New Delhi: Government-dictated price for natural gas produced by companies such as ONGC is likely to inch up marginally to USD 1.82 next week while the same for difficult fields like one operated by Reliance-BP may fall below USD 4, sources said. The price of gas, which is used to generate electricity, make fertiliser and convert into CNG for automobiles and cooking gas for households, is due to bi-annual revision next week.