流体机械2023，Vol.51Issue(11)：1-8,8.DOI:10.3969/j.issn.1005-0329.2023.11.001
水力喷射径向水平井回灌增注特性可视化试验研究
Visual experimental study on the recharge enhancement characteristics of radial jet drilling technology
摘要
Abstract
In response to the frequent occurrence of severe formation blockage during the process of sandstone thermal storage recovery and reinjection,which reduces the reinjection rate,a visualization experimental device for simulating sandstone reinjection was designed,and radial horizontal well visualization reinjection experiments were carried out to study the particle transport law near the wellbore and the characteristics of radial horizontal well injection enhancement.The results show that in the case of only the central well,the blockage area of the tracer particles is mainly circular.With the increase of injection flow rate(900～2 100 mL/min),the migration radius and blockage area of the tracer particles show an increasing trend;When the flow rate further increases(2 100～3 000 mL/min),the blockage shape changes into a circular ring shape;Under the presence of radial wells,the blockage shape of tracer particles is a conical blockage distributed along the radial well branches,and the degree of blockage decreases from the root to the toe of the radial well;As the number of radial well branches increases,the blockage area of single branch wells shows a decreasing trend,with a slender conical shape.The total blockage area shows an increasing trend,but the relative blockage degree decreases,proving that radial well technology is beneficial for reducing reservoir blockage.The research results are expected to provide effective theoretical support for the application of radial horizontal well technology in the process of sandstone thermal storage and reinjection.关键词
径向水平井/砂岩/地热/回灌/可视化Key words
radial jet drilling technology/sandstone/geothermal resources/recharge/visualization分类
机械制造引用本文复制引用
李敬彬,程康,胡静茹,黄中伟,王海柱..水力喷射径向水平井回灌增注特性可视化试验研究[J].流体机械,2023,51(11):1-8,8.基金项目
国家重大科研仪器研制项目(51827804) （51827804）
