There are other options to Russian oil but they will be difficult or insufficient logistically to replace it if the U.S. and its allied countries ban Russian energy imports. Analysts stated Tuesday.

Vandana Hari founder and CEO of Vanda Insights energy intelligence company, said, “There is just no way that even OPEC+ or combined Iran and Venezuela could make it up.”

Russia’s aggression in Ukraine is not slowing down. U.S. and its allies weigh banning Russian oil and natural gas imports. Oil prices spiked to highs not seen since 2008However, these gains were eventually reduced. It was also possible that Russia might retaliate and cut natural gas supplies to Europe.

Hari indicated that some Russian capabilities could be replaced.

Russia exports about 5 million barrels of crude oil per dayThe International Energy Agency estimates that this number is around 2 million. Hari stated that about 2,000,000 could be replaced if OPEC member Saudi Arabia, Iraq and Kuwait were able “to simultaneously stretch themselves at their maximum capacity”.

Hari said, however, a lot of the spare capacity within OPEC and its allies, known as OPEC+,  is also Russian.

The problem is that OPEC+ must “reopen” its production quota systems. It “just doesn’t seem to be inclined to do any of this yet,” she stated. Any cuts or increases to the output of OPEC+ countries are measured against a baseline — the higher that number, the more oil a country is allowed to pump.

Regina Mayor (KPMG’s U.S. National Sector Leader in Energy and Natural Resources) also stated that OPEC+ had been “incredibly disciplined” about returning crude oil to market.

There are many other sources for oil supply. She said Tuesday that it was just questionable how fast they could come online and the logistics involved in getting them there.

According to reports, other countries were also involved in negotiations with Venezuela regarding lifting oil sanctions. Venezuela is a major source of alternative energy to Russia.

But even if those sanctions were lifted, Hari said that would only free up another 100,000 barrels a day from Venezuela — “certainly nothing that would come even close to offsetting the disruption in Russian supplies.”

Russia the world’s third-largest oil producerAfter the U.S.A and Saudi Arabia. It is also known as the biggest exporter of crude oil to global marketsapproximately 43%, is the largest supplier of natural gas in the European Union.

CNBC interviewed Europe’s top energy official last week the EU has a contingency planIn the event that Russia cut off its gas supply to the bloc. The EU repeatedly spoke of the necessity to diversify its suppliers. However, that idea has yet to materialize. The European Commission is the executive arm and has stated that it would like to end Russia’s dependency amid the conflict in Ukraine.

— CNBC’s Silvia Amaro contributed to this report.