Shale oil companies are ready to play chicken with supply and demand again. Roiled by a year that began with crude at a 12-year low and ended with a surprise OPEC agreement boosting prices, U.S. producers including Continental Resources Inc. and Pioneer Natural Resources Co. are promising not to overreact — or overspend. The temptation will be strong: a recovery in prices has already spurred drilling activity in the U.S. to the highest since January. If oil passes $70 a barrel, the U.S. could start pumping out an extra million barrels a day, offsetting much of the planned cut from the Organization of Petroleum Exporting Countries, according to a Citigroup Inc. analysis. With President-elect Donald Trump promising to ease industry regulations and analysts predicting better earnings for 2017, shale drillers are gearing up for growth. “There’s a real concern by industry that we could be in for another one […]