Oil edges up, as investors worry about global demand | Reuters

Oil edges up, as investors worry about global demand | Reuters

Oil prices rose modestly in a see-saw session on Tuesday, as concerns about the global consumption outlook counterbalanced the struggle by big OPEC producers to pump enough supply to meet growing demand.

Both benchmarks were at one point up by $1 per barrel, but Brent crude pared gains and settled just up 44 cents at $74.36 a barrel, after falling by almost 2% on Monday.

The October West Texas Intermediate (WTI) contract , which expired on Tuesday, rose 27 cents to settle at $70.56 a barrel, after dropping 2.3% in the previous session. The more active November contract rose 35 cents a barrel to $70.49.

Brent and the November WTI contract earlier reached session highs of $75.18 a barrel and $71.48 per barrel, respectively.

"It seems to be a very nervous trade today," said Phil Flynn, senior analyst at Price Futures group in Chicago. "It's a little bit of ongoing concerns about the potential impact of demand going forward."