That's the claim made in this report:
"63% of Yemen's crude production is being stolen by Saudi Arabia in cooperation with Mansour Hadi, the fugitive Yemeni president, and his mercenaries," Mohammad Abdolrahman Sharafeddin told FNA on Tuesday.
"Saudi Arabia has set up an oil base in collaboration with the French Total company in the Southern parts of Kharkhir region near the Saudi border province of Najran and is exploiting oil from the wells in the region," he added.
Sharafeddin said that Riyadh is purchasing arms and weapons with the petro dollars stolen from the Yemeni people and supplies them to its mercenaries to kill the Yemenis.
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If you recall, Saddam Hussein claimed Kuwaitis were stealing Iraqi oil with the assistance of the US. That appears to be one of his motivations for invading Kuwait in 1990.
I find it difficult to express anything but shame and disgust for the behavior of the US and France in these and other matters in the Middle East and North Africa. Our two former "democracies" now are little more than rapacious military juntas.