A New Approach for Storage Capacity and Allowable Injection Time Calculation in Carbon Capture and Storage (CCS) Reservoir
为了减少大气中二氧化碳排放，一些能源行业已开始采用碳捕集存储（CCS）技术。然而，在计算储存容量和允许注入时间时，仍然存在一些限制和考虑因素较少的问题，这可能导致泄漏问题的发生。为了解决这个问题，我们进行了一项研究，旨在提高计算精度。
在这项研究中，我们使用CMG软件和东纳图纳气田基础模型来建立储层模型。然后，我们利用CMG-CMOST和Eureqa软件对10个CCS场地进行了敏感性分析。通过这些分析，我们得出了一个方程，可以用于计算储存容量和允许注入时间。根据结果，储存容量方程的R平方为96.6%，允许注入时间方程的R平方为95.4%。这表明我们的方程在预测储存容量和允许注入时间方面具有高度准确性。
方程考虑了多个参数，包括渗透率、孔隙度、裂缝压力、厚度、面积、储层温度和储层压力。为了验证方程，我们进行了3个CCS矿场案例研究。结果显示，根据我们的方程，储存容量减少了21%，允许注入时间减少了7年。这个结果是合理的，因为我们引入了额外的限制。因此，我们相信我们的方程是有效的，与传统方程相比更有益。
Abstract.
In reducing the CO2 emissions in the atmosphere, some energy industry start to implement the Carbon Capture Storage (CCS). However, there still less restriction and considerations in calculating the storage capacity and allowable injection time of CCS reservoir which might lead into leakage problem. In overcoming this problem, there is a study conducted to make a new calculation with higher accuracy. In this study, the reservoir model is using CMG software with base model of East Natuna Field. Then, this model is used to make a sensitivity analysis for 10 CCS fields with a support of CMG-CMOST and Eureqa software. The result is an equation with an R-Square of 96.6% for storage capacity and 95.4% for allowable injection time. The considered parameter in the new equation are permeability, porosity, fracture pressure, thickness, area, reservoir temperature, and reservoir pressure. To validate the new equation, a case study is made for 3 CCS fields. The result shows that the new equation shows up to 21% smaller storage capacity and 7 years reduction in allowable injection time. The result is reasonable due to additional restrictions. Therefore, it is believed that the generated equation is valid and more beneficial compared to the conventional equation.
