Drilling Rig Rotary System - oilfieldteam.com
Figure 2-6 shows a schematic of a rotary drilling, direct circulation mud system that is used on a typical double (and triple) drilling rig. Direct circulation requires that the drilling mud (or treated water) flow from the slush pump (or mud pump), through the standpipe on the mast, through the rotary hose, through the swivel and down the inside of the kelly, down the inside of the drill pipe and drill collars, through the …
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