With effect from 14 January, CNOOC has been added to the Entity List by the US Commerce Department as it is “reasonably believed to be involved, or poses a significant risk of becoming involved in activities contrary to the national security or foreign policy interests of the US”. CNOOC is to be subject to licence requirements (with a presumption of refusal) for the export, re-export or transfer of all items subject to the Export Administration Regulations, with the exception of (amongst other things) crude oil, refined petroleum products, certain natural gas products, or items required for joint ventures with persons from certain countries which are not operating in the South China Sea.
https://public-inspection.federalregister.gov/2021-00995.pdf
Protecting and Preserving a Free and Open South China Sea
If you would like to make a (polite) gesture and make a (very) modest contribution to my ongoing with my relocation, removal and computer costs, I have a page at https://www.buymeacoffee.com/KoIvM842y