分层注水井定压注水流量变化规律研究  

Change Law of Water Injection Flow at Constant Pressure in Stratified Water Injection Wells

作　　者：刘兴斌[1] 李忠伟 刘昭 LIU Xingbin;LI Zhongwei;LIU Zhao(College of Physics and Electronic Engineering,Northeast Petroleum University,Daqing,Heilongjiang 163318,China;Daqing Oilfield No.1 Oil Production Company,Daqing,Heilongjiang 163411,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]大庆油田有限责任公司采油一厂,黑龙江大庆163411

出　　处：《石油管材与仪器》2023年第6期82-85,共4页Petroleum Tubular Goods & Instruments

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

摘　　要：为了实现高含水油田开发中的精细注水,以高效挖潜储层剩余油,研究了定压注水条件下流量的稳定规律。在无限大地层的不稳定渗流条件下,基于弱可压缩液体不稳定渗流的连续性方程,以定压注水方式为基础设置边界条件并结合分离变量法对方程进行求解。建立分层注入流量变化规律模型对流量进行预测,能够提前预知流量变化趋势并做出修正,实现注水井的精细稳定注水。同时研究了地层压力、地层渗透率、流动系数等因素对流量稳定规律的影响,其结果可指导现场分层流量调配。In order to achieve fine water injection in the development of high water cut oil fields and efficiently tap the remaining oil in reservoirs,the stable flow rate under constant pressure water injection conditions was studied.Under the unstable seepage conditions of infinite formations and based on the continuity equation of weakly compressible liquid unstable seepage,boundary conditions are set based on constant pressure water injection method and the equation is solved using the separation of variables method.A layered injection flow rate variation model is established to predict the flow rate,which can predict the flow rate variation trend in advance and make corrections,achieving precise and stable water injection in water injection wells.At the same time,the influence of factors such as formation pressure,formation permeability,and flow coefficient on the stability of flow rate is studied,and the results can guide the on-site stratified flow allocation.

关 键 词：不稳定渗流 分层注水 精细注水 定压注水 流量预测 

分 类 号：P631.81[天文地球—地质矿产勘探]