Jan 22 (Reuters) - BHP Billiton Ltd
* Operational review for the half year ended 31 December 2013
* Q2 total petroleum products production 57.7 million boe versus 59.9 million BOE a year ago
* Says full year production guidance maintained for our petroleum, copper, iron ore and coal businesses
* Q2 copper production 439.9 thousand tonnes versus 295.2 thousand tonnes a year ago
* BHP billiton's share of capital and exploration expenditure for the 2014 financial year is expected to be US$16.1 billioni, as planned
* Q2 iron ore production 48.9 million tonnes versus 42.2 million tonnes a year ago
* Q2 metallurgical coal production 11.5 million tonnes versus 8.89 million tonnes a year ago
* We expect to carry strong momentum into the second half of the financial year"
* Says escondida remains on track to produce approximately 1.1 million tonnes of copper in the 2014 financial year
* Source text for Eikon
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