According to the Wall Street Journal, Iran may consider entering into production sharing 
agreements with foreign companies for resources in the Caspian Sea, which is reported to 
have “possible reserves” of 10 billion barrels of crude oil. Such actions, as well as recent 
meetings between the Iranian Oil Minister and European energy companies such as Eni, 
Shell, Vitol and OMV, demonstrate efforts by Iran to re-engage with foreign oil companies 
once sanctions are ultimately lifted. 

An article regarding this issue 

An article regarding recent meetings between European energy companies and the Iranian 
Oil Minister