new delhi nov 11 reuters  indian conglomerate vedantas vdanns barmer oil and gas block in western india would be made unviable by a 10 rise in the governments share in the projects revenue a company lawyer told the countrys top court on friday the supreme court was hearing a dispute between vedanta and the federal government related to an extension of the productionsharing contract for the barmer asset in the state of rajasthan the levy of additional 10 makes the project unviable senior advocate arvind datar appearing for vedanta told the court the government has said it is entitled to increase its revenue share from the block by 10 having recently extended the contract for the barmer asset by 10 years reporting by arpan chaturvedi in new delhi additional reporting by nidhi verma writing by shivam patel editing by david goodman