July 22 (Reuters) - Santos Ltd STO.AX :
* Second quarter activities report STO.AX
* Record first half production of 31.1 mmboe, up 10% on the prior half-year.
* Second quarter production of 15.5 mmboe, up 8% on the corresponding quarter
* Average realised oil price decreased 29% to US$43 per barrel for the first half.
* 2016 production and sales volume guidance is maintained
* Says glng produced 1 million tonnes of lng in the second quarter and shipped 16 cargoes.
* HY upstream production costs of us$8.80/boe, 15% lower than the prior half-year.
* Source text for Eikon ID:nASX5BWB1t
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