The Akkas gas field once symbolized Iraq’s ambition to become a major natural gas producer, and its promise to bring economic development to Anbar province. Now, it is an unofficial refugee camp.At least 500 internally displaced people have moved into the facilities that were originally built for the South Korean company Kogas and its subcontractors, according to a resident of the nearby Karabilah village, an engineer at the Akkas power plant and a Kogas official.After the rise of the s…