RE:NOTHINGOYL resources are unproven. The two discoveries they have made are so far not commercial as per their own press release back in December. They estimate 600 mmbl, but this will require more drilling to prove.
The licence for the Corentyne has expired. The day before it expired they did submit a Notice of Commercial Interest which has not yet been officially accepted or rejected. At least the decision has not yet been made public if it has been made. If it is rejected, and from the rhetoric of the VP of Guyana Jagdeo it will be, then the value is about 0. They will still have the unfinished port, but be millions of dollars in debt with no exploration oil licenses. If it does retaiin a few pennies in value, this will be a port company (which I honestly would have no idea how to value), not an oil exploration company.