The threat by the Petroleum and Natural Gas Senior Staff Association of Nigeria (PENGASSAN) to launch a nationwide strike from Dec. 18 helped support a rally in Brent futures.

ANGOLA

Angola's Sonangol is offering Dalia at dated Brent minus 30 cents and Pazflor at dated minus 20 cents, unchanged from Thursday.

About 10 cargoes of January-loading crude are still available among all sellers, traders said.

NIGERIA

About 30 cargoes were left from the January programme, amounting to ample supply.

Qua Iboe for January loading was last heard to be offered on Wednesday at dated Brent plus $1.70.