The U.S. oil production decline has begun. It is not because of decreased rig count. It is because cash flow at current oil prices is too low to complete most wells being drilled. The implications are profound. Production will decline by several hundred thousand barrels per day before the effect of reduced rig count is fully seen. Unless oil prices rebound above $75 or $85 per barrel, the rig count won’t matter because there will not be enough money to complete more wells than are being completed today. Tight oil production in the Eagle Ford, Bakken and Permian basin plays...