資料簡介
有證據(jù)表明，根據(jù)目前的封存試驗(yàn)項(xiàng)目和加強(qiáng)的石油開采工作， 地質(zhì)隔離是技術(shù)上可行的顯著減少人為因素的手段 二氧化碳的排放。關(guān)于二氧化碳的長期儲存，最重要的關(guān)注之一是 注水引起的應(yīng)力變化可能導(dǎo)致裂縫的形成或復(fù)活 可能為CO2遷移提供途徑的網(wǎng)絡(luò)和斷層運(yùn)動 通過先前不滲透的巖石(Quintessa等人，2007)。一部分注入的CO2罐 如果密封巖石的完整性被地質(zhì)力學(xué)機(jī)制破壞，則逃離存儲區(qū)域 如斷層再活化、誘發(fā)裂縫的擴(kuò)展或巖石剪切破壞。為了 確定應(yīng)力狀態(tài)是否損害地層有效作用的能力 儲存單元，必須進(jìn)行地層完整性的地質(zhì)力學(xué)評價，通過 耦合流動和地質(zhì)力學(xué)建模的方法。近幾十年來，這一現(xiàn)象十分顯著。 努力開發(fā)模擬技術(shù)來對上述機(jī)制建模 石油工業(yè)應(yīng)用。本研究的目的是進(jìn)一步發(fā)展此模擬。 用于建模和理解 在注入CO2期間或之后發(fā)生的地質(zhì)力學(xué)效應(yīng)。
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.
資料截圖
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