InCapture – GHG23-3 Preliminary Permit Evaluation  

InCapture – GHG23-3 Preliminary Permit Evaluation  

CarbonCQ was engaged by InCapture to undertake a CO2 storage feasibility assessment for GHG23-3 (now G-15-AP) ahead of the 2023 Offshore Green House Gas acreage release.

GHG23-3 is located approximately 125 km offshore Karratha in the north of Western Australia in 100 to 200 m water depth. The assessment reviewed the storage potential of the Jurassic aged Legendre formation within the nominated area. Three primary CO2 storage targets were identified which related to mapped structural closures, each with an exploration well penetration.

Storage capacity was evaluated for two primary sites through a range of 3D reservoir models, supported by screening level development concepts. The early insights into the permit storage potential gave InCapture the confidence to apply for GHG23-3 in the acreage release.

The feasibility report documented:

 

  • The storage capacity and efficiency factor evaluation methodology.
  • The 3D dynamic reservoir simulation modelling undertaken in support ofstorage capacity assessments.
  • Quantification of key subsurface uncertainties
  • High-level project development considerations, including well number and flow assurance requirements.

 

CarbonCQ was subsequently engaged by InCapture to provide both technical and commercial support for its application for GHG23-3 in the GHG acreage release. InCapture was successful in its application and was awarded as permit G-15-AP in August 2024. CarbonCQ was included in the application and secured itself a 5% interest in the permit.