Iranian OIEC will realize 20th and 21st phases and Petropars will realize 27th and 28th phases of South Pars gas fields, Iran's National Oil Company's director Seyfulla Jashnsaz said.
Jashnsaz said an agreement on development of 19th phase of South Pars will be signed soon.
"Talks are underway with Turkey to develop 22nd, 23rd and 24th phases," Jashnsaz said.