The new contracts will be unveiled in Tehran some time from October on, Oil Ministry website Shana said, quoting Deputy Oil Minister Rokneddin Javadi.

"Then more details will be revealed at a conference in London,” Shana quoted Javadi as saying.

The major Opec nation recently reached a deal with international powers to curb its nuclear programme – which it has always maintained is solely for civilian purposes – in exchange for a relaxation of sanctions.

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