CO2 Storage Analysis Module
Purpose
This module allows users to evaluate the CO2 storage potential of a reservoir as well as the pressure available CO2 storage available.
Primary Outputs
| Curve Name | Description |
|---|---|
| CO2_DENSITY | Density of CO2 at reservoir PVT |
| CCS_STORAGE_CAPACITY | Cumulative summation of CO2 Storage Capacity |
| CCS_PRESSURE_AVAILABLE_STORAGE_CAPACITY | Pressure available cumulative summation of CO2 Storage Capacity |
Screenshot showing CO2 Storage analysis module.Discussion
The module focuses on the "Storage" component of CCUS (Carbon Capture, Utilization, and Storage). Its primary goal is to take raw well log and spatial data and transform them into a Static Storage Capacity estimate.
Before making the calculation it is important to calculate the porosity and to evaluate the irreducible water saturation.
The module typically employs the industry-standard DOE (Department of Energy) methodology for saline aquifers and depleted reservoirs. It calculates the theoretical and effective storage capacity using the following logic:
G_CO2 = A * H * PHI * RhoCO2 * E
- A: Area of the storage complex.
- H: Net thickness of the injection interval.
- PhiE: Porosity.
- Rho_CO2: Density of CO2 at reservoir temperature and pressure (calculated using built-in Equation of State models).
- E: Storage Efficiency Factor, which accounts for the fact that CO2 will not fill 100% of the pore space due to water displacement and heterogeneity.
The Pressure Available CO2 storage capability further restricts the calculation to account for when there will be pressure restrictions on further injection.
Related Insights
DCA: Type well curves
In this video I demonstrate how to generate a well set filtered by a number of criteria and generate a multi-well type curve. Before starting this video you should already know how to load your data and create a DCA project. If not, please review those videos. Type well curves are generated by creating a decline that represents data from multiple wells.
DCA: Loading Production data
In this video I demonstrate how to load production and well header data for use in a decline curve analysis project. The first step is to gather your data. You’ll need: Production data – this can be in CSV, Excel, or IHS 298 formats. For spreadsheet formats you’ll need columns for API, Date, Oil, Gas, Water (optional), and days of production for that period (optional). Well header data – this can be in CSV, Excel, or IHS 297 formats.
Sample data to get started
Need some sample data to get started? The files below are from data made public by the Wyoming Oil and Gas Commission. These will allow you to get started with petrophysics, mapping, and decline curve analysis. Well header data Formation tops data Deviation survey data Well log data (las files) Production data (csv) or (excel) Wyoming counties shapefile and projection Wyoming townships shapefile and projection Haven’t found the help guide that you are looking for?