Determination of hysteresis in relative permeability data is useful in obtaining more reliable predictions of water alternating gas (WAG) enhanced oil recovery performance and accompanying associated storage of CO₂. A laboratory-based evaluation of CO₂ draining oil has been conducted on reservoir rocks from a conventional clastic oil reservoir undergoing tertiary CO₂ enhanced recovery. Experimentation was conducted at reservoir conditions of 16 MPa (2300 psi) and 43 °C (110 °F). Through this study, a better understanding of the oil production and associated storage of CO₂ in a conventional clastic oil reservoir has been obtained. Data generated provide an example of a site-specific field project that is currently undergoing a tertiary CO₂-based EOR project demonstrating that associated CO₂ storage will occur. Through multiple cycles of CO₂ injection, this study has shown the effectiveness of first contact CO₂ as it relates to the mobilization of oil from injector to producer. Additionally, in this conventional clastic reservoir, CO₂ trapping appears to have taken place during the initial imbibition cycle, as oil production and differential pressures remain consistent during subsequent tests.

确定相对渗透率数据中的磁滞有助于获得更可靠的水交替气（WAG）增强的采油性能以及伴随的CO ₂储存预测。已对来自常规碎屑油藏的三次三次CO ₂强化采收的储层岩石进行了基于实验室的CO ₂排油评估。实验是在16 MPa（2300 psi）和43°C（110°F）的储层条件下进行的。通过这项研究，可以更好地了解石油生产和相关的CO ₂储存已经获得了常规碎屑油藏中的油藏。生成的数据提供了一个特定于现场的项目的示例，该项目目前正在接受基于CO ₂的三次EOR项目，表明将发生相关的CO ₂储存。通过多次注入CO _2的过程，这项研究表明了首次接触CO ₂的有效性，因为它与将油从注入器转移到生产商有关。另外，在该常规碎屑油藏中，CO _2的捕集似乎是在初始吸收周期中发生的，因为在随后的测试中产油量和压差保持一致。