We're Sitting on 10 Billion Barrels of Oil! OK, Two  

Bloomberg has a look at the tendency to over-hype shale oil reserves - We're Sitting on 10 Billion Barrels of Oil! OK, Two.

Lee Tillman, chief executive officer of Marathon Oil Corp., told investors last month that the company was potentially sitting on the equivalent of 4.3 billion barrels in its U.S. shale acreage. That number was 5.5 times higher than the proved reserves Marathon reported to federal regulators.

Such discrepancies are rife in the U.S. shale industry. Drillers use bigger forecasts to sell the hydraulic fracturing boom to investors and to persuade lawmakers to lift the 39-year-old ban on crude exports. Sixty-two of 73 U.S. shale drillers reported one estimate in mandatory filings with the Securities and Exchange Commission while citing higher potential figures to the public, according to data compiled by Bloomberg. Pioneer Natural Resources (PXD) Co.’s estimate was 13 times higher. Goodrich Petroleum Corp.’s was 19 times. For Rice Energy Inc., it was almost 27-fold.

“They’re running a great risk of litigation when they don’t end up producing anything like that,” said John Lee, a University of Houston petroleum engineering professor who helped write the SEC rules and has taught reserves evaluation to a generation of engineers. “If I were an ambulance-chasing lawyer, I’d get into this.”