The following video is from Tuesday's Digging for Value, in which host and Motley Fool analyst Joel South teams up with contributor Tyler Crowe to dive deep into the top stories for today's energy sector investors.

In this segment, Tyler takes a look at three of the big names in the rig industry -- Ensco (VAL), Seadrill (SDRL), and Diamond Offshore (DO)-- and determines which is today's best buy, which requires a little patience to make a move on, and which to sell from your portfolio.