Poroshenko said he had discussed the issue during his visit to Iran, RedNova reported.
Talks with Iran were being held when Viktor Yushchenko was prime minister in 2000, he said.
Several possible routes through Armenia, Georgia, Russia, and also Turkey and the Black Sea have been considered, he said.
The experts have six weeks to calculate the costs and profit margins of the routes and determine which is best, he added.
Deputy energy ministers from the countries interested in the pipeline are to meet in Iran on July 24-25, Poroshenko said. Specific deadlines and the list of countries taking part will be determined at the meeting.
The project could cost over $10 billion and see over one thousand kilometers of pipeline in Iranian territory alone, he said.
"Iran is ready to take part in financing the laying of the gas pipeline in its territory and guarantee determined volumes of gas supplies and fix prices for the recoupment period," he said.
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