Advances in Carbon Dioxide Storage Projects: Assessment and Perspectives

摘要

Carbon capture and storage (CCS) is a climate change mitigation method in which anthropogenic carbon dioxide (CO_2) is captured from large point sources and stored in geological formations, in the ocean, or through mineral carbonation. CO_2 can be injected and stored for a variety of reasons, including permanent disposal or enhanced oil recovery in certain oil fields. The main objective of this paper is to assess the advances made in CO_2 storage projects globally. This study reviews the major companies/ businesses that are involved in CCS deployment. The study also presents the alternative for the sequestration of CO_2 into the geological formations through existing major projects. It explains their progress, structural and faulting configuration, CO_2 transportation and injection, potential CO_2 source(s), estimation of the storage capacity, etc. This study also highlights the monitoring programs that are used in different operating projects and the status of active projects. The study suggests that CCS faces further deployment challenges due to the heterogeneity and complexity of rock formations, high cost of deployment, possibility of formation damage during injection and potential for migration and leakage of CO_2. Additionally, inappropriate strategy for CO_2 injection may lead to wellbore integrity problems, formation of hydrates, and inadequate pressure control. More research-particularly, geological evaluation before injection and storage-is apparently needed.