You have to give Royal Dutch Shell (NYSE:RDS-A) (NYSE:RDS-B) this: At least when it knows it will have a lousy quarter, it gives investors a heads-up. The company recently announced that this coming quarter and full-year earnings will be down more than 40%. Yikes. Since Big Oil companies do run in similar circles, it makes us wonder what we can expect from these companies down the road. 

Will Chevron (NYSE:CVX) be able to turn around its maintenance problems from the previous quarter? And what about ExxonMobil's (NYSE:XOM) and Total's (NYSE:TOT) absolutely disastrous performances from the refining side of the business? Tune into the video below to find out what we might come to expect for these major players when they report earnings this quarter and what it means in the grand scheme of things for investors.