U.S. oil producers are rushing to take advantage of the rebound in oil markets by locking in prices for next year and beyond, safeguarding future supplies and possibly paving the way for a rebound in production. The flurry of hedging activity in the past month will help sustain producers’ revenues even if oil markets tumble again, which is bad news for OPEC nations, such as Saudi Arabia, that are counting on low prices to stunt the rapid rise of U.S. shale and other competitors. Oil drillers are racing to buy protection for 2016 and 2017 in the form of three-way collars and other options, according to four market sources familiar with the money flows. In some cases, that means guaranteeing a price of no less than $45 a barrel while capping potential revenues at $70. U.S. crude futures traded just below $60 a barrel on […]