SOCIETE GENERALE:

* SAYS "WE NOW FORECAST BRENT (CRUDE) AT $82 IN 4Q18 (VERSUS. $78 PREVIOUSLY) AND $77 IN 1Q19 (VERSUS. $73 PREVIOUSLY)"

* SAYS BRENT CRUDE IS FORECAST TO AVERAGE $75.25 FOR 2019 AS A WHOLE (VERSUS. $72.75 PREVIOUSLY)

* SAYS CRUDE PRICE FORECASTS REVISED HIGHER, DUE TO BIGGER SANCTIONS LOSSES FROM IRAN

* SAYS INCREASED ESTIMATE OF IRANIAN CRUDE PRODUCTION AND EXPORT LOSSES DUE TO SANCTIONS FROM 1.3 MB/D TO 1.7 MB/D

* SAYS MOST OF IRANIAN SUPPLY LOSSES WILL BE OFFSET BY HIGHER PRODUCTION FROM SAUDI ARABIA, OTHERS

* SAYS "HOWEVER, ALREADY TIGHT SPARE CAPACITY WILL GET EVEN TIGHTER, AND THERE ARE HIGH LEVELS OF RISK AND UNCERTAINTY IN THE OIL MARKETS"

* SAYS UPWARD REVISION DUE TO TIGHT SPARE CAPACITY AND PROJECTED STOCKDRAWS IN 4Q19, HIGH LEVELS OF RISK, AND GLOBAL OIL SUPPLY ADEQUACY UNCERTAINTY

(Reporting by Vijaykumar Vedala in Bengaluru) ((Reuters.Briefs@thomsonreuters.com))