What you are talking about is drops in the ocean, 15000 barrels, 89000 barrels won't even cover the maintenance costs of delivery.
I really don't think you have grasped the roll of the price cap on Russian oil, it is specifically designed to keep Russian oil in the market at a price they can't make a profit from and it is working very well given the 20% drop in fuel prices here and all the while the western world gradually transitions away from fossil fuels.
If they do not cover the maintenance costs of delivery, why is Russia exporting them and why are US and Ukraine buying them ?
According to the IEA (and we may assume that these figures are too low ,giving the people who control the IEA ) ,the AVERAGE amount of Russian exports of oil and petroleum products per day was
7,5 million bpd in 2021
and 7,7 million bpd in 2022 .
This means that the result of the invasion was that the exports INCREASED by 200000 barrels every day .
The figures for February 2023 are 7,5 million bpd but there is no proof that this decrease was caused by the war .
The revenues from these exports were
14,9 billion UDS per month in 2021
and 18,7 billion USD per month in 2022
Estimations from the IEA
For February the monthly revenues were 11,6 billion USD ,but this figure can not be used as a proof,as there are no figures for February 2021 and February 2022 .
The only thing we know is that the result of the invasion was that Russia gained every month 3,8 billion USD compared to 2021 .
The West claimed that it had limited the price of Russian seaborne oil to $ 60 dollar per barrel , but that is an unproved claim, because it is not the West that determines the price of the crude oil . This price is determined not by those that produce oil,but by those that export oil .
The fact that in 2022 Russia exported more oil (73 million barrels )and gained more money ( $ 45,6 billion ) than in 2021 indicates that the Western sanctions are failing .
Source is :Reuters from March 15 2023 =
Factbox :the battle over Russia's crude and oil products .
The oil sanctions against Italy in 1935-1936 failed .
The food sanctions against the Soviets after their intervention in Afghanistan,failed . And there were no gas or fuel sanctions .
The sanctions against Iran,Iraq, Syria,Cuba failed .
Why should the sanctions against Russia fail ?
If Ukraine and US give the example by buying Russian oil, why should anyone refuse to buy Russian oil ?
Australia prohibits the transport of Russian oil,petroleum products and gas ..unless ...unless and than we see emerge the exceptions ,one of them being that the prohibition does not apply if the prices are below the maximum of $ 60 per ton ,but as no one can prove what the real price is ,the result is that the sanctions are worthless .
People will continue to buy Russian oil,as long as this oil is cheaper than oil from other countries .And KSA is indirectly increasing the price of its oil,which means that Russia also can increase the price of its oil .
In 2020 KSA was the number 1 of oil exporting countries, Russia the number 2, US only the number 3 .
Thus it are the numbers 1 and 2 who fix the oil price, not the number 3 .