3 part answer
a) I'm not a US oil expert (ask me about North Sea, go on, please?) so I dont know if when I find an exploration example if its outside of a current field
b) Bejeesus it's tough to find this stuff when you dont know exactly what you're looking for :-)
and
c) Define "outside". You mean adjacent to current fields (usually a reasonable place to find oil), 10 miles, 50 miles, 100 miles away?
Do you mean drilling in the Carolinas, Maine or Washington?
Or do you only mean areas that you already know have been declared verboten due to local opposition.
Alaska? ANWR no, but the link I gave said we just opened up 3 million hectares. That count?