Figure F3. Drawings of bottom-hole assembly configurations used during Expedition 338. A. Riser configuration, Hole C0002F. B. Riserless configuration, Hole C0012H. C. Riserless configuration, Holes C0018B, C0021A, and C0022A. Total length from tool zero to each measurement point is shown next to the tools. BHA diameter dimensions are 12.25 inches (31.1 cm) for the bit; 21 cm for geoVISION, arcVISION, TeleScope, and sonicVISION; and a maximum of 20 inches (50 cm) for the underreamer. MWD = measurement while drilling, PDC = polycrystalline diamond compact.
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