The company is investing more in liquefied natural gas projects in Asia and increased production at its huge Pearl gas-to-liquids plant in Qatar.

BBC: Royal Dutch Shell profits hit by oil price volatility

Natural gas plus natural gas plant liquids were 32.9 percent of U.S. production in the first quarter, a bit up over last year (32.7) and 2009 (32.4).

FORBES: Renewable Energy Production Surpasses Nuclear in U.S.