Has this happened to anyone else? Twice now, I have gained control of a large portion of my landmass only to find that Scientific Method reveals no oil in sight. It's either on the edges within an empire I've already vassalized or on an adjacent landmass occupied by a hostile civ. I'm currently playing as Napoleon and engaged in a prolonged war with Joao on a nearby continent so I can control the only oil within easy reach. I have a good tech lead and plenty of military to win, but it has set me back more than a few turns.