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Title: Uncertainty Quantification for the Reliability of the Analytical Analysis for the Simplified Model of CO2 Geological Sequestration

A hydro-mechanical model with analytical solutions including pressure evolution and geomechanical deformation for geological CO2 injection and sequestration were introduced in our previous work. However, the reliability and accuracy of the hydro-mechanical model and the companion analytical solution are uncertain because of the assumptions and simplifications in the analytical model, though it was validated by a few example cases. This study introduce the method to efficiently measure the accuracy of the analytical model, and specify the acceptable input parameters range that can guarantee the accuracy and reliability of the analytical solution. A coupled hydro-geomechanical subsurface transport simulator STOMP was adopted as a reference to justify the reliability of the hydro-mechanical model and the analytical solution. A quasi-Monte Carlo sampling method was applied to efficiently sample the input parameter space.
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Publication Date:
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Resource Type:
Journal Article
Resource Relation:
Journal Name: Greenhouse Gases: science and technology, 5(1002):141-151
Research Org:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
Sponsoring Org:
Country of Publication:
United States
CO2 sequestration; uncertainty quantification; analytical analysis; numerical simulation; STOMP