دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

v: to close a ram blowout preventer around the drill pipe when the annular preventer has previously been closed to offset the effect of heave on floating offshore rigs during well-control procedures.

using short pieces of pipe to property position the top of the string to hang off while keeping the bottom of the string in the correct position and with the correct tension.

n: Pipe rams that can close over a range of pipe sizes.VBRs cannot be used to hang off the drillstring.