TOKYO (Reuters) - Oil prices rose on Tuesday on escalating concerns over potential supply shortages, with Brent crude leading the way as hundreds of oil workers in Norway were set to strike later in the day.
Brent crude LCOc1 had added 32 cents, or 0.4 percent, to $78.39 per barrel by around 0303 GMT, following a 1.2-percent climb on Monday.
U.S. light crude futures were up 17 cents, or 0.2 percent, at $74.02. They gained 5 cents to settle at $73.85 a barrel the session before.
Hundreds of workers on Norwegian oil and gas offshore rigs are due to strike on Tuesday after rejecting a proposed wage deal, a move which will likely affect the production of at least one field, Shell’s Knarr.
That potentially adds to disruptions in other oil producers amid tensions in the Middle East.
The United States says it wants to reduce oil exports from Iran, the world’s fifth-biggest producer, to zero by November, which would oblige other big producers to pump more.
Saudi Arabia, fellow members of the Organization of the Petroleum Exporting Countries (OPEC) and allies including Russia agreed last month to increase output to dampen price gains and offset global production losses in countries including Libya.
The market has grown concerned that if the Saudis offset the losses from Iran, that will use up global spare capacity and leave markets more vulnerable to further or unexpected production declines.
“The bottom line becomes the available spare capacity within OPEC ... and the markets have started to focus on that,” said Victor Shum, vice-president for energy at IHS markets in Singapore.
“It is likely that concern
