Oil pump jacks are seen at the Vaca Muerta shale oil and gas deposit in the Patagonian province of Neuquen, Argentina, January 21, 2019.
Oil pump jacks are seen at the Vaca Muerta shale oil and gas deposit in the Patagonian province of Neuquen, Argentina, January 21, 2019. Reuters / Agustin Marcarian

Oil prices rose in European trading on Friday as attention turned to next week's OPEC+ meeting and expectations that it will dash U.S. hopes for a supply boost.

Brent crude futures for September settlement, due to expire on Friday, gained $3.06 to trade at $110.20 a barrel by 1325 GMT after touching their highest since July 5. The more active October contract was up $3.44 at $105.27.

U.S. West Texas Intermediate (WTI) crude futures rose $3.54 to $99.96 a barrel.

Both contracts are set for a second monthly loss, however, down 4.1% and 5.7% respectively.

A weaker dollar and stronger equities also lent support on Friday. A fall in the dollar makes oil cheaper for buyers with other currencies.

Global equities, which often move in tandem with oil prices, were up on the hope that U.S. monetary tightening would not be as hawkish as initially expected after disappointing growth figures. [MKTS/GLOB]

A Reuters survey forecast Brent and U.S. crude would average $105.75 and $101.28 a barrel respectively this year. [OILPOLL]

Front-month Brent futures are selling at a rising premium to later-loading months in a market structure known as backwardation, indicating tight current supply.

"The oil market in Europe is considerably tighter than in the U.S., which is also reflected in the sharply falling Brent forward curve," said Commerzbank analyst Carsten Fritsch.

A key driver will be the next meeting of the Organization of the Petroleum Exporting Countries (OPEC) and allies led by Russia, together known as OPEC+, on Aug. 3.

OPEC+ sources said the group will consider keeping oil output unchanged for September, with two OPEC+ sources saying a modest increase would be discussed.

A decision not to raise output would disappoint the United States after U.S. President Joe Biden visited Saudi Arabia this month hoping to strike a deal to open the taps.

Analysts, however, said it would be difficult for OPEC+ to boost supply, given that many producers are already struggling to meet production quotas.