据该公式,可以准确计算出给定流量和压差条件下的水嘴口径,将现场实验数据与公式验证数据和文献实验数据与公式验证数据分别进行对比,误差均不超过5%。建立不同口径水嘴的三维模型,使用FLUENT软件进行数值模拟计算出不同流量下不同口径水嘴的压差数据,通过数值模拟得到的流量—压差数据与实验数据进行比对,实验结果与仿真结果误差不超过12%,数值模拟误差满足工程精度要求范围,进一步验证水嘴局部阻力系数与水嘴面积之间关系公式的可靠性。借助水嘴图版和关系公式,有助于在现场实际应用中水嘴的准确选择,对提高油田分层注水流量调配效率和调配精度有指导意义。The correct selection of water nozzle diameter plays a crucial role in the accuracy of layered flow regulation during water injection construction operations.However,the selection of the diameter of the fishing type water injection nozzle mainly relies on manual experience,which leads to low construction efficiency and a long deployment cycles.Set up an experimental device to collect flow rate and pressure difference data at both ends of the water nozzle,and obtain a pressure difference and flow rate relationship chart from small diameter to large diameter water nozzle diameter range through linear fitting of experimental data.Based on the energy equation of fluid mechanics water nozzle throttling,establish a formula for the relationship between local resistance coefficient and water nozzle area for different diameter water nozzle throttling.According to this formula,the water nozzle diameter under given flow rate and pressure difference conditions can be accurately calculated.Compare the on-site experimental data with the formula validation data and the literature experimental data with the formula validation data,and the error is no more than 5%.Establish three-dimensional models of water nozzles with different diameters,use FLUENT software for numerical simulation to calculate the pressure difference data of water nozzles with different diameters at diferent flow rates.Compare the flow pressure difference data obtained from numerical simulation with experimental data,the simulation results is no more than 12%between the experimental and simulation results.The numerical simulation error is within the range of the engineering accuracy requirements,and further verifing the reliability of the formula for the relationship between the local resistance coefficient of the water nozzle and the water nozzle area.The use of nozzle diagrams and relationship formulas is beneficial for accurate selection of nozzles in practical field applications,and has important value in improving the efficiency and accuracy of layered wa

关 键 词：分层注水 水嘴压力损失 局部阻力系数 嘴损曲线 数值模拟 

分 类 号：P631.84[天文地球—地质矿产勘探]