LONDON/SINGAPORE—Oil prices gained for a fourth straight session on Wednesday with tight supply worries offsetting concerns about a weaker global economy.
Brent crude futures for August were little changed at $117.9 a barrel by 0917 GMT. The August contract will expire on Thursday and the more-active September contract was at $114.06, up 23 cents, or 0.2 percent.
U.S. West Texas Intermediate (WTI) crude futures were up 44 cents, or 0.4 percent, to $112.20 a barrel.
Both contracts rose more than 2 percent on Tuesday as concerns over tight supplies due to Western sanctions on Russia outweighed fears of that demand may slow in a potential future recession….