%0 Journal Article %T Reservoir gas isotope fingerprinting and mechanism for increased H2S: An example from Middle East Shanul gas field %A Karimian Torghabeh, Amir %A عظیم کلانتری اصل %A محمد رضا کمالی %A محمد قاسم اکبری فرد %J Journal of Petroleum Science and Engineering %@ 0920-4105 %D 2021