(Photo: Courtesy of Eni official Facebook page)
The discovery, announced on Sunday, covers about 100 square kilometres.
The find could help meet energy-starved Egypt's gas needs for decades to come and could compete with gas projects in Israel and Cyprus.
Globally, however, Egypt is outside the top 10 countries in total gas reserves, with Russia, Iran and Qatar holding by far the largest.
Below are the top three biggest gas fields in the world, followed by the biggest in the Mediterranean:
TOP THREE BIGGEST IN WORLD
FIELD NAME SIZE LOCATION DISCOVERED STATUS
South Pars/ 1,800 tcf Iran/Qatar 1971 producing since 1989
North Field
Urengoy 275 tcf Russia 1966 producing since 1978
Yamburg 200 tcf Russia 1969 producing since 1986
MEDITERRANEAN:
FIELD NAME SIZE LOCATION DISCOVERED STATUS
Hassi R'Mel 85 tcf Algeria 1956 producing since 1961
Zohr 30 tcf off Egypt 2015 undeveloped
Leviathan 17 tcf off Israel 2010 undeveloped
Tahaddi 9-10 tcf off Libya 1999 producing since 2006
Tamar 7.9 tcf off Israel 2009 producing since 2013
Salamat 5 tcf off Egypt 2013 undeveloped
Atoll-1 5 tcf off Egypt 2015 undeveloped
Aphrodite 4.5 tcf off Cyprus 2011 undeveloped
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