U.S. oil producers are bailing out of long-term contracts for drilling rigs as crude prices sink below $50, another signal that the nation’s shale boom is slowing. Yesterday, Helmerich & Payne Inc. (HP) , the biggest rig operator in the U.S., said it had received early termination notices for four contracts. Today, a second contract driller, Pioneer Energy Services Corp. (PES) , said four rigs had been canceled early. Producers may cut short another 50 to 60 agreements, according to Bloomberg Intelligence analyst Andrew Cosgrove. Companies are paying to cancel rigs rather than keep drilling in the face of a 55 percent plunge in prices. Mounting rig cutbacks imperil the unprecedented boom in U.S. output that’s contributed to a global glut of oil and helped sustain a price war among the world’s largest suppliers. “This is just the beginning,” R.T. Dukes, an upstream analyst at Wood Mackenzie Ltd., said […]