* Brent up 1.5 pct this week near $116 on Middle East unrest
* TECHNICALS: Brent is temporarily neutral
* Coming Up: U.S. GDP for fourth quarter; 1230 GMT (Adds context on European financial rescue fund, Portugal)
By Alejandro Barbajosa
SINGAPORE, March 25 (Reuters) - Brent crude was steady near $116 on Friday ahead of protests planned in Bahrain, heading for a third straight weekly gain and up 1.5 percent since western powers last weekend launched a military campaign in Libya as turmoil flared in Yemen and Syria.
Brent crude for May shed 8 cents to $115.64 a barrel at 0600 GMT, about $4 from a 2-1/2-year high near $120 a month ago, while U.S. crude slipped 19 cents to $105.41.
After the first rounds of a U.N.-backed offensive to disable Libya's air defences and prevent Muammar Gaddafi's forces from launching attacks on civilians, NATO said it would enforce a no-fly zone over the country but stopped short of taking full command.
Libyan oil exports of about 1.3 million barrels per day (bpd) have virtually vanished, eroding spare capacity as Saudi Arabia and other OPEC members increased production, raising concern the group may struggle to compensate for bigger disruptions.
"So long as ongoing problems in the Middle East continue to elevate risks of a further supply disruption, there is a strong likelihood of a price spike in the second quarter as the market demands additional oil to meet summer demand," said JP Morgan analysts headed by Lawrence Eagles.
The bank on Friday raised its forecast for Brent in the second quarter to $118 from $105, saying "dips in volatility, like the one that we saw this week, appear to offer good entry points for hedging strategies."
Barclays Capital also raised its projection for 2011 Brent to $112 from $91.
Concerns about Portugal's sovereign credit rating have slowed oil price gains this week, after the country's prime minister resigned on Wednesday, falling victim to the European Union's rolling sovereign debt crisis and prompting Standard & Poor's to downgrade the credit ratings for the south European nation.
European leaders agreed on Thursday to increase their financial rescue fund to the full 440 billion euros by June.
Trading volumes oil futures markets have been thin this week as investors await the next turn of events in the Middle East and weigh developments around Japan's nuclear crisis.
Allied warplanes hit military targets deep inside Libya on Thursday but failed to prevent tanks re-entering the western town of Misrata, underlining the difficulty of the mission to protect Libyans from government forces.
Turkey had wanted to be able to use its NATO veto to limit military operations against Libyan infrastructure and avoid casualties among Muslim civilians from air raids. France believes having NATO in full charge would erode Arab support because of U.S. unpopularity in the Arab world.
In Yemen, soldiers loyal to President Ali Abdullah Saleh clashed with army units backing opposition groups demanding he step down, while in Syria, at least 37 people were killed in the city of Deraa, as protests grew.
In Bahrain, a small island country that lies less than 100 kilometres from the hub of the Saudi Arabian oil industry, opposition activists said they planned to hold a day of demonstrations on Friday in defiance of a ban on all public gatherings.
Oil prices will stay above $100 a barrel through 2013, a Reuters poll showed on Thursday, as analysts sharply revised their forecasts on expectations of a protracted outage in Libya and uncertainty about the Middle East and North Africa, which combined produce more than a third of the world's oil.