A subsidiary of Chevron terminated a contract for a rig working in deep U.S. waters in the Gulf of Mexico nearly a year early, Transocean announced. “A subsidiary of Chevron elected to exercise its contractual option to terminate the drilling contract for the ultra-deepwater drillship Discoverer Clear Leader, effective November 2017, prior to its expiration in October 2018,” the company said in a statement . The rig was last listed in Transocean’s fleet status report as deployed in the Gulf of Mexico at a day rate of $575,000, an increase of 1 percent from the previous rate to lease the rig each day. Transocean said it would realize a lump-sum $148 million for contract termination […]