دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: 1. (obsolete) a mud pit in which a supply of drilling fluid is stored. 2. a waste pit, usually an excavated earthenwalled pit. It may be lined with plastic or other material to prevent soil contamination.

tank or pit for used/discarded mud, or a secondary mud supply.