July 15 (Reuters) - BHP Billiton Ltd BHP.AX :
* Onshore US asset review BHP.AX
* Following this impairment, the group's onshore US business will have net operating assets of approximately US$24 billion
* Expects to recognise impairment charge of US$2 billion post-tax against carrying value of onshore US assets as an exceptional item in 2015 FY results
* Plans to invest US$1.5 billion in the onshore US in the 2016 financial year
* At an oil price of US$60 per barrel and gas price of US$3.00 per mscf, group expects onshore US business to be free cash flow positive in 2016 FY
* Sees ultimate potential of hawkville field at over 150 kboe/d, up from previous estimate of 100 kboe/d
* Source text for Eikon ID:nASX4hLKPv
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