EOG Resources Inc. (EOG)

[4TRESS]

EOG's discoveries in the Powder River Basin bode well for other oil companies looking for new shale plays in the area. Chesapeake Energy (NYSE: CHK) stated in its second-quarter earnings release that the Powder River Basin was "quickly establishing itself as the growth engine of the company" thanks to the strong drilling results it has seen from wells in the Turner formation. Because of that, Chesapeake currently has five rigs operating in the area, all of which it has primarily focused on the Turner. However, the company noted that it's exploring the potential of adding a sixth rig next year, which could enable it to target other formations in the region such as the Mowry and Niobrara. EOG's results in those two plays are cause for increased optimism that Chesapeake could also be sitting on a massive oil and gas resource in the region.