June 6, 2012. The petroleum regulator has recommended cancellation of licences for five pipelines that GAIL India and Reliance Gas Transportation Infrastructure (RGTIL) were planning to build to transport natural gas from Reliance Industries' D6 block, where output has fallen sharply. The oil ministry has received a communication from the Petroleum and Natural Gas Regulatory Board (PNGRB) saying the licence for one pipeline being planned by GAIL and four by RGTIL should be revoked as work has not progressed on the projects for a long time.