Development of Geomechanical Screening Tools to Identify Risk

DOE "DEVELOPMENT OF GEOMECHANICAL SCREENING TOOLS TO IDENTIFY RISK:  AN EXPERIMENTAL AND MODELING APPROACH FOR SECURE CO2 STORAGE"

PI: Nicolas Espinoza

CO2 geological storage can help mitigate the emission of greenhouse gases to the atmosphere. Meaningful CO2 geological storage would involve massive amounts of CO2 to be injected underground. However, the injection of CO2 can change the state of stress in the reservoir rock and the caprock.

Changes in stresses can lead to mechanical failure of the geological formation at various length scales. The objective of this project is to characterize in the laboratory the thermo-poro-mechanical properties of reservoir rocks and use relevant measured properties in a state-of-the-art geomechanically coupled fluid flow simulator. Fully understanding these stress changes can help recognize risks involved in CO2 geological storage and prevent them.
 

photo credit: Sue Hovorka, BEG UT
Photo credit: S. Hovorka, BEG, UT