San Ramon. Chevron U.S.A. Inc., a wholly owned subsidiary of Chevron Corporation (NYSE: CVX), today announced that it has commenced operations on the Discoverer Inspiration, an ultra-deepwater drillship, in the U.S. Gulf of Mexico. The vessel has the capability to drill wells in 12,000 feet (3,650 meters) of water to a total depth of 40,000 feet (12,200 meters).

Washington. President Barack Obama's top environmental adviser urged the natural gas industry on Tuesday to disclose the chemicals it uses in drilling, warning that the development of massive U.S. shale gas reserves could be held back otherwise.

Calgary. Husky Energy Inc. (TSX: HSE) announced today that the Company has agreed to issue $700 million in medium term notes. The medium term notes will be issued in two tranches: $300 million at 3.75 percent maturing on March 12, 2015 and $400 million at 5.00 percent maturing on March 12, 2020. The transaction is expected to close on March 12, 2010, subject to customary closing conditions.

San Francisco. California's aggressive climate change policy is likely to lead to modest job losses in the near term due to higher energy costs and other factors, the state's independent budget watchdog said.