Yemen's main oil pipeline has started pumping crude oil again after it was repaired following an attack by tribesmen late last week, oil officials said.

Tribesmen blew up the pipeline on Thursday, in the latest of a series of attacks on the government's main source of foreign currency earnings.

Officials said oil started flowing again in the early hours of Monday to the export terminal on the Red Sea.

"A team of engineers were able to repair the damage caused to the pipeline," the interior ministry said on its website.

The Arabian Peninsula state, which relies on crude exports to finance 70 per cent of public spending, has seen frequent bombings of its main pipeline in central Maarib province since an uprising in 2011.

A third of Yemen's 25 million people live on less than $2 a day and unemployment is estimated at around 35 per cent - with youth joblessness at 60 per cent. - Reuters