دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a mobile submersible drilling structure consisting of a barge hull that rests on bottom. steel posts that rise from the top of the barge hull. and a deck that is built on top of the posts. well above the waterline. It is used to drill wells in water no deeper than about 30 to 35 feet (9 to 10.7 metres). Most posted barge submersibles work in inland gulfs and bays. See submersible drilling rig.