CASP has announced the release of their latest report from their Bunter Sandstone Storage Complex research theme: 'Composition and sealing capacity of the Haisborough Group in the Southern North Sea'.

The report provides new sedimentological, geochemical, and petrophysical data from the topmost Bunter Sandstone Formation / Lower Germanic Trias Group and the Haisborough Group / Upper Germanic Trias Group.

Based on analysis of four offshore wells from the UK and Dutch sectors of the Southern North Sea — plus reference data from well SM14 in North Yorkshire — this study offers rare insights into an interval seldom cored.

Key results: 

• Detailed sedimentary logs from four core sections — 2 in the UK and 2 in the Dutch sector — identify 12 lithofacies comprising 7 lithofacies associations representing 7 depositional environments, including terminal fluvial, claypan to sabhka, and salt lake to lagoonal settings.
• QXRD and SEM-EDS analyses, together with high-resolution handheld XRF measurements, provide robust compositional characterisation.
• MICP measurements on 21 samples enable the calculation of supported CO₂ column heights and a direct assessment of seal capacity.

The report builds on findings from our earlier report (CASP.BSSC.6) and is a significant step forward in understanding the sealing capacity of the offshore Haisborough / Upper Germanic Trias groups in the Southern North Sea.

The report authors are Simon Schneider, Michelle Shiers, Michael Flowerdew, Colm Pierce, Michael Pointon, Benoit Vautravers and Stephen Vincent.

The full report is 109 pages with 4 enclosures and comes with a 230-page appendix detailing sample petrography and SEM-EDS analyses.

KeyFacts Energy Industry Directory: CASP