RV MARIA S. MERIAN Fahrtbericht / Cruise Report MSM78 - PERMO 2, Edinburgh - Edinburgh (U.K.), 16.10. - 25.10.2018

Porosity and free gas estimates from controlled source electromagnetic data at the Scanner Pockmark in the North Sea

“…1). The 60-mm-diameter cores were extracted during cruise MSM78 (Karstens et al, 2019) using the remotely operated Rock Drill 2 system (RD2, British Geological Survey). The RD2 drilled 35 m deep through unconsolidated glaciomarine sediments and tills with at least 24% recovery.…”

“…The RD2 drilled 35 m deep through unconsolidated glaciomarine sediments and tills with at least 24% recovery. The patchy, low-rate recovery is attributed to the presence of intervals dominated by low-cohesion sandy sediments, whose structure did not sustain the drilling stress and which therefore fell out of the core liner during recovery (Karstens et al, 2019).…”

“…Offshore carbon storage sites currently encompass reservoir rocks that are typically a couple of kilometres below the seafloor and are sealed with low-permeability cap rocks, such as the proposed (Berndt et al, 2017) are marked as black lines, and CSEM ocean bottom instruments as yellow dots. The Rock Drill 2 reference drill site from cruise MSM78 (Karstens et al, 2019) is shown as a red dot about 6 km to the East of the CSEM survey.…”