rabbit rate of penetration rathole ream reciprocating revolutions per minute riser RKB rotating off bottom (ROffB) rotating on bottom (ROnB) rotational viscometer rotating weight
Rotating Off Bottom (ROffB)
Pipe rotates without any axial movement, such as rate of penetration or tripping. There is no weight on bit (WOB) or torque on bit (TOB) because the bit is not engaged with formation.
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