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瓦巴门地区CO2封存工程地质力学建模与分析Geomechanical Modelling  and Analysis      Wabamun Area CO2  Sequestration Proj 瓦巴门地区CO2封存工程地质力学建模与分析Geomechanical Modelling  and Analysis      Wabamun Area CO2  Sequestration Proj

瓦巴门地区CO2封存工程地质力学建模与分析Geomechanical Modelling and Analysis Wabamun Area CO2 Sequestration Proj

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  • 更新时间:2021-09-20
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有证据表明,根据目前的封存试验项目和加强的石油开采工作, 地质隔离是技术上可行的显著减少人为因素的手段 二氧化碳的排放。关于二氧化碳的长期储存,最重要的关注之一是 注水引起的应力变化可能导致裂缝的形成或复活 可能为CO2迁移提供途径的网络和断层运动 通过先前不渗透的岩石(Quintessa等人,2007)。一部分注入的CO2罐 如果密封岩石的完整性被地质力学机制破坏,则逃离存储区域 如断层再活化、诱发裂缝的扩展或岩石剪切破坏。为了 确定应力状态是否损害地层有效作用的能力 储存单元,必须进行地层完整性的地质力学评价,通过 耦合流动和地质力学建模的方法。近几十年来,这一现象十分显著。 努力开发模拟技术来对上述机制建模 石油工业应用。本研究的目的是进一步发展此模拟。 用于建模和理解 在注入CO2期间或之后发生的地质力学效应。

Based on current sequestration pilot projects and enhanced oil recovery efforts, evidence suggests that geologic sequestration is a technically viable means to significantly reduce anthropogenic emissions of CO2. One of the most important concerns with respect to the long term CO2 storage is that stress changes caused by injection could lead to the formation or reactivation of fracture networks and fault movements which could potentially provide pathways for CO2 migration through previously impermeable rocks (Quintessa et al., 2007). A portion of injected CO2 can escape the storage domain if the integrity of the seal rock is violated by geomechanical mechanisms such as fault reactivation, propagation of induced fractures or rock shear failure. In order to determine whether the stress state compromises the ability of the formation to act as an effective storage unit, a geomechanical assessment of the formation integrity must be carried out, by the means of coupled flow and geomechanical modelling. In recent decades there has been significant effort towards developing simulation techniques to model the aforementioned mechanisms for petroleum industry applications. The goal of this study is to further develop this simulation technology and modelling tools to model and understand the mechanisms and physics of the geomechanical effects occurring during or after CO2 injection.

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