* Opec meeting in Vienna does not agree output targets
* Saudi restraint seen as market supportive
* High output offset by supply disruptions in Nigeria, elsewhere
* Strong demand for diesel, jet fuel and gasoline

Brent crude prices held around $50 a barrel on Friday on signs the market was moving back to more balanced supply and demand, and on an Opec meeting viewed as supportive.
"The worst was over," Qatar's Energy Minister HE Dr Mohamed bin Saleh al-Sada told reporters in Moscow. "The market is heading towards rebalancing."
The positive tone of the Organisation of the Petroleum Exporting Countries (Opec) meeting in Vienna on Thursday assuaged concerns over an intensified battle for market share between rivals Saudi Arabia and Iran.
"The meeting removed a substantial concern and downside risk from the market as Saudi Arabia made it very clear that they have no intention of swamping the market with oil as a means of hurting Iran economically through a lower oil price," said Bjarne Schieldrop, chief commodities analyst with SEB Bank in Oslo.
Supply disruptions elsewhere - particularly in Nigeria, Venezuela, Libya and the United States - were also hastening a return to balance.
On Friday, militants in the restive Niger Delta region that accounts for more than half of Nigeria's oil production claimed three new attacks on oil infrastructure.
Brent crude futures were trading at $50.09 per barrel at 0945 GMT, up 5 cents from the last settlement and almost double January lows and on track for its fourth weekly gain.
US West Texas Intermediate (WTI) crude futures were up 3 cents at $49.20.
"We find it difficult to be bearish the crude oil time-structure as long as the Delta Avengers are maintaining their current momentum of supply destruction; this will also support the flat price of crude oil," said Olivier Jakob, managing director of PetroMatrix.
Bank of America Merrill Lynch also said that "seasonal dynamics, as well as robust trend gasoline consumption growth in the US, India, and even China" was supportive.
Fuelled by lower oil prices, consumers are driving and flying more, boosting consumption of gasoline and jet fuel.
Data from the US Energy Information Administration on Thursday showed larger-than-expected drops in stocks of gasoline and distillates, pointing to strong consumption and exports.