Qatar Petroleum said on March 13 it had renewed a concession agreement with the United Arab Emirates (UAE) on the development and operation of their joint Al-Bunduq offshore oil field, despite a diplomatic crisis between the Gulf states.

The agreement was signed with Abu Dhabi’s Supreme Petroleum Council, Abu Dhabi National Oil Co. (ADNOC), Japan’s United Petroleum Development Co., and Bunduq Co. Ltd., Qatar said in a statement on its website.

“The signing of the new agreement comes as the original concession agreement expired on March 8, 2018. It will govern the continued development and operation of the shared field,” Qatar said.

The UAE, Saudi Arabia, Bahrain and Egypt cut diplomatic and some commercial ties with Qatar in June, accusing Doha of supporting terrorism. Qatar denies the accusation.

A spokesman for Abu Dhabi’s Supreme Petroleum Council said the Al-Bunduq Field, shared between the emirate of Abu Dhabi and Qatar, “has been operated via a concession with a Japanese consortium for over four decades.”

“This concession was recently extended by each respective government to the Japanese consortium with no direct communication or engagement between the two states,” the spokesman said.

“There is no commercial or trading relationship being established between the UAE and Qatar by the extension of this concession,” he added.

Qatar supplies the UAE with natural gas through the Dolphin pipeline which pumps around 2 billion cubic feet of gas per day. Doha said last year it had no plans to halt gas supplies despite the regional rift.

Bunduq Co. Ltd., which operates and manages Al-Bunduq Field, was established in 1970 and is fully owned by United Petroleum Development Co. Ltd., a Japanese company owned by Cosmo, JX Nippon, and Mitsui.

The Al-Bunduq offshore oil field started production in 1975. Its oil production is exported to Japan and other Asian markets.