The joke of it is that the oil gurgles up through the ocean floor anyway and has for ten thousand years. Its coming up whether you drill for it or not, so you may as well drill.
There is a map here of the area of oilseeps in California
http://geomaps.wr.usgs.gov/seeps/where.html
At the north end of the area was the site of the first oilwell in Calif in Petrolia.