Parametric Study to Assess Technical Prospect Feasibility for Offshore CO2 Storage
本报告是一份关于参数研究的白皮书，旨在评估有非二氧化碳提高采收率的二氧化碳储存技术前景的可行性。SECARB海上GOM团队过去模拟经验表明对CO2羽流大小和CO2-EOR性能影响最大的关键参数（SSEB，2019）。这些参数包括构造影响（储层倾角和断层大小）、储层物性（渗透率）和开发策略（布井方案、注水和CO2驱油方式）。本研究对这些参数进行了进一步评估，以确定参数值的上限和下限条件。
在进行模拟评估时，需要边界条件来设置关键参数的约束。了解GOM的关键参数值将有助于确定成功的海上碳捕获利用和储存（CCUS）项目的羽流大小、储存的二氧化碳，以及在EOR的情况下的石油开采。重要的是，本白皮书同时关注技术因素（地质和工程），但没有考虑经济、商业或利益相关者的因素。该报告分为四个部分，包括对用于定义参数范围的数据集的审查、全机理储层模拟的结果、评估研究参数影响的降阶模拟方法的总结，以及对项目下一阶段将进行的工作的讨论。
Abstract
This report is a white paper on the parametric study to assess technical prospect feasibility for CO2 storage with and without CO2-EOR. The SECARB Offshore GOM team reviewed key parameters that previous modeling experience suggests have the largest impact on CO2 plume size and CO2-EOR performance (SSEB, 2019) These parameters include tectonic impacts (reservoir dip and fault block size), reservoir properties (permeability) and development strategies (well field payout, waterflood, and CO2 flooding strategies). These parameters are further evaluated in this study in order to identify upper and lower boundary conditions for the parametric values.
The boundary conditions are needed to set constraints for key parameters when performing modeling assessments. Understanding the key parametric values for the GOM will facilitate locating successful offshore carbon capture utilization and storage (CCUS) projects in terms of plume size, CO2 stored and, in the case of EOR, oil recovery. Importantly, this white paper focuses on both technical factors (geologic and engineering), but does not address economic, commercial, or stakeholder considerations. The report is organized into four sections and includes a review of the datasets used to define the parameter ranges, the results of a full-physics reservoir simulation, a summary of a reduced order modeling approach to evaluate the impact of the study parameters, and, finally, a discussion of the work that will occur during the next phase of the project.
