* BHP misses iron ore guidance by 3 mln/t
* Sees only incremental lift in FY17 iron ore output
* Also tips copper, metallurgical coal to rise
* Less petroleum output this year (Recasts, adds quotes, forecasts, CEO comment)
SYDNEY, July 20 (Reuters) - BHP Billiton BHP.AX BLT.L said it aims to boost its iron ore output by up to seven percent this year as it works its existing mines harder, after narrowly missing its target for fiscal 2016 due to the Samarco disaster in Brazil.
Output at BHP's Western Australian mines rose by 5 percent quarter-on-quarter to 64.6 million tonnes, pushing the annual total to 257 million tonnes against guidance of 260 million. BHP's share of quarterly output was 55.6 million tonnes.
Production for the current financial year to end-June 2017 is forecast to increase to between 265 million tonnes and 275 million tonnes, all from the company's Western Australia mines, it said.
BHP also said it will take up to a $175 million charge to underlying profit for the second half of fiscal 2016 related to the reversal of inventory writedowns, job losses and impairments at its coal business, as well as a further $150-$200 million charge relating to global tax matters.
BHP, which has now completed a massive expansion of its iron ore business to feed the Chinese market, said the planned growth would come from deploying unused capacity at its mines as part of a broader strategy to boost volumes across key commodities.
"Over the next 12 months, we expect volumes and costs across our minerals businesses to benefit from our continued drive to safely improve productivity," Chief Executive Andrew Mackenzie said in the company's quarterly production report.
Copper output is expected to rise five percent, metallurgical coal three percent and total iron ore output by up to seven percent. BHP forecast a fall in its petroleum output of up to 17 percent, with output at its onshore U.S. shale oil business to fall nearly 30 percent as it defers development at a time of low prices.
BHP had previously cut its Western Australia iron ore production for the year to June 30, 2016 by 10 million tonnes to 260 million tonnes, blaming a cyclone that ripped through the Pilbara iron ore region in January and railway maintenance.
Production was also hit by by the shutdown of its half-owned Samarco iron ore business following a burst tailings dam in November last year.
In what has been billed the worst environmental disaster in Brazil's history, the dam unleashed a mud flow that killed 19 people, left hundreds homeless and polluted a major river.
In copper, output from the giant Escondida mine climbed to 979,000 tonnes in fiscal 2016, beating guidance in April of 940,000 tonnes. Production of metallurgical coal production and petroleum products were also slightly ahead of guidance.