NEW YORK ( Real Money) -- Does it bother anyone else that just a few days ago we were hearing that the glut in U.S. oil is now going to cause a gigantic widening in the spread between Brent and West Texas and all that's happened since then is that the two have converged? Does it bother anyone else that not one, but two, major firms upgraded the refiners at precisely the moment when the convergence started? Has it become perceived wisdom that the oil in this country's just going to become more and more bountiful may actually not be true? These are all of the issues that need pondering now that West Texas is back to $98 and the move below $90 that so many had been expecting seems to be way off base right now. I think there's a war going on under the surface of this oil market. On the one hand there's the Mark Papa school of thought. Mark's the amazing oil man who built EOG ( EOG) into the greatest exploiter of the two most important shales of the era: Eagle Ford and Bakken. His company's the fastest growing of the major independents and even as he is retiring, he's still finding oil, including a big prospect in the Delaware Basin of the Permian. Mark's been saying that the era of free money, where more and more oil is found and sold at higher and higher prices, might be over. The big finds are going to start peaking, he believes, and at the same time, the price domestically may no longer be going up because we are producing so much oil. On the other side is the duo of Scott Sheffield and David Demshur, who believe that the best is yet to come. No, by far the best is yet to come. Pioneer's ( PXD) Sheffield says his company is sitting on the second-biggest oil field in the world after Saudi Arabia: the Spraberry. Even though it was discovered in 1949, it still has far more oil in it that North Dakota's Bakken and the Eagle Ford of Texas. While the judgment does seem on the hyperbolic side, Demshur of Core Labs ( CLB), the foremost reservoir mapping technology company, says it could very well be that big.