Durant, who scored at least 28 points in six of the seven wins, hit 11-of-23 shots and put in a yeoman stint of nearly 38 minutes on the floor for the Thunder.
Russell Westbrook and Serge Ibaka notched double-doubles for the Thunder. Westbrook nearly had a triple-double with 21 points, 13 rebounds and eight assists.
The Nuggets kept pace with the Thunder the entire game and cut the Oklahoma City lead to 77-83 with 7:16 to play in the game. But the Thunder rattled off the next six points to increase their buffer to 89-77 with 6:09 remaining.