Abstract
As a win–win technology, CO2 storage in coal beds could increase the CH4 recovery as well as CO2 storage in coal beds. The evaluation of CO2 storage capacity in coal beds is very important to guide CO2 storage technology. The present CO2 storage evaluation methods for coal beds only considered the adsorption trapping. But most coal beds have water. At least in China, 80% of coal beds have water. So the CO2 displacement trapping and dissolution trapping in reservoir water should be not ignored. In this study, aiming at the characteristics of China's coal beds, CO2 dissolution in water, CO2 displacement to formation water, CO2 adsorption in coal beds are considered and new CO2 storage evaluation methods for coal beds are proposed. And three calculation methods are introduced to determine the key parameters in these new evaluation methods. These methods can improve the reliability to calculate the CO2 storage capacity in coal beds. At last an example is discussed and the procession of evaluation is demonstrated. The evaluation results of the Qinshui basin prove the reliability of new evaluation methods, and indicate that the CO2 storage capacity in coal beds have a relatively large prospects.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
