Version Log

Brief description of update Revised by (name) Benefit to CO2 Stored and users When CO2 Stored updated Preliminary Overall Theoretical Capacities [106 Tonnes]
Update of hydrocarbon field storage units not previously within the database by the IDRIC-supported CO2Stored 2.0 project as follows:
  • Hydrocarbon field data for new storage units downloaded from the North Sea Transition Authority production database in July 2021. Ultimate Recoverable Reserves data reflect the cumulative production volumes as of July 2021.
  • Database populated with information for each new storage unit, including depth, stratigraphy, thickness, temperature, pressure and well numbers.
S Ghanbari, E Mackay, Heriot-Watt University; K Kirk, J Williams, C Blackburn, M Akhurst, BGS
  • CO2 storage data for 61 hydrocarbon field storage units not previously available in CO2Stored.
18th December 2023 p90: 64,635
p50: 71,560
p10: 78,485
Update of hydrocarbon field storage units already populated within the database by the IDRIC-supported CO2Stored 2.0 project as follows:
  • Hydrocarbon field volumes updated for existing hydrocarbon field, using data downloaded from the North Sea Transition Authority production database in July 2021. Whereas the initial UK Storage Appraisal Project database included decline curve analysis to predict final production values, or inferred these from reported Ultimate Recoverable Reserves, the data now reflect the cumulative production volumes as of July 2021;
  • Estimated Cessation of Production (CoP) dates removed, so CoP only provided where the field had ceased production by July 2021;
  • Some minor corrections to units where spurious data have been identified or are missing, i.e., Stock Tank Oil Initially In place (STOIIP), viscosity etc.
S Ghanbari, E Mackay, Heriot-Watt University; K Kirk, J Williams, C Blackburn, M Akhurst, BGS
  • Hydrocarbon production data now reflect values available at time of this update, providing clarity as to how the cumulative production figures were derived. This methodology can be replicated in the future to update the values based on continuing production;
  • No requirement to estimate CoP dates, which become quickly outdated.
9th November 2023 p90: 62,509
p50: 69,506
p10: 76,503
Provision of economic data no longer supported due to lack of updates to capital and operational cost estimates. K Kirk, J Williams, C Blackburn, M Akhurst, A Baptie, BGS 27th September 2023 No changes
Update of storage units investigated by UK government and industry investigations, by the IDRIC-supported CO2Stored 2.0 project from the following:
  • BEIS- and industry-supported UK Key Knowledge Documents produced by the Peterhead and White Rose CCS projects;
  • Storage Development Plans produced by the ETI-supported Strategic Storage Appraisal Project.
K Kirk, J Williams, C Blackburn, M Akhurst, A Baptie, D Sutton, BGS Storage capacity revised for storage units:
  • Goldeneye Gas Condensate Field and Endurance structure (Bunter Closure 35);
  • Viking Gas Fields, Hamilton Gas Field, Bunter Closures 36, Captain Fairway aquifer, Captain Main aquifer and Forties 5 aquifer storage units.
27th September 2023 p90: 62,714
p50: 69,736
p10: 76,758
Update of closures and properties in the East Irish Sea Basin (EISB) by interpretation of 2D and 3D seismic and well data:
  • removal of twelve Ormskirk Sandstone saline aquifer units and addition of three Ormskirk Sandstone saline aquifer units;
  • remapping of Collyhurst Sandstone and addition of closures;
  • update of pressure data based on regional compilation of pressure and stress data;
  • update of observed and measured storage unit properties, likelihood and confidence assessments for the Ormskirk and Collyhurst sandstones;
  • refresh and update of calculated fields, including storage capacity and risk fields.
K Kirk, C Gent, S Hannis, J Williams, C Blackburn, M Akhurst, A Baptie, D Sutton, BGS Storage capacity revised for storage units:
  • Removal of shallow Ormskirk Sandstone daughter units to provide more realistic estimates of storage capacity. Additional daughter units added based on new interpretation of seismic and well data in Collyhurst Sandstone by addition of five saline aquifer storage units Collyhurst Closures 1 to 5;
  • updated storage capacity in the EISB;
  • increased confidence in storage capacity values and understanding of storage unit integrity.
27th September 2023 see above
  • Update of download data to include theoretical capacity values.
C Blackburn, BGS
  • Provides more data to users.
17th January 2022 No changes
  • Update of download data to include full numerical significance for all values, as held in the database.
  • Further translations of confidence, risk and failure codes.
C Blackburn, BGS
  • Facilitates improved calculations by users.
  • Provides clearer, more readable data.
8 December 2021 No changes
  • Update of fracture pressure estimates for saline aquifer storage units by application of a regional function to describe the relationship of fracture pressure with depth.
  • The regional function is derived from best-fit curves on plots of measured well pressure data (leak off tests) and incorporating pressure of the overlying water column.
  • Two regional depth and pressure functions are determined for:
    • Central and Northern North Sea
    • Southern North Sea (also applied to the East Irish Sea and English Channel)
  • The methodology, and evaluation by statistical analysis and pragmatic appraisal is described in CO2Stored project document 'Overview of fracture pressure calculation methodology work for CO2 stored.docx'
S Holloway M Bentham, M Lark and J Williams, BGS
  • Integration of the fracture pressure calculation algorithm into CO2Stored to ensure the integrity of the database
  • Consistency of a fundamental calculated parameter, on which others are based, for the storage units
  • Improved fracture pressure estimates for saline aquifer storage units
  • Estimated fracture pressure values for saline aquifer units that are consistent with values for hydrocarbon field storage units
  • Increased confidence in the maximum, minimum and most likely fracture pressure values and storage capacity for each saline aquifer storage unit
18 May 2015 p90: 61,768
p50: 68,666
p10: 75,564

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