MTECHTIPS-Crude oil trading range for the day is 3645-3743. Crude oil prices extended gains less than a week before major global oil producers begin to scale back production in line with the deal they struck last month. The 4.2 million barrel build in U.S. crude oil stocks shown in the API data came as a surprise. OPEC members agreed to reduce output by a combined 1.2 million barrels per day starting from January 1. SELL CRUDE OIL JAN @ 3720 SL 3750 TGT 3680-3640. MCX.