Shell has retained investment bank Citigroup to market for sale a large package of assets in the Haynesville shale in the US that the Anglo-Dutch supermajor acquired through its takeover of rival BG Group.

The asset package includes 64,000 net acres concentrated in Caddo and DeSoto parishes in Louisiana and Gregg, Harrison, San Augustine and Nacogdoches counties in Texas, according to marketing documents seen by Upstream

The fields are producing 135 million cubic feet per day of natural gas from 777 wells with an average decline of 12.6%