A New Approach for Storage Capacity and Allowable Injection Time Calculation in Carbon Capture and Storage (CCS) Reservoir
为了减少大气中的二氧化碳排放，一些能源行业开始实施碳捕集和封存（CCS）。然而，在计算CCS储层的储存容量和允许注入时间时仍然存在考虑不足的情况，可能导致出现泄漏问题。为此，本文研究了高精度计算新方法。
本研究使用CMG软件模拟了East Natuna油田的基础模型。然后，在CMG-CMOST和Eureqa软件的支持下，使用该模型对10个CCS油田进行了敏感性分析。得出的结果方程中，存储容量的R-Square为96.6%，允许注入时间的R-Square为95.4%。新方程中考虑了渗透率、孔隙度、裂缝压力、厚度、面积、储层温度和储层压力等参数。为了验证新方程，对3个CCS储层进行了案例研究。结果表明，新方程得出储存容量减少了21%，允许注入时间减少了7年。由于附加限制，结果是合理的。因此，与传统方程相比，所生成的新方程有效并且更加适用。
印度尼西亚万隆理工学院
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.
The generated equation is shown below for both Storage Capacity and Allowable Injection Time
