UPDATE 1-Eni Q2 net profit jumps more than expected

* Adj net profit 1.63 bln eur, tops consensus forecast

* Sees 2010 hydrocarbon output in line with 2009

* To offer 0.5 euro interim dividend, in line with f'casts

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MILAN, July 28 (Reuters) - Italian oil and gas company Eni SpA (ENI.MI) said on Wednesday its full-year output will be in line with 2009, as it posted an 80.2 percent rise in adjusted net profit in the second quarter boosted by higher oil prices.

Eni, which has an above-average exposure to the gas market, said natural gas sales in the quarter fell 6.2 percent and added it sees full-year world gas sales lower than in 2009.

Earlier on Wednesday, Britain's BG Group Plc (BG.L) reported a rise in second-quarter underlying profits thanks to higher oil and gas prices, although gas production fell. [ID:nLDE66R06C]

In a statement, Eni said its second-quarter adjusted net profit was 1.63 billion euros ($2.10 billion), above a Thomson Reuters analyst consensus of 1.479 billion euros.

The company said it will pay an interim dividend on 2010 results of 0.5 euros per share, in line with market expectations.

Refining throughputs on Eni's account are expected to increase in 2010, it said.

On Tuesday buoyant refining margins boosted earnings for the U.S. Valero Corp (VLO.N). [ID:nN27108116]

At 1031 GMT Eni shares were flat at 15.84 euros while the STOXX Europe 600 Oil and Gas index .SXEP was down 0.6 percent.

(Reporting by Stephen Jewkes; editing by Elaine Hardcastle)