Natural Gas of Sylhet

There are eight gas fields located in Sylhet  region. Also the first 3 gas fields of the country were discovered in this region between mid 1950s and early 60s – Sylhet gas field in 1955, Chatak in 1959 and Rashidpur in 1960. These predate the discovery of Titas gas field which is at present the largest natural gas supplier of the country. Other gas fields of the region according to their year of discovery are Koilastila 1962, Hobigonj 1963, Beanibazar 1981, Fenchugonj 1988 and Jalalabad 1989. All these reserves have been discovered in structural traps formed by mild folds (anticlines) that occur in the subsurface and have no direct surface expressions. The intensity of these folds increase west to east in the direction of the Folded Belt region; which relates to the development of grater thrust in that direction due to tectonic activity. However, the discovery gas fields are mostly located in the nearly-plan lands of along the western fringe zones of the intensively folded areas. Gas is discovered within sandstone layers of Bhuban and Bokabil formations in the subsurface, which is about 35 million years old. Sandstone act as good reservoirs because of their high porosity; however, the gas is generated in some neighboring clayey layers with high organic contents and lager migrates to the sandy units, which are sealed by impervious sedimentary layers. Impervious layers prevent further migration of the gas.  Total reserve of the gas fields of the Sylhet region is about 14 trillion cubic feet with a recoverable reserve of about 8.5 tcf. Please Visit Our Site for More Information