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Receptors Wellbores and Seals Reservoirs Induced Seismicity NRAP Tools
The National Risk Assessment Partnership (NRAP) has developed a set of simulation tools that we are making available for Phase I testing by the CCS research and industrial communities. These tools are in draft form and the project team is seeking input from interested testers; they are not suitable for commercial deployment at this point. The tools, described briefly below, are useful to help evaluate several parts of the carbon storage subsurface containment system (e.g., reservoirs, seals, wells, and aquifers), as they relate to two major types of environmental risks: leakage and induced seismicity.

Learn more about NRAP Phase I tools testing and the Phase I tools webinars here.

The following is a list of the tools and a general description of their function:

NRAP Integrated Assessment Model-Carbon Storage (NRAP-IAM-CS)

- Simulates long-term, full-system behavior (reservoir to aquifer/atmosphere)
Results can be used to:
- Compute risk profiles (time-dependent probability of leakage and GW impact)
- Quantitatively estimate storage permanence amidst system uncertainty
- Identify key drivers of risk in context of uncertainty

Reservoir Evaluation & Visualization (REV) tool

- Generates pressure and CO2 plumes size relationships over time
- Facilitates determination of Area of Review (AoR)
- Visualizes reservoir behavior probabilistically

Wellbore Leakage Analysis Tool (WLAT)

- Evaluates existing wells for leakage potential
- Explores leakage response as a function of well disposition
- Evaluates the implications of permeable overburden zones

NRAP Seal barrier Reduced-order model (NSealR)

- Estimates flux through a fractured or perforated seal
- Accounts for storage outside of primary target zone

Aquifer Impact Model (AIM)

- Rapidly estimates volume of aquifer impacted by a leak
- Distinguishes between CO2 and brine leaks
- Used to determine impact of threshold criteria

Designs for Risk Evaluation and Management (DREAM)

- Estimates time to detection for a monitoring system
- Evaluates and select optimal monitoring designs

Short Term Seismic Forecasting (STSF) tool

- Forecasts seismic event frequency over the short term
- Potential to complement stoplight approach for induced seismicity planning and permitting

Reservoir Reduced-Order Model - Generator (RROM-Gen)

- Converts reservoir simulation results for input to NRAP-IAM-CS

Ground Motion Prediction applications to potential Induced Seismicity (GMPIS) tool

- Ground motion prediction from potential induced earthquakes based on global dataset
- Tectonic scenario earthquakes could provide a valuable planning tool due to potential of injection to stimulate the rate of natural seismicity

Multiple Source Leakage Reduced-order model (MSLR)

- MSLR handles single- or multiple-source CO2 leakage using a reduced-order model (ROM)
- Determines the probability that the monitors are located within the extent of plume above a critical concentration

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