Figure F17. Investigation of borehole condition in Hole C0001D by comparing real-time gamma ray log (GRM1) in Hole C0001A with geoVISION memory gamma ray log (GR) in Hole C0001D. Orange bands = low rate of penetration (ROP) and high standpipe pressure (SPPA) (potential major washouts with possible impact on sonic and resistivity data), yellow bands = potential minor washouts associated either with higher ROP and/or lower SPPA (no noticeable effects on the deep investigation measurements such as VP and resistivity). LSF = LWD depth below seafloor.
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