With rising carbon dioxide emissions and ambitious global targets for climate change mitigation, carbon sequestration has become one of the most promising carbon dioxide removal technologies. It can prove especially beneficial to an emerging country such as India, which must balance its rapid economic growth with a reduction in emissions. A detailed assessment of the cumulative storage capacity is necessary to facilitate the development of CO₂ storage pathways in India. Previous assessments for India have primarily estimated the theoretical storage capacity based on limited data. In this study, we have reviewed different methodologies for estimating storage capacities globally, and based on the most current data available, in a first, developed a systematic assessment for theoretical and effective CO₂ storage capacities for different geological formations in India. Four storage pathways with adequate potential have been identified: storage through CO₂ enhanced oil recovery (EOR), enhanced coalbed methane recovery (ECBMR), storage in deep saline aquifers, and basalt formations. The results indicate considerable potential for CO₂ storage in India, especially in saline aquifers (291 Gt) and basalt (97–316 Gt). Even though the storage capacity estimated through EOR (3.4 Gt) and ECBMR (3.7 Gt) is comparatively less, it is adequate to store emissions from nearby large point sources. These methods are also highly feasible due to the ready availability of infrastructure and extensive geological information about the basins involved. In addition, we have developed novel classification systems for different basins in India to represent their prospectivity for CO₂ storage.

随着二氧化碳排放量的增加和减缓气候变化的雄心勃勃的全球目标，碳封存已成为最有前途的二氧化碳去除技术之一。事实证明，它对印度这样的新兴国家尤其有益，因为印度必须在快速经济增长与减排之间取得平衡。有必要对累积存储容量进行详细评估，以促进印度CO ₂存储路径的开发。之前对印度的评估主要是根据有限的数据估算了理论存储容量。在这项研究中，我们回顾了估算全球存储容量的不同方法，并根据最新可用数据，首先开发了对理论和有效 CO 的系统评估₂印度不同地质构造的存储容量。已经确定了四种具有足够潜力的封存途径：通过 CO ₂提高石油采收率 (EOR) 封存、提高煤层气采收率 (ECBMR) 封存、深部咸水层封存和玄武岩地层封存。结果表明 CO _{2 的}巨大潜力储存在印度，尤其是在咸水层（291 Gt）和玄武岩（97-316 Gt）中。尽管通过 EOR (3.4 Gt) 和 ECBMR (3.7 Gt) 估算的存储容量相对较小，但足以存储附近大型点源的排放。由于基础设施的现成可用以及有关盆地的广泛地质信息，这些方法也非常可行。此外，我们为印度的不同盆地开发了新的分类系统，以代表其 CO ₂封存的前景。