Abstract: Shale gas is natural gas that is found trapped within shale formations, which act both as reservoir and cap. In the context of Bangladesh, there are many geological and exploring limitations to the development of shale gas in Bengal basin. The study carried out by taking store of the available information, review of the existing wells and their logs of potential area. The study provide the suggestion of shale plays and their lateral extents, and establish thickness and depth of the shale plays as well as geochemical data of the shale formations in Bengal basin. This initial study on shale gas potentiality in Bangladesh discloses that no effective shale gas plays occur in Bangladesh. Shale intervals in the Tertiary sediments greater than 20 m in thickness may occur in places within Kopili, Jenum and Tura Sandstone Formation, but they reach maturities at depths more than 5000 m, thus being not economic for extraction. In Gondwana basin, shale have reasonable maturity, but comprise only thin sequences. TOC is also a critical factor in these cases.