Description
This project assessed the technical viability of a process called GeoCAES. The process stores electrical energy by injecting natural gas into shale gas formations using a compressor, storing it, and producing it through an expander to generate electricity. This data submission includes the models of temperature and pressure changes in the wellbore, surface plant equipment (compressor and expander), and the code used in CMG GEM reservoir modeling software to simulate injection and production.
Note - the wellbore and surface plant equipment models use the REFPROP Excel Add-in from NIST (linked in submission) to calculate natural gas properties.
Note - the reservoir model code requires a license for the Computer Modeling Group (CMG) GEM reservoir modeling software (linked in submission) to run it.
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| CMG Input - Diurnal Cycling 6 hour intervals.dat | DAT | This file contains the model inputs used to model the unconventional shale gas reservoir using the CMG GEM reservoir model (linked in code under "Computer Modeling Group GEM Reservoir Modeling Software"). This file contains the code simulates cyclic injection and production from a reservoir for diurnal storage. The code assumes 6 hours of injection, 6 hours of storage, 6 hours of production, and 6 hours of rest before the cycle begins again. | Open resource |
| CMG Input - Seasonal Cycling 90 day intervals.dat | DAT | This file contains the model inputs used to model the unconventional shale gas reservoir using the CMG GEM reservoir model (linked in submission under "Computer Modeling Group GEM Reservoir Modeling Software"). This file contains the code simulates cyclic injection and production from a reservoir for seasonal storage. The code assumes 90 days of injection, 90 days of storage, 90 days of production, and 90 days of rest before the cycle begins again. | Open resource |
| Hagoort Method - Prediction of Temp in Natural Gas Wellbore.xlsm | XLS | This file contains a model developed by Jacques Hagoort and described in "Prediction of wellbore temperatures in gas production wells" (linked in submission) for estimating the temperature and pressure of gas in the wellbore during production. The model was modified to simulate injection as well. The user inputs well inlet properties such as pressure temperature, and flow rate and well details and the model estimates the gas properties at the well outlet. The user can run the model using macros for a single case or can run multiple cases at once using the "Calculate" tab. | Open resource |
| LCOS Model.xlsx | XLS | This file contains the model and calculations used to estimate the levelized cost of storage (LCOS) for energy storage projects. Several example calculations are included and the results are shown in figures. | Open resource |
| Surface Plant Model.xlsx | XLS | This file contains models for the surface equipment used in the GeoCAES sytsem. The surface plant consists of a compressor and expander and the file contains models that calculate power based on inlet and outlet conditions. The model uses the REFPROP Excel Add-In (linked in submission under "REFPROP Excel Add-in from NIST") to calculate the properties of natural gas for the model. The file also contains results of a parametric study of compressor /expander power as a function of inlet and outlet conditions. | Open resource |
| Computer Modeling Group GEM Reservoir Modeling Software | Unknown | The software found in this link is required to run the reservoir model code. | Open resource |
| REFPROP Excel Add-in from NIST | HTML | The software found in this link was used by the wellbore and surface plant equipment models to calculate natural gas properties. | Open resource |
| Prediction of wellbore temperatures in gas production wells | HTML | This report contains a model used in "Hagoort Method - Prediction of Temp in Natural Gas Wellbore" | Open resource |