The Paris Agreement established global ambitious targets for reducing carbon dioxide (CO₂) emissions, requiring the rapid and extensive development of low carbon technologies, and one of the most efficient is CO₂ geological storage. Among the deep geological formations used for CO₂ storage, the shale layers have been a new emerging field with higher efficiency because they are abundant and have a high content of organic matter that is favorable for CO₂ retention. However, one of the challenges in evaluating a location for potentials reservoirs is the adequate geological characterization and storage volume estimation. The study evaluates the Irati Formation of the Paraná Basin based on wireline logs information within Southeastern Brazil, where most stationary sources of carbon emissions are located. Three-dimensional (3D) implicit modeling techniques were applied not only for volume calculation purpose, but also in the site selection stage, generating thematic 3D models indicating thickness, depth, structures, and distance to aquifer systems. The limestones, shales, and black shales of the Irati Formation were locally grouped into six units considering the geological composition and spatial continuity. Based on the 3D model and reservoir parameters, the organic-rich shale Unit E with a theoretical capacity of 1.85 Gt is considerable for CO₂ storage. The estimated CO₂ storage capacity is promising because it is higher than the total CO₂ locally produced, and it could support the implantation of new projects in this region. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd.

中文翻译：

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3D 隐式建模应用于评估巴西东南部巴拉那盆地 Irati 组页岩中的 CO2 地质储存

《巴黎协定》确立了减少二氧化碳 (CO ₂ ) 排放的全球雄心勃勃的目标，需要快速广泛地发展低碳技术，其中最有效的方法之一是 CO ₂地质封存。在用于封存CO ₂的深层地质构造中，页岩层由于储量丰富且有机质含量高，有利于CO _{2 的}存在，成为了一个效率更高的新兴领域。保留。然而，评估潜在储层位置的挑战之一是充分的地质特征和储存量估计。该研究根据巴西东南部的电缆测井信息评估了巴拉那盆地的 Irati 地层，巴西东南部的大多数固定碳排放源都位于该地区。三维 (3D) 隐式建模技术不仅用于体积计算目的，还用于选址阶段，生成指示厚度、深度、结构和到含水层系统距离的专题 3D 模型。考虑到地质组成和空间连续性，Irati 组的石灰岩、页岩和黑色页岩被局部分为六个单元。基于 3D 模型和储层参数，₂存储。估计的 CO ₂存储容量很有希望，因为它高于本地生产的CO ₂总量，并且可以支持该地区新项目的植入。© 2021 化学工业协会和 John Wiley & Sons, Ltd.