Figure F3. Operation time vs. penetration depth, Hole U1374A. Major operation milestones are labeled. Dashed line = planned penetration, solid red line = actual penetration. Rot. = rotation, ROP = rate of penetration. FFF = free-fall funnel, BHA = bottom-hole assembly, triple combo = triple combination, GBM = Göttingen Borehole Magnetometer, FMS = Formation MicroScanner-sonic, UBI = Ultrasonic Borehole Imager.
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