Latest research results

CO2CRC Otway project Stage 2 - latest results
  • The injection of CO2 into a saline formation is safe
  • CO2 can be stored safely for over 1,000 years
  • Permanent subsurface real-time monitoring of 15,000 tonnes of CO2 is reliable
  • Minimum detection levels of less than 5,000 tonnes of CO2
  • Impurities in CO2 were found to not affect the storage capacity or the formation fluid of the geological reservoir
  • The modelling of CO2 plume movement is accurate

 

CO2CRC Otway project Stage 2

Appraisal

  • 2A: Drill CRC-2 Well
  • 2B: Measure parameters affecting residual and dissolution trapping in a saline formation
  • 2B Extension: interactions with impurities & well test refinement

Operation

  • 2C: Spatially track injected CO2 in a saline formation
  •             Minimum detection limit
  •             Migration behaviour
  •             Stabilisation
Stage 2A: Drill CRC-2 well

 

CRC2well

 

  • Total depth: 1565m
  • Total days: 20.25
  • 29 cores, 176.1m of core recovered with a 94.7% recovery rate

 

CO2 can be safely stored for over 1,000 years

2B: Measure parameters affecting residual and dissolution trapping in a saline formation

Objective: Determine the residual CO2 saturation, (Sgr)

Five independent measurement approaches to determining residual trapping:

  • Saturation logging using Residual Saturation Tool
  • Thermal test
  • Tracer tests
  • Pressure test
  • Dissolution test

 

_BPP7565

2B Extension: interactions with impurities and well test refinement

110 tonnes CO2 captured from Callide Oxyfuel Services Pty Ltd’s (COPL) Callide A Oxyfuel project in Queensland was stored at Otway. Some small amounts of carbon dioxide were also stored containing impurities commonly found in carbon dioxide collected from coal fired power plants. The impurities were found to not affect the storage capacity or the formation fluid of the geological reservoir.

 

2C: Spatially track injected CO2 in a saline formation

Otway Stage 2C preliminary results:

  • The injection of CO2 into a saline formation is safe
  • Permanent subsurface real-time monitoring of 15,000 tonnes of CO2 is reliable
  • The modelling of CO2 plume movement is accurate
  • Minimum detection levels of CO2 have been identified

The combination of these results, with ongoing regular monitoring through to 2019, will de-risk the injection, monitoring and trapping of CO2 in a saline formation giving confidence to technology users and regulators.