This segment is from Tuesday'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.

Taking a look ahead, some of the country's small- to mid-sized refiners will be announcing earnings later this week. Motley Fool analyst Taylor Muckerman lays out what he will be looking for with companies such as CVR Refining (NYSE:CVRR), Marathon Petroleum (NYSE:MPC) and Western Refining (NYSE:WNR). If you'd like go get a bit of an idea how they might have fared, check out Phillips 66 (NYSE:PSX) today. While it is a much larger company, its geographic diversification could help hint at how these regional players performed. 

These 3 companies have been keeping refiners busy lately

Joel South has no position in any stocks mentioned. Taylor Muckerman has no position in any stocks mentioned. The Motley Fool owns shares of Western Refining. 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.