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Which countries share the North Field and South Pars natural gas reservoir?

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The North Field and South Pars natural gas reservoir is shared by Qatar and Iran.1

This massive geological structure, located in the Arabian-Iranian basin, is recognized as the world's largest nonassociated natural gas field. It is known as the North Field in Qatar and as South Pars in Iran. The reservoir is estimated to contain more than 28 trillion cubic meters (1,000 trillion cubic feet) of reserves, significantly contributing to the global energy standing of both nations.1