With 2012 representing what many thought was a low point in the energy services sector, energy investors have been hopeful that 2013 would signal a rebound. Now, however, two of the giants in this space are reporting opposing outlooks, with Schlumberger (SLB 1.91%) saying that it isn't seeing as strong of an uptick as it had hoped, while Halliburton (HAL 5.50%) isn't as bearish in its outlook. How will this earnings season pan out for these energy services giants and their investors? In this video, Motley Fool energy analysts Taylor Muckerman and Joel South address some broader trends in the energy services sector, and tell investors which companies will be affected.