Yes you are correct, that's an important thing to look at. Apparently the main energy usage which causes the 1.5kwh number is drilling, I'll see whether I can f

Yes you are correct, that's an important thing to look at. Apparently the main energy usage which causes the 1.5kwh number is drilling, I'll see whether I can find some sources. If it's actually drilling that makes a big difference because drilling might not be done where the oil is raffined