Updated: Oil rises from one-year low even as concerns of glut persist

The silhouettes of pumpjacks are seen above oil wells in the Bakken Formation near Dickinson, North Dakota, U.S., on Wednesday, March 7, 2018.
The silhouettes of pumpjacks are seen above oil wells in the Bakken Formation near Dickinson, North Dakota, U.S., on Wednesday, March 7, 2018.

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