/ Source: The Associated Press
Shares of some top oil companies are up at noon:
Chevron rose $2.89 or 3.7 percent, to $79.99.
ConocoPhillips rose $1.99 or 3.6 percent, to $56.67.
Exxon Mobil rose $1.52 or 2.4 percent, to $65.22.
Marathon Oil rose $1.13 or 3.7 percent, to $31.57.
