دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a bailing device with a release valve. usually of the disk or flapper type. used to place. or spot, material (such as cement slurry) at the bottom of the well. dump meter n: a liquid-measuring device consisting of a small tank with narrowed sections at top and bottom that automatically fills and empties itself and records the number of dumps.

a hollow tube with a flapper or other opening valve at the bottom, run on wireline to place cement or sand in a well.