Under broader pressure from the so-called Brexit, crude oil prices moved lower early Monday on a hangover from higher U.S. exploration and production work. Energy companies working in shale oil basins in the United States have adapted to lower price points so that, once the market does recover, they’re more efficient at returning to work. After forecasting production declines for 2017, U.S. federal data instead show steady gains and production so far in March has been at around 9 million barrels per day. Data last week from oilfield services company Baker Hughes showed an increase in the number of rigs deployed in the United States for the ninth week in a row. Rig counts serve as a rough estimate of exploration and production, which in itself is indicative of energy sector spending and confidence. Gains in production from the United States, and producers from the Organization of Petroleum