We present a model framework for dynamic simulation of the flow of ${\text{CO}}_{\mathrm{2}}$ and other components in an injection well coupled with a near‐well reservoir. With a partitioned approach, we employ numerical methods adapted to the governing equations in each domain. In both well and reservoir, accurate thermodynamics are used. This model can be used for various design and operational considerations for ${\text{CO}}_{\mathrm{2}}$‐injection wells, that is, the quantification of pressure and temperature transients, and phase composition, including the appearance of a water‐rich phase. We study cases where the flow in the well and the near‐well reservoir is dynamically coupled. The rock properties are seen to strongly affect the well dynamics, both regarding magnitude and transient evolution of the bottom‐hole pressure. We consider a variation of this case where water is co‐injected with ${\text{CO}}_{\mathrm{2}}$, showing that this is a potential method to mitigate salt precipitation. We also consider intermittent injection, representing the case of direct injection from ships transporting ${\text{CO}}_{\mathrm{2}}$. Finally, we observe that in the present cases, a coupled model (as opposed to a well‐only model) is necessary in order to capture the dynamics in the well during injection. © 2020 Society of Chemical Industry and John Wiley & Sons, Ltd.

中文翻译：

---

使用分区方法进行的CO2井-储层耦合模拟：储层性质对井动力学的影响

我们提出了一个模型框架，用于动态模拟流动 ${\text{一氧化碳}}_{\mathrm{2}}$注入井中的其他组分以及近井储层。通过分区方法，我们采用了适用于每个域中控制方程的数值方法。在井和储层中，均使用精确的热力学。该模型可用于以下方面的各种设计和操作考虑：${\text{一氧化碳}}_{\mathrm{2}}$注入井，即压力和温度瞬变的定量以及相组成，包括富水相的出现。我们研究了井与近井储层中的流动是动态耦合的情况。在井底压力的大小和瞬态演化方面，岩石性质被认为会严重影响井的动力学。我们考虑将水与${\text{一氧化碳}}_{\mathrm{2}}$，表明这是减轻盐分沉淀的一种潜在方法。我们还考虑间歇注入，这代表了运输船舶直接注入的情况${\text{一氧化碳}}_{\mathrm{2}}$。最后，我们观察到在当前情况下，为了在注入过程中捕获井中的动态，必须使用耦合模型（与仅使用井的模型相对）。©2020年化学工业协会和John Wiley＆Sons，Ltd.