SYDNEY - [AAP] Origin Energy's (ASX: ORG) half-year oil and gas production rose 12 per cent, while revenue grew 40 per cent.

Production for the six months to December 31 rose to 172.6 petajoules, helped by a 15 per cent increase in production from Australia Pacific Liquefied Natural Gas (LNG) with two LNG trains on line and increased production at Bass Basin in southern Australia.

Sales revenue rose to $1.4 billion, from $973.9 million in the prior corresponding period, driven by an increase in LNG sales and higher average prices realised across all products.

December quarter production was down six per cent on the September quarter to 83.5 petajoules, due to lower customer demand and a seven-day plant shutdown at the Lattice Energy operations it Otway, Victoria.

But oil and gas sales revenue for the December quarter grew one per cent from the previous three months, to $686.3 million, with lower volumes from Otway more than offset by increased LNG sales by Australia Pacific LNG.

Origin, in September, agreed to sell Lattice Energy to Beach Energy for $1.6 billion but also secured access to a significant portion of Lattice's future east coast gas production through long-term gas supply agreements.

The sale is scheduled to be completed on Wednesday with the proceeds set to be used to pay down debt.

Chief executive Frank Calabria said Australia Pacific LNG continued to perform well in the December quarter and delivered reliable upstream and downstream production.

Mr Calabria also flagged Australia Pacific LNG will complete a planned maintenance program during the March quarter, with one train outage for approximately 16 days.

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