captions transcript BF-064: Oil Well Work Over Rig - Otis Engineering Description: The film depicts a demonstration of personnel from Otis Engineering assembling parts of a work over drilling rig using a Bell 204. No sound. Date: May 30, 1964 Duration: 7 minutes 45 seconds Creator: Bell Helicopter Textron Item Type: Refine your search to only Video Partner: UNT Libraries Special Collections