U.S. shale oil production is poised for a significant boost, with BloombergNEF (BNEF) forecasting a 4.5% increase in output to 13.9 million barrels per day by 2025. This represents an additional 600,000 barrels per day compared to this year, thanks to improved well productivity and more efficient drilling and fracking techniques. It should be noted that BNEF's projection is more optimistic than the U.S. Energy Information Administration's (EIA) estimate of 13.7 million barrels per day, and decidedly more optimistic than OPEC's estimate for U.S.…