Jan 22 (Reuters) - Santos Ltd STO.AX :
* 2015 fourth quarter activities report STO.AX
* Qtrly production 14.9 mmboe versus 15.1 mmboe a year ago
* Qtrly sales 17.2 mmboe versus 18.0 mmboe a year ago
* Qtrly sales revenue $828 million versus $1.09 billion a year ago
* Expects to book reductions to both asset carrying values and reserves as part of finalising its 2015 full-year financial accounts"
* Company is also considering its 2016 operational and development plans and forecasts,
* "Guidance on production cost per barrel is unchanged"
* Depreciation, depletion and amortisation expense is expected to be around the top end of the original guidance range"
* Source text for Eikon ID:nASX6PpxW0