sentences:  Gachsaran and Dogonbadan as names of a city are in fact referring to the same place, as the city has two names.Gachsaran is an oil- and gas-producing area that has just started to expand and profits from its industrial capacity.Gachsaran has the largest gas reserves in Iran also has the largest recoverable oil field in Iran and third in the world and has good various medicinal plants, citrus and olive.