Lights shine on oil drilling activities, Monday, Dec. 15, 2014, near Williston, N.D.
Lights shine on oil drilling activities, Monday, Dec. 15, 2014, near Williston, N.D. Eric Gay AP
Lights shine on oil drilling activities, Monday, Dec. 15, 2014, near Williston, N.D. Eric Gay AP

Oil inventory decline may raise gas prices

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