n: a small enclosure on the rig floor used as an office and/or as a storehouse for small objects. Also, any small building used as an office or for storage.

A portable, one-room shelter at a well site for the convenience and protection of the drilling crew and others. The doghouse serves as lunch room, change house, dormitory, and for keeping small supplies and records.

A doghouse (chiefly in American English) or a kennel is a small shed, often built in the shape of a little house, in which a dog is kept or can run into for shelter from the elements.