This segment is from Thursday's edition of 'Digging for Value', in which sector analysts Joel South and Taylor Muckerman discuss energy & materials news with host Alison Southwick. The twice-weekly show can be viewed on Tuesdays & Thursdays. It can also be found on Twitter, along with our extended coverage of the energy & materials sectors @TMFEnergy.

Within a week, CEOs from two of the biggest players in the offshore drilling market announced their retirements. The situation at National Oilwell Varco (NYSE:NOV) seems a bit more put together, with COO Clay Williams having held multiple roles within the company and clearly groomed for the role. The story over at Ensco (NYSE:ESV) is a bit more unclear. Tune in below for Motley Fool analyst Taylor Muckerman's feelings on both situations. 

Joel South has no position in any stocks mentioned. Taylor Muckerman owns shares of Ensco. The Motley Fool recommends National Oilwell Varco. The Motley Fool owns shares of National Oilwell Varco. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.