دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a small mud tank with a capacity of 10 to 15 barrels (1,590 to 2,385 litres),usually with 1-barrel or � barrel (159-litre or 79.5-litre) divisions, used to ascertain the amount of mud necessary to keep the wellbore full with the exact amount of mud that is displaced by drill pipe. When the bit comes out of the hole, a volume of mud equal to that which the drill pipe occupied while in the hole must be pumped into the hole to replace the pipe. When the bit goes back in the hole, the drill pipe displaces a certain amount of mud, and a trip tank can be used again to keep track of this volume.

n: A kind of private small metal can with scale,which be used to complement drill fluid when trip out .

a smaller tank that holds the fluids form running or pulling a string of pipe. Because of its smaller volume, it is used to quickly spot incoming kicks or fluid losses.