CCS and Power Systems
Carbon Storage - Geologic Storage Technologies and Simulation and Risk Assessment
Nature and Dynamics of the Reservoir/Caprock Contact and Implications for Carbon Storage Performance
Performer: New Mexico Institute of Mining and Technology
Project No: FE0004844
Figure 1. Examples of the types of formation/confining zone interfaces.
Figure 2. NMIMT is using numerical mechanical models to examine the nature of rock fracture and its interplay with the mechanical nature of a variety of sedimentological contacts. The general conditions for the model domain are: E = Young’s Modulus, G = Fracture modulus, where E1>E2>E3, and G1<G2<G3 - strong, stiff rocks are actually easier to fracture. NMIMT will examine a range of conditions loaded by far-field stresses, and local stresses at crack tips, including: (A) bonded simple contact, (B) narrow cohesionless contact, (C) contact zone of thickness t, (D) fluid pressurized system [this can be applied to all contact geometries with pore pressure Pf], (E) irregular narrow contact, and (F) irregular contact zone. The white area indicates a crack and the dark blue area indicates a crack with pressurized fluid.