• Periode | 2019 - 2022
  • Land |
  • Marked | Offshore energi
  • Prosjektleder | Elin Skurtveit
  • Samarbeidspartner |
  • Klient |
FoU program|

FRISK

The FRISK research project focus on the risk related to faults in reservoirs under consideration for CO2 storage. The work will form the basis for identifying uncertainties associated with faults and contribute to qualification of faulted reservoirs as safe CO2 storage sites.
Quantification of fault-related leakage risk

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There is high uncertainty associated with assessing the sealing properties of faults. Although the industry has a lot of experience in evaluating faults, there is a need to look at new methods for calculating how fault properties such as permeability and stability are affected when CO2 is injected into a reservoir. The research activities in FRISK will be linked to the storage prospects that are being developed on the Horda Platform in the North Sea and will focus on developing new methods for calculating how fluid migrates within faults. The work will form the basis for identifying uncertainties associated with faults and contribute to qualification of faulted reservoirs as safe CO2 storage sites.

The main objective in FRISK is to reduce the uncertainty in fault related leakage risk for large-scale CO2 storage by developing an improved fault derisking framework that includes dynamic pressure changes and along-fault fluid migration. The main objective will be addressed by answering to the four secondary objectives:

  1. Characterize and quantify fault complexity based on seismic interpretation and fault imaging in 3D seismic from Smeaheia
  2. Improved interpretation of existing experimental data, targeting post-failure flow behaviour and stress-dependent flow properties
  3. Develop effective fault flow models for use in reservoir simulation tools using fine-scale simulations
  4. Characterize fault-related leakage rates and quantify uncertainty in key controlling parameters

More information about separate work packages in the project will become available (link above - Sub-projects).

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The FRISK project is supported by Equinor, Total and the NCCS consortium (link to NCCSweb page https://www.sintef.no/projectweb/nccs/ ) Research partners are: NGI, NORCE, UiO and UiB.

NGI will contribute with solid background in mechanical testing of reservoir, caprock and faulted materials, as well as experience in risk quantification in geoscience. This expertise will be used to carry out advanced experimental interpretation within the project.

NORCE (Uni Research CIPR) has extensive expertise in reservoir simulation, fault mechanics, uncertainty quantification and software engineering. In-house VESA software, a unique purpose-built simulation tool for CO2 storage, will be utilized and developed. NORCE also will contribute with expertise in commercial reservoir simulation (Eclipse, CMG-GEM).

UiO will contribute with comprehensive expertise on the geology of the Norwegian continental shelf as well as on fault characterization from outcrop based and seismic datasets. UiO will provide state-of-the-art knowledge on fault modelling and contribute with knowledge sharing, covering detailed faults properties and input to reservoir modelling.

UiB will providing extensive expertise in mathematical and numerical modelling of fracture flow and deformation. The UiB group coordinates development of the open-source software PorePy that will be used in the project.

International collaboration

BEG/University of Texas at Austin (Tip Meckel): The Bureau of Economic Geology (BEG) at the University of Texas at Austin (UT-Austin) has since 1998 through the Gulf Cost Carbon Center (GCCC) worked with geological sequestration of CO2 focusing on the Gulf of Mexico (GoM). GCCC has experience from a number of diverse projects related to field characterization, storage capacity and risk of leakage.

Swisstopo (Christophe Nussbaum): Ongoing fault stimulation experiments in the Mont Terri Field laboratory is expected to provide new information on the hydro-mechanical coupling in faults and knowledge sharing is of mutual interest for the development of fault models.

Heriot-Watt University (Florian Doster): HWU has a well-established research program on flow in fractured media.

The DETECT project funded by ACT (led by Shell) will examine the field-scale impact of fracture flow and deformation, which is complementary to activities in WP2 and 3.

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