A joint committee of ministers from OPEC and non-OPEC oil producers has agreed to review whether a global pact to limit supplies should be extended by six months, it said in a statement on Sunday.

The Organization of the Petroleum Exporting Countries and rival oil-producing nations were meeting in Kuwait to review progress with their global pact to cut supplies, according to Reuters.

OPEC and 11 other leading producers including Russia agreed in December to cut their combined output by almost 1.8 million barrels per day (bpd) in the first half of the year. The original deal was to last six months, with the possibility of a six-month extension.

The oil ministerial committee “expressed its satisfaction with the progress made towards full conformity with the voluntary production adjustments and encouraged all participating countries to press on towards 100 percent conformity,” the statement said.

The December accord, aimed at supporting the oil market, has lifted crude LCOc1 to more than $50 a barrel. But the price gain has encouraged U.S. shale oil producers, which are not part of the pact, to boost output.

The committee said it took note that certain factors, such as low seasonal demand, refinery maintenance and rising non-OPEC supply had led to an increase in crude oil stocks. It also observed the liquidation of positions by financial players.

Russian Energy Minister Alexander Novak said it was too early to say whether there would be an extension, although the agreement was working well and all countries were committed to 100 percent compliance.

Before the meeting, Iraqi Oil Minister Jabar Ali al-Luaibi told reporters there were some encouraging elements that suggested the oil market was improving, and that if all OPEC members agreed measures to help price stability, Iraq would support such steps.

“Any decisions taken unanimously by members of OPEC … Iraq will be part of the decision and will not be deviating from this,” Luaibi said.

Iraq’s oil production is running at 4.312 million bpd this month, Luaibi said, adding that his country had cut its oil exports by 187,000 bpd so far and would reach 210,000 bpd in a few days. Compliance with the supply-cut deal was 94 percent in February among OPEC and non-OPEC oil producers combined, Russia’s Novak said.

Russia is committed to cuts of 300,000 bpd by the end of April, Novak said. Novak said he expects global oil stockpiles to decrease in the second quarter of this year. “The dynamics are positive here, I believe,” Novak said, adding that inventories in the United States and other industrialized countries had risen by less than in the past.