1. n. [Drilling Fluids]

An oven into which mud-testing cells are placed. Ovens usually have a set of horizontal rollers inside and are also called roller ovens. Mud-aging cells are placed on the rollers. In pilot tests, rolling the cells allows a film of mud to continually contact the hot wall of the cell. Another type of oven tumbles cells end-to-end. Most ovens can also be used for static-aging tests.

See: mud-aging cell,  pilot test,  rolling aging test,  static aging test