Figure F40. Caliper log, gamma radiation (GR), equivalent circulating density referenced to the seafloor (ECDrsf), and annular overpressure while drilling (APWD*) in Hole U1319B. Linear increase of annular pressure while drilling (APWD), near-constant APWD*, and decreasing ECDrsf are interpreted as features of a stable borehole without flow problems. SF = seafloor.
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