Carbon capture and storage (CCS) is a promising technology for reducing greenhouse gas emissions, however, leakage of CO constitutes a major concern for aquifers. Despite abundant literature on petrophysical and geochemical changes at storage conditions, few studies address the impact of CO leakage on petrophysical and at aquifer-like pressures, flow rates and temperatures. The aim of the paper is to study and quantify at the core scale, the effects of various factors, including flow rates, fluid salinities, CO concentrations and limestone carbonate facies, on the petrophysical and geochemical parameters of a carbonate freshwater aquifer during an experimental CO leakage. To achieve this, successive CO-rich water percolation experiments were performed at the core scale, while monitoring changes in petrophysical parameters and water chemistry.

中文翻译：

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含水层二氧化碳泄漏项目。富含二氧化碳的水渗滤在多孔石灰岩岩心中的影响：模拟浅层碳酸盐淡水含水层的渗漏

碳捕获与封存（CCS）是一种很有前途的减少温室气体排放的技术，然而，二氧化碳的泄漏是含水层的主要问题。尽管有大量关于储存条件下石油物理和地球化学变化的文献，但很少有研究探讨二氧化碳泄漏对石油物理和类含水层压力、流速和温度的影响。本文的目的是在核心尺度上研究和量化各种因素的影响，包括流速、流体盐度、CO 浓度和石灰岩碳酸盐岩相，在实验 CO 过程中对碳酸盐淡水含水层的岩石物理和地球化学参数的影响泄漏。为了实现这一目标，在岩心规模上进行了连续的富二氧化碳水渗滤实验，同时监测岩石物理参数和水化学的变化。