LAGOS — Shell has agreed to sell Shell Nigeria Gas Group to Vaaris Energy Ltd, subject to regulatory approval. Shell Nigeria Gas was set up in 1998 and operates about 170 kilometres of pipelines in Ogun, Abia and Rivers states, supplying more than 130 industrial and commercial customers. Shell's Country Chair in Nigeria, Elohor Aiboni, said the company will focus on deepwater oil production and integrated gas, including its stake in Nigeria LNG.