The Korpeje–Kordkuy pipeline is a 200 km long natural gas pipeline from Korpeje field north of Okarem in western Turkmenistan to Kordkuy in Iran. 135 km of pipeline run in Turkmenistan while 65 km run in Iran. In October 1995, National Iranian Oil Company decided to build the pipeline to supply the remote northern part of Iran. The pipeline was built in 1997 and it cost US$190 million. Iran financed 90% of construction costs, which was later paid back by gas deliveries. The capacity of pipeline is 8 e9m3 per year. It has a diameter of 1000 mm. The pipeline was inaugurated on 29 December 1997 by presidents Saparmurat Niyazov and Mohammad Khatami.