Optimizing the development plan for oil production and CO2 storage in target oil reservoir
Carbon dioxide enhanced oil recovery (CO2-EOR) technology is used for oil production and CO2 storage in reservoirs. Methods are being constantly developed to optimize oil recovery and CO2 storage during the CO2 displacement process, especially for low-permeability reservoirs under varying geological...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2025-06-01
|
| Series: | Energy Geoscience |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666759225000265 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | Carbon dioxide enhanced oil recovery (CO2-EOR) technology is used for oil production and CO2 storage in reservoirs. Methods are being constantly developed to optimize oil recovery and CO2 storage during the CO2 displacement process, especially for low-permeability reservoirs under varying geological conditions. In this study, long-core experiments and trans-scale numerical simulations are employed to examine the characteristics of oil production and CO2 storage. Optimal production parameters for the target reservoir are also proposed. The results indicate that maintaining the pressure at 1.04 to 1.10 times the minimum miscible pressure (MMP) and increasing the injection rate can enhance oil production in the early stage of reservoir development. In contrast, reducing the injection rate at the later stages prevents CO2 channeling, thus improving oil recovery and CO2 storage efficiency. A solution-doubling factor is introduced to modify the calculation method for CO2 storage, increasing its accuracy to approximately 90 %. Before CO2 breakthrough, prioritizing oil production is recommended to maximize the economic benefits of this process. In the middle stage of CO2 displacement, decreasing the injection rate optimizes the coordination between oil displacement and CO2 storage. Further, in the late stage, reduced pressure and injection rates are required as the focus shifts to CO2 storage. |
|---|---|
| ISSN: | 2666-7592 |