Can you slant drill in the ocean?
Well, I have read that the Chinese are doing it in the Florida Straits 50 miles from the keys in order to reach the oil on our side of the line between Cuba and our coast that was agreed upon before Castro's takeover. So I suppose the answer to your question is yes.
Of course American companies are forbidden to drill in that area, so I guess we may as well let the Chinese have it if it can't benefit us, thanks to a Reid-Pelosi run Congress.