Yeah, the lights on all those drilling sites make Bakken and Eagle Ford fields visible from space.
Check out two cool photos at New NASA satellite photos show America’s oil fields at night, over at Carpe Diem.
Cool pix. You can pick out the interstate highways by tracing the visible towns that are in a line.
Another view of Eagle Ford is at Eagle Ford Shale. It’s not larger than either Houston or Dallas-Forth Worth. The field is narrower but much more extended than either of those metro areas. Check out Have You Seen the Eagle Ford From Space?