水文地质工程地质2024，Vol.51Issue(3)：34-42,9.DOI:10.16030/j.cnki.issn.1000-3665.202305049
基于地下水化学特征的水封油库水幕系统有效性评价
Evaluation of water curtain system effectiveness for underground crude oil storage caverns based on hydrogeochemical characteristics
摘要
Abstract
Water curtain system effectiveness is important for the safe and stable operation of underground crude oil storage caverns;however,current methods on evaluating the water curtain systems effectiveness are not efficient and convenient.Based on the first large water sealing petroleum storage caverns in China,this study analyzed the hydrogeochemical feature and the mineral composition characteristic of rock mass by water quality tests,SEM analysis,and statistical analysis.The groundwater curtaining system effectiveness were then assessed based on the hydraulic connection analysis.The results show that groundwater is dominated by HCO3-Na·Ca type water in the early stage of oil storage running.With the interaction between groundwater and mineral components in rock,such as potassium feldspar,albite,and anorthite,the concentration of K+,Na+,Ca2+,Mg2+,and HCO3-increases,and pH decreases.The concentration of Cl-maintained in the allowable range,indicating no groundwater corrosion on the support system.The similarity of hydrogeochemical characteristics between water in the water curtaining system and background groundwater shows that water from the system has a hydraulic connection with the background groundwater,forming a good containment for the storage.This study provides an important basis for safe and effective operation of oil storage and a scientific method for judging the water curtain system effectiveness.关键词
地下水封油库/水幕系统有效性/地下水水化学特征/水-岩相互作用/聚类分析/主成分分析Key words
underground crude oil storage caverns/water curtain system effectiveness/hydrogeochemical characteristics/water-rock interaction/cluster analysis/principal component analysis分类
建筑与水利引用本文复制引用
彭振华,乔丽苹,黄安达,王者超,李成..基于地下水化学特征的水封油库水幕系统有效性评价[J].水文地质工程地质,2024,51(3):34-42,9.基金项目
国家自然科学基金面上项目(42177157) （42177157）
辽宁省应用基础研究计划项目(2022020363-JH2/1013) （2022020363-JH2/1013）
