Tennessee, the oil, if discovered as expected, is in water over a mile deep. Drilling for it and determining how much is there is only half the battle. The development projects to bring it to the surface will be multi-billion dollar projects. That takes time and planning.
A lot of people think that just because ERHE is listed on the OTCBB it is taboo. Don't read me as a pumper, there's no hype here, take a few weeks to read about the decade that brought us to this point. There will be plenty of upside should you decide to buy later.
To answer your question as I understand it... as Sinopec/Addax/etc drill, proven oil will be determined. In water this deep, proven oil, not yet developed, is valued at about $7 per barrel. ERHC's market cap will be determined by the success of drilling.
We don't know what the JDZ offers. We *do* know that companies have paid hundreds of millions of dollars and fought for nearly a decade for the right to look. WesternGeco estimated the JDZ holds 14.4 billion barrels of oil. If true, ERHC is positioned well by owning a significant chunk of that, hopefully as much as a billion barrels. This doesn't even touch on their other potentially more significant rights in the area.
My personal target for this stock has been $7-$14 based on results, that target goes back years. Do *not* read me like the daytraders do and assume I'm saying we will be $14 overnight. This is not a flip trade to get the prize, it is an investment. Your research will show that one man alone controls over 50% of the shares. His plans aren't clear, but they appear ambitious. However, he could decide to sell the company on a whim and if you're "out" for a trade, your out for the prize.
This isn't for the faint of heart. Don't commit money to this based on message board hype. Google "JDZ ERHC" and start to learn whether this is something you could be comfortable with.