New Delhi: Reliance Industries (RIL) may this month win approval for $1.45-billion investment for developing a natural gas find it has made in a Cauvery basin block off the Tamil Nadu coast several years ago.

RIL had made the only discovery in the CY-DWN-2001/2 block in 2007 and had submitted a Declaration of Commerciality (DoC) for the find, which was named D-35, in March 2010 after it carried out drilling of an appraisal well. But the DoC, a pre-requisite for developing any discovery, was never approved by the Directorate General of Hydrocarbons (DGH) which said the find was not viable at $4.2 per million British thermal unit (mBtu) gas price.