The North Africa Journal: Tunisia Continues Investing in Oil Exploration and Production Tunisia Continues Investing in Oil Exploration and Production ================================================================================ The North Africa Journal on 25 December, 2008 03:12:00 Gas in the so-called Chergui field, which is located near Sfax, was actually discovered in the 1970s. It is expected to yield 1.4 billion cubic meters. The Chergui field became operational in August 2008, producing a daily average of 450,000 cubic meters of gas. Continue here.